The Week in Research Review, etc 9-17-18

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Another week of some great discussions looking at the week in research review. Check it out below and let you friends know they need to subscribe to my blog! Thanks, everyone!

 

 

Gluteal Tendinopathy: A Review of Mechanisms, Assessment and Management. Grimaldi et al Sports Med 2015.

Great review of gluteal tendonopathy, which I think is more prevalent than we once thought.

It was often confused as greater trochanteric bursitis which was completely misleading, and treated with injections.

Non-inflammatory insertional tendonopathy of the gluteus medius and/or gluteus minimus is now considered the primary pathology underpinning lateral hip pain.

This paper does a nice job of outlining the pathomechanics, assessment, and management of patients diagnosed with gluteal tendonopathy.

In their conclusions they mention “The evidence for the best management is poor, and the underlying mechanisms of the condition are only beginning to be understood. Interventions reported in the literature do little to address potential underlying mechanisms.”

Found this pretty eye-opening but refreshing because as much as we think we know, we really don’t know.

Check it out and share with your colleagues and friends that may be interested…thanks!

 

 

 

The squat and deadlift definitely my go to exercises for most of my patients with a lower body injury. @kieferlammi@fitnesspainfree

Obviously, there’s a progression to get to heavy weights but the goal for MOST of my clients is to load their joints and muscles to be able to withstand the demands of their life and to meet their goals.

I also like to make sure their accessory movements and stabilizing structures can maintain good stability, as in the glute tendonopathy I posted yesterday.

My focus is typically on improving hip,. ankle and knee mobility and stability through hip flexor stretching and maximizing ankle dorsiflexion. These principles apply to many but not all (so calm down!).⠀

I’ll also focus on glute/Hamstring work through clams, bridging, band walks, etc. Again, my go-to exercises for the lower half, kinda like my go-to rotator cuff exercises.

Our lives can be repetitive but that’s because many people fall into similar buckets in their presentations.

What do you think❓Do you use these similar principles when treating your clients?

Share or tag a friend who may benefit from this post…thanks!⠀

 

 

 

Arthrogenic muscle inhibition after #ACL reconstruction: a scoping review of the efficacy of interventions Sonnery-Cottet et al BJSM Sept 2018.

This paper looked to ‘determine whether reported therapeutic interventions for arthrogenic muscle inhibition (AMI) in patients with ACL injuries, following ACL reconstruction or in laboratory studies of AMI, are effective in improving quadriceps activation failure when compared with standard therapy in control groups.’

780 potential articles were identified. 20 met the inclusion criteria.

Using the GRADE approach, there was moderate-quality evidence for the efficacy of cryotherapy in the treatment of AMI.

Moderate-quality evidence for the efficacy of exercise in the treatment of AMI.

Surprisingly, there was low-quality evidence for the efficacy of NMES, which seems to be pretty accepted treatment but vibration, ultrasound, and TENS also demonstrated low-quality evidence.

The available evidence does not support taping or bracing in AMI. They mentioned active release or local anesthetics as other modalities that have no effect on quadriceps inhibition.

No mention of blood flow restriction training, which would’ve been interesting. #BFR

What do you think? Does this study match what you do in your clinical practice? Tag a friend or colleague who may be interested in this open access paper…thanks!⠀

 

 

Is There a Pathological Gait Associated With Common Soft Tissue Running Injuries? – Bramah et al AJSM 2018.

I took an interest in this study because they actually used people that had been diagnosed with an injury, which is pretty unusual.

They wanted to look to see if Injured runners would demonstrate differences in running kinematics when compared with injury-free controls. They looked at 72 injured runners and 36 healthy controls.

The injured runners demonstrated greater contralateral pelvic drop (CPD) and forward trunk lean at mid-stance and a more extended knee and dorsiflexed ankle at initial contact.

Contralateral pelvic drop was found to be the most important variable in predicting the classification of participants as healthy or injured.

Importantly, for every 1° increase in pelvic drop, there was an 80% increase in the odds of being classified as injured.

Curious to hear my running PT/Physios chime in and drop some knowledge like @zerenpt and @running.physio
Share with your running friends and colleagues who may benefit from reading this post…thanks!⠀

 

 

 

[REPOST] Thought this was a great post showing some advanced hamstring exercises by @scottlogan_nz(twitter) @scottlogan03 (Instagram). Check it out and give him a follow!

Can be used in rehab after an #ACLsurgeryor any lower body injury. can also be used in injury reduction programs, especially for those struggling with chronic strains.

Loved the addition of explosive power production while trying to dissipate the forces.

See his post below. 👇🏻

Higher speed, fast eccentric and rapid isometric hamstring exercises are an important part of any performance or injury risk reduction program. Here are a few variations I have used recently. There are plenty more out there, this is not an extensive video database. Add one or two of these to your next cycle and let me know how you get on. Remember to be smart adding new exercises and stimulus to training. do it gradually and progressively.⠀

 

 

 

Power of positive words. We use these on a daily basis at @championptp. Like @drewbrees talks about during a recent interview.

Dr. Andrews said “If I did that surgery 100 times, I couldn’t do it as good as I did it this time.” I wanted to plant that positive seed…

Wow, powerful stuff by the doctor who I know completely gets it when he’s dealing with all of his patients…from the youth athlete to the highest paid players ever to play professional sports.

There’s a kinda game we play at times to make sure our clients can buy into what we have done or are about to do with them.

Whenever someone tells me that they couldn’t have done it without me, I always tell them that they did all of the work and I was just there to help guide the process.

Dr. Andrews alluded to this and knew the mental challenges that Drew and his family were going through right after the surgery. He was able to set the tone for the rest of the rehab that @wilk_kevin did over the many months following the surgery.

I was able to watch across the room at @championsportsm (and at times work with Drew when KW would hit the road) and see the tremendous progress that was being made.

I distinctly remember Drew’s 1st day of throwing a football and the relief that day. It was such a great moment to witness and one in my personal career that I’ll never forget.

With that, I just wanted to share this video because the interactions and confidence that we can exude can make or break a rehab session, so choose your words and actions carefully.

Tag a friend who may like to read this or may just be a @saints fan!

 

Lots of good stuff…Thanks for reading!

The Week in Research Review, etc 9-10-18

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Lots of good stuff this past week. We talked:

  • Dr. Andrews knowledge bombs
  • Frozen Shoulder video
  • AC joint Classification
  • Whether we should return our ACL patients at 6 months post-op
  • Eric Cressey quote on failing rehab


What I have learned about being successful as an orthopedic surgeon by Dr James Andrews

Great read by my friend, mentor and colleague who I was fortunate to work with from 2002-2014, before moving back home to Boston to help open @ChampionPTP with @mikereinold.

I learned so much from my interactions with him and how he handled each and every case. His approach has been the standard by which I carry myself as a PT

In this paper, he talks about: ⠀

✔️Availability⠀

✔️Communication⠀

✔️Compassion⠀

✔️Gentleness⠀

✔️A true love of caring for my patients

He also talked about being successful with a ‘purpose driven life’ and discusses 16 key recommendations to a successful orthopaedic career.

Take a look at this article and implement as much as you can tomorrow and every day thereafter.

Happy reading…share with a friend or colleague in the comments section below!⠀

 

Frozen Shoulder or adhesive capsulitis can be debilitating and frustrating for the patient.

This video shows why! Look at all of that red and inflamed tissue of the shoulder capsule. Those neovascular changes are a classic sign of frozen shoulder and the main reason why anti-inflammatories are probably effective in the early stages of the disease.

The pain associated with this presentation is often the main limiting factor, combined with the eventual capsular scarring/contracture that develops soon after.

This scarring leads to a loss of joint arthrokinematics, which leads to loss of mobility, functional loss and atrophy. This spiral effect can last months if not years for some.

Regaining mobility, strength and normal function is not guaranteed but PT can help speed up the process a bit by educating, guiding and mobilizing the patient.

if I see someone in an early stage of frozen shoulder, I usually recommend a cortisone shot followed by more PT to help maintain the patient’s shoulder ROM/strength.

What do you recommend? Any tests you use to help diagnose adhesive capsulitis?

Tag a colleague who may benefit from this post…thanks!⠀

 

With football season here, we’re going to hear a lot of talk about #shouldersaparation or AC joint sprains

The different Grades (Rockwood Classification) of AC Joint sprains are:⠀

1️⃣ AC ligament sprain, AC joint intact, CC ligaments intact⠀

2️⃣AC Joint disruption, Slight vertical separation of ACJ, CC ligament sprain, CC distance wide⠀

3️⃣AC ligament disruption, AC joint dislocated, CC ligaments torn⠀

4️⃣AC ligament disruption, AC joint dislocated, Clavicle displaced posteriorly into Trapezius, CC ligaments completely torn⠀

5️⃣AC ligament disruption, AC joint dislocated, CC ligaments completely torn,⠀
CC distance 100 to 300 % > than normal side.⠀

6️⃣AC ligament disruption, AC joint dislocated, CC ligaments completely torn, Clavicle in subcoracoid position.

I saw this video that @drroddymcgee put out on #Twitter and loved the visual effects to help simplify the typical tissues involved with each type of AC Joint sprain. You can slo find them at @thesportsdocs00 on Twitter too.

Hope it helps to put the AC joint sprains in a better view for you. Share with a colleague who may have an interest…thanks!

 

Return to play after an ACL is a complex decision that involves many variables. The research is telling us a 6-month return to play is too quick and should be delayed up to 9 months.

During that time, the focus of the rehab needs to be on gaining strength, power, and confidence in the patient’s lower body, particularly the quadriceps.

✅ 51% reduction for each month return to sport was delayed until 9 months after surgery…research by Grindem et al BJSM 2016.

Hewett et al have advocated for a possible 2-year return to play wait time to account for graft healing and time for the full strength, power and confidence to return.

I have adjusted my practice to educate my clients for a 9-month return and map out a timeframe from the beginning so they buy into that thinking. Often times, doctors will place a 6 month time for RTP and I have to overcome that thinking and ‘convince’ my clients that it’s too soon.

I think that much time is needed to get the quadriceps muscle back completely and to gain the full confidence in the limb through dynamic activities.

Do you agree? What do you recommend and do you agree with Coach Saban’s answer on RTP at 6 months? 😜

Tag a friend who would benefit from seeing this post or at least seeing Coach Saban…thanks! #RTR #notreally #neutral#switzerland 

 

Failing Rehab

As a PT, this really hit home with me and thought @ericcressey nailed it! See his original post below. @cresseysportsperformance 👇🏻

As with any professional offering – training, accounting, contracting, landscaping, or a host of other services – you’ll see good and bad rehabilitation scenarios. Make sure you do your homework about not only a rehab specialist’s experience and credentials, but also the business model in which he/she operates. 😵#cspfamily #sportsmedicine#rehab #physicaltherapy #physicaltherapist#athletictrainer #athletictraining#sportsperformance #rehabilitation

 

Documenting Knee Extension Range of Motion

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I’ve talked a lot about the importance of regaining knee extension range of motion (ROM) after a knee injury or surgery. In this post, I want to talk about how exactly I believe we should be documenting knee extension range of motion.

I think it’s important because I hear many other medical professionals and students document differently. Hope this post clears the air and gets everyone on the same page.

Knee Extension after ACL

I’ve written about getting knee extension back after an ACL and how to figure out if it was a cyclops lesion or not. You can read this recent post if you like..it should help you gather more information on diagnosis and treatment of a cyclops lesion.

Therefore, I can’t stress the importance of obtaining not just knee extension, but symmetrical hyperextension after a knee injury or surgery.

With that, I feel as if many practitioners are all over the place with their documentation. This makes it difficult to communicate with each other and with the patients.

Documenting Knee Extension Range of Motion

In this video, I discuss the rationale for how I document knee hyperextension. I think it;’s important that we’re all on the same page to avoid confusion.

 

Does this make sense to you? Is this how you document knee hyperextension?

Let’s discuss in the comments section or on social media. You can find me on Twitter or Instagram @lenmacPT.

If you want to learn more about how I treat ACL’s or the knee in general, then you can check out our all online knee seminar at www.onlinekneeseminar.com and let me know what you think.

We cover the anatomy, rehab prescription, ACL, meniscal injuries knee replacements and patellofemoral issues. Furthermore, the course covers both the non-operative and post-operative treatment.t

This is an awesome course if you’re interested in learning more about rehabilitating the knee joint. And if you’re a PT, there’s a good chance you can get CEU’s as well.

The Week in Research Review, etc 8-12-18

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This week’s articles discuss a wide variety of research topics. We discussed:

  1. Risk Factors for ACL tears
  2. Injury after a concussion
  3. EMG of the hip to minimize TFL activity
  4. We made of our posture and applied it to daily tasks
  5. Rhythmic Stabilization drills for the shoulder

Hope you enjoy and make sure to share with your friends and colleagues!

Factors Associated with Non-Contact Anterior Cruciate Ligament Injury: A Systematic Review. Pfeiffer et al IJSPT Aug 2018

This study looks to examine the existing literature for risk factors associated with non-contact anterior cruciate ligament (ACL) injury in both sexes.

A total of 79 full-text articles were reviewed, 55 of which met criteria for inclusion.
✔️Degrading weather conditions⠀
✔️Narrow inter-condylar notch index or width⠀
✔️Increased lateral or posterior tibial plateau slope⠀
✔️Decreased core and hip strength⠀
✔️Potential genetic influence

Individuals with previous ACL injury are at a higher likelihood for injury in the same knee (9.1x risk).

Take a look at this study because they do a good job of breaking down the literature and pointing out some of the common risk factors, both extrinsic and intrinsic.
✅Anatomic factors⠀
✅Neuromuscular Factors⠀
✅Physiologic Factors⠀
✅Biomechanical Factors⠀
✅Genetic Factors

Check out this paper and tag a friend or colleague that may benefit from reading this paper.

 

 

Musculoskeletal Injury Risk After Sport-Related Concussion: A Systematic Review and Meta-analysis – McPherson et al AJSM 2018

This systematic review & meta-analysis looked to determine the odds that athletes will sustain a musculoskeletal injury after a concussion. It was hypothesized that a concussion would increase the risk for MSK injury.

Eight studies met inclusion criteria for meta-analysis reporting 860 male and 163 female athletes with concussion compared with 3719 male and 507 female control athletes without a concussion.

✅Athletes with concussion had 2.11 times greater odds of sustaining a MSK injury compared with control groups and 1.67 times more likely to experience a lower extremity injury.

✅Female athletes with concussion had 2 times greater odds to sustain injury compared with non-concussed female control athletes.

✅Male athletes with concussion similarly demonstrated an increased odds of 2.1x risk for injury compared with non-concussed male control athletes.

Of course, they say further studies are needed to determine the physiological reasoning behind the increased risk for injury after a concussion.

Kinda makes sense, right? Anecdotally I feel like we see this a lot but good to be able to see it in the literature and educate our clients prior to a return to their sport.

 

 

Electromyographic Analysis of Gluteus Maximus, Gluteus Medius, and Tensor Fascia Latae During Therapeutic Exercises With and Without Elastic Resistance. Bishop et al IJSPT 2018

This study looked to determine the gluteal-to-tensor fascia latae muscle activation (GTA index) and to compare electromyographic muscle activation of the GMax, GMed, and TFL while performing 13 commonly prescribed exercises designed to target the GMax and GMed.

Clams with and without resistance, running man gluteus maximus exercise on the stability trainer, and bridge with resistance, generated the highest GTA index respectively.

It seems as if these 3 exercises may give you the biggest bang for your buck when trying to maximize gluteal activity and minimize TFL activity.

Knowing previous research, it seems as if most single-leg-stance exercises are going to give the patient the best gluteal activity per EMG.

Do you guys use any of these exercises? Maybe you need to use them more for your patients looking to improve their hip strength.

Tag a friend who may need bigger 🍑 and may benefit from this research by the esteemed Barton Bishop and his research team! TThanks, carlokoo for modeling!⠀

 

Loss of knee extension after a surgery can greatly impact a patient’s function in the long term.

Although opinions vary greatly in the orthopaedic world, I am a firm believer that regaining symmetrical knee extension is critical for a surgery to be successful.

Shelbourne et al showed that the number one factor in determining long-term satisfaction after a knee surgery was symmetrical knee hyperextension.

Per Benner et al 2016, obtaining full hyperextension that is anatomically normal for most patients does not affect objective stability, ACL graft tear/failure rates, or subjective scores after ACL reconstruction with patellar tendon autograft.

So why do some docs and PT’s still think you only need 0 degrees of knee extension? 🤔⠀

I’m not sure but I’ll tell you it is safe to get hyperextension and here are 3 tools that I use to help regain that last bit of motion.

1. Low load long duration in supine: in my opinion a better position to regain extension and more comfortable than hanging a patient’s leg off of a table. You try doing that and see how you like it!

2. Retro treadmill walking: walking at ~ 1.0 mph on the treadmill has been a great way to get that last bit of motion back and is something they can do at their gym when they’re not with you in PT.

3. Retro cone walking: Again, the goal is to accentuate the end range into hyperextension and it will also challenge their dynamic balance.

So, do you use these techniques with your patients? If not, tag a friend or colleague that may benefit from seeing this post!

 

I love when we can make fun of ourselves & this post nails it! Give @beardthebestyoucanbe a follow!

There is no such thing as good or bad form or posture. There is no right or wrong “exercise”. What does “functional exercise” even mean, & what is this “core” thing everyone keeps talking about whilst planking or crunching?! My newsfeed is blowing up with these so-called “fitness coaches” and “rehab experts” putting all type of crap out there. For 1 of 2 reasons, maybe both⠀
1. Pure ignorance⠀
2. Trying to grow their following by giving people what they think they want⠀
_⠀
The only bad posture is the posture we spend too much time in (shout-out Andreo Spina). Life is not perfect posture & neither is sports⠀
As human beings, our movement capacity should be vast. If we only stay in a small handful of postures we aren’t fulfilling our movement potential and we’re creating more dysfunctions and weaknesses because of it. Your body will devolve rapidly⠀
If you always hammer down the same posture, even if it’s “good posture”, you’re only creating strength and neurological control in that specific posture. So when your body slips out of that particular shape, weakness and injury is the outcome – and that’s not a good sign⠀

There is no such thing as a functional exercise, just functional (or non-functional) joints that can fulfill movement potential. If your joints can’t successfully control a range of motion that is necessary for your daily life, you should probably make that a priority for your training practice⠀

So in conclusion, is it that you need to practice good form (and never lose it, ever)…or practice multiple forms⠀

How do we practice in those ways? Well, it’s going to take a philosophical change first and foremost. Understanding our biology and neurology is important⠀

If you do not know how to train in such ways, find those who do.

 

I use Rhythmic Stabilization drills daily in my practice for most of my upper body patients.

I think they are critical to use to help the patient regain neuromuscular control, a sense of their joint and it’s a great way for the PT to get a sense of how the patient is doing overall.

The hands-on strength training (trying not to trigger dependency by the patient, so relax!) is a great way to gauge a patient’s progress.

Various tools can be used to progress and regress these exercises. I hope these few basic RS drills can give you a basic understanding of what we do @championptp

I hope to get more of these videos out in the future.

Share with your friends and colleagues so they can see these valuable drills for the shoulder joint!

 

 

 

The Week in Research Review, etc 8-5-18

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The Week in Research Review, etc 8-5-18 we discuss a wide variety of topics including:

  • Long-term disability if weak during adolescence
  • Using heat during rehabilitation
  • OKC vs CKC exercises after an ACL
  • Live look at an Achilles rupture (with sound too!)
  • A fun look at the different types of PT’s
  • Congrats to all of the newly licensed PT’s!

Muscular weakness in adolescence is associated with disability 30 years later: a population-based cohort study of 1.2 million Swedish men. Henriksson et al BJSM June 2018.

Conclusion: There was a strong association between muscular weakness and disability. A combination of muscular weakness and low aerobic fitness was an especially important risk factor for disability. This adds weight to call for muscular strength and fitness-enhancing exercise for adolescents in all BMI categories.

This study out of Sweden looked at the associations of muscular strength in adolescence with later disability pension.

A total of 1 212 503 adolescent males aged 16–19 years, recruited from the Swedish military conscription register between 1969 and 1994.

Moral of the story: exercise as an adolescent may help to reduce issues later in life, including the potential for disability.

Taking it 1 step further… why is physical education being cut out of school requirements when studies like this show the potential negative effects of inactivity?!

Turning Up the Heat: An Evaluation of the Evidence for Heating to Promote Exercise Recovery, Muscle Rehabilitation, and Adaptation McGorm et al Sports Medicine June 2018.

Key Points: Animal and human trials have shown that various forms of heating can be used in conjunction with exercise or stress to enhance recovery, adaptation and limit muscle atrophy.

Heating muscle activates protective mechanisms, reduces oxidative stress and inflammation, and stimulates genes and proteins involved in muscle hypertrophy.

Further studies highlighting the differences between various heating modalities will help inform athletes and coaches on the best heating practices for specific situations.

This article has a ton of great information that I highly recommend any PT, strength coach, athletic trainer or massage therapist.

It is a review of the literature and there are still many questions to be answered so, as always, take with a grain of salt.

I am a fan of heating before treatment…I do it daily with 99% of the clients that I see and they love it…so that says something.

What do you think? Do you like to heat your clients up before treatment or before a workout? Tag a friend that may benefit from this post! Thanks, guys!

The Effect of Open- Versus Closed-Kinetic-Chain Exercises on Anterior Tibial Laxity, Strength, and Function Following Anterior Cruciate Ligament Reconstruction: A Systematic Review and Meta-analysis Perriman et al JOSPT July 2018 Level 1a

FINDINGS: There was no significant difference in anterior tibial laxity, strength, patient-reported function, or physical function with the early or late introduction of open-kinetic-chain exercises in those who have had anterior cruciate ligament reconstruction, when compared to closed-kinetic-chain exercises, at all follow-up time points.

They wanted to determine whether OKC quadriceps exercises result in differences in anterior laxity, when compared to CKC exercises, at any time point following ACLr.

Also, they wanted to determine whether there are differences in strength, function, quality of life, and adverse events with OKC quadriceps exercises when compared to CKC exercises at any time point.

Overall, calculated effect sizes showed a slight increased laxity in the OKC groups, particularly for the hamstrings graft. The⠀
pooled difference was not statistically significant (P>.05)

When considering all graft types, there was low- to moderate-quality evidence from 3 studies suggesting that there were no between-group differences in laxity at any time point when OKC exercises were introduced earlier than 6 weeks post ACLR, compared to CKC exercises.

There seemed to be a trend that showed early OKC knee extension was safer after a PTG than a hamstring autograft but protocols varied so data was inconsistent.

Of interest to me, they said “The early introduction of OKC quadriceps exercises did not appear to offer additional significant benefits in function and strength for the average patient post ACLR; therefore, this early introduction is questionable, especially in patients with a hamstring graft.

From Twitter’s @IrineuLoturco showing the moment this athlete ruptured their achilles tendon. Pretty impressive and you can see the eccentric loading of the tendon that caused the rupture. See his original post below…

A very impressive recording of the exact moment when an elite sprinter had an acute and complete rupture of the Achilles tendon. Pay attention to the “boom”.

[REPOST] If there was an ESPY for a post by a PT then @theperformancedoc would definitely get it for these videos! Great job and keep pumping out great content. Give him a follow if you haven’t already!

👇🏻
💥Different Types of Physical Therapists In the Real World💥 SWIPE 👉🏽 (Turn on 🔊) Sometimes we have trouble “turning it off” when we are outside of the clinic. Which one are you?! Tag, Comment, & Share with a Physical Therapist‼️
–
▪️
#ThePerformanceDoc #RehabWithTheDoc
#TeamMovement

Congrats to all of the newly licensed PT’s out there…Welcome to the profession!

My advice to you:

Stay humble and put the patient first, always

Keep learning and try to avoid complacency

The road will seem rough but it does get a little easier. Get experience…as much as you can. Each interaction with a patient is a snapshot to help guide your future interactions.

Put yourself in their shoes… give them the best experience as you would expect to receive if you were sitting on the plinth being asked questions.

Follow people on social media that help you to learn and keep an open mind. Don’t get pulled into 1 system. Take a little from each and package it nicely.

The research is often biased. Opinions come and go. Stay somewhere in the middle…remember the bell curve, always!

Each “system” has huge overlap despite their ‘trademarked’ proprietary information…they all involve motion and strengthening. That’s the key to PT- keep people moving and keep them stronger…or at least keep them positive and hopeful.

I recently wrote a blog post discussing the evolution of a PT. Take a look…the link is in my bio on Instagram.

These words are the basis of my practice. Take what you think is important and apply it to your practice. Good luck, now work on your dives!

A great week of content that I hope you found valuable and willing to share with your friends and colleagues! Thanks for reading!

The Week in Research Review, etc 7-29-18

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Last week was the 1st of my research review that summarized my social media posts from the previous week. It seemed to be well received so I figured I’d continue it. My goal is to help summarize some of the research that I found interesting and package it nicely for my readers.

Each photo contains a link back to a social media feed where you can see the conversation that ensued and maybe chime in…or just be a passive reader and see where the conversation went. You never know where the conversation may go on social media…so be ready! haha!

Socioeconomic Factors for Sports Specialization and Injury in Youth Athletes Jayanthi et al Sports Health Journal 2018.

This study looked at the effect of socioeconomic status (SES) on rates of sports specialization and injury among youth athletes.

They looked at injured athletes between the ages of 7 to 18 years that were recruited from 2 hospital-based sports medicine clinics. They compared these with uninjured athletes presenting for sports physicals at primary care clinics between 2010 and 2013.

They concluded that:
✅High-SES athletes reported more serious overuse injuries than low-SES athletes
✅More hours/wk playing organized sports
✅Higher ratio of weekly hours in organized sports to free play
✅Greater participation in individual sports

I applaud the authors for attempting to bring this very difficult collection of data into a formal research paper. I will say some of the statistics and standard deviations may not make the conclusions as powerful.

I do think this is a good paper to help educate our athletes on injury rates, especially in those that specialize in 1 sport.

What do you think? Tag a friend that may benefit from this article!

From #Twitter’s @retlouping that perfectly sums up what I’ve observed recently on social media with many PT’s.

For some reason, pain science has overtaken most diagnosis and treatment conversations.

It’s as if you get bullied into talking pain science and ignoring our clinical judgment and diagnosis skills. I understand there’s a constant tug-of-war between the biomechanical PT’s and the pain science PTs.

But as usual, the answer usually lies somewhere in between and both groups are correct. The biomechanics of an injury are often important as well as the language we use to explain these tissue biomechanics.

To my fellow clinicians, especially the newer grads and #dptstudent, remember this little cartoon for every future encounter.

Yeah, speak to people in non-threatening tones (in my world it’s just being respectful) but trust me, they WANT to hear what could be going wrong or what may be causing their pain.

Don’t blow off their symptoms and don’t go into depth about pain science because they won’t understand.

Trust me, the clinicians that try to do that often end up losing their patients in the long run.

I hear these stories day after day of people coming to me because the last PT either only talks to them or made them ONLY do strength exercises and it didn’t help their pain.

The PT didn’t listen to them and was so blinded by their pain science background that they ignored the person sitting right in front of them. Remember, the person sitting there will tell you what is going on and what treatment will most help them feel/move better.

Influence of Body Position on Shoulder and Trunk Muscle Activation During Resisted Isometric Shoulder External Rotation Krause et al Sports Health 2018.

The purpose of this study was to examine ER torque and electromyographic (EMG) activation of shoulder and trunk muscles while performing resisted isometric shoulder ER in 3 positions:
✔️Standing
✔️Side-lying
✔️Side plank

Using surface EMG and a hand-held dynamometer, the researchers tried to determine EMG activity of the:
✔️infraspinatus
✔️Posterior Deltoids
✔️Mid traps
✔️Multifidi
✔️External/internal obliques (dominant side)
✔️External/internal obliques (non-dominant side)

EMG values for the infraspinatus were greatest in the side plank position. In general, EMG values for the trunk muscles were also greatest in the side plank position.

✅Their Conclusions: If the purpose of a rehabilitation program is to strengthen the rotator cuff, in particular, the infraspinatus, the side plank is preferred over standing or side lying. If the goal is to simultaneously strengthen both the rotator cuff and trunk muscles, the side plank position again is preferred.

Makes sense but good to see the research and have concrete evidence to back up what we think actually goes on.

Tag a friend who may be interested in this research paper!

Reliability of heel-height measurement for documenting knee extension deficits. Schlegel et al AJSM 2002

Prone heel-height difference of 1cm equates to 1.2 degree difference in knee extension ROM.

Do you use this method to assess knee ROM? I still measure knee extension ROM is supine but find this method helpful as well.

I know my friend and colleague @wilk_kevin has measured this way for many years. i originally saw his use this technique at @ChampionSportsM

I don’t want people to confuse this with prone hangs for knee extension ROM. I am not a fan of that method as I’ve stated in the past.

This is a method to assess knee extension differences, particularly after an ACL reconstruction. I have gone back to using this method for some people that have subtle ROM differences side-to-side.

The patella position (on the plinth or off) did not matter in the study and thigh girth did not appear to make a difference.

I would recommend stabilizing the pelvis to prevent excess ROM from occurring at that region and to better isolate the knee joint.

Have you tried this method? Tag a friend who may benefit from using this ROM method…thanks!

Evidence-Based Best-Practice Guidelines for Preventing #ACL Injuries in Young Female Athletes: A Systematic Review and Meta-analysis Petushek et al AJSM 2018.

Injury prevention neuromuscular training (NMT) programs reduce the risk for anterior cruciate ligament (ACL) injury.

Eighteen studies were included in the meta-analyses, with a total of 27,231 participants, 347 sustaining an ACL injury.

The overall mean training amount was 57 sessions totaling 18.17 hours (roughly 24 minutes per session, 2.5 times per week).

They concluded:

✔️Interventions targeting middle school or high school–aged athletes reduced injury risk to a greater degree than did interventions for college or professional-aged athletes.

✔️Continued exposure to neuromuscular training throughout the sport season seems to enhance prophylactic effects of NMT.

✔️NMT interventions were effective for female basketball, and handball athletes and interventions including various athletes were potentially effective (eg, soccer, basketball, and volleyball).

✔️ Interventions included some form of implementer training (eg, instructional workshop, video, or brochure) on proper program implementation.

✔️Programs including more landing stabilization and lower body strength exercises during each session were most effective.

🤔Programs including balance, core-strengthening, stretching, or agility exercises were no more effective than programs that did not incorporate these components.

✔️ Specifically, programs that included more landing stabilization exercises (eg, drop landings, jump/hop and holds), hamstring strength (eg, Nordic hamstring), lunges, and heel-calf raises reduced the risk for ACL injury to a greater degree than did programs without these exercises.

✅ Wow, lots of great information here. Please share this with a friend or colleague who may benefit from knowing this information.

Hope that helped to catch you up on my posts from this week.

Do you like these weekly updates? Let me know if I should continue…love your feedback!

Thanks for reading!

The Week in Research Review, etc 7-22-18

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The Week in Research Review, etc 7-22-18

I’m trying out this new concept of publishing my social media posts into a nice package for a weekly delivery to my subscribers.

  1. Knee Case Study
  2. Contralateral ACL Strengthening
  3. Shoulder Static Stabilizers
  4. Weighted Ball Research
  5. Glute Activation


This kid came to me the other day with L knee swelling after sliding headfirst into 2nd base during a baseball game.⠀

Continued to play in the game and even pitched the next day, all without pain or loss of motion.⠀

As you can see from the video, he has a bunch of fluid in his knee, medial ecchymosis (bruising) but full pain-free ROM.

Ligamentous tests appear negative and he has absolutely no pain or stiffness with anything.

I took this video to show what appears to be a bursal sac disruption from the impact of his knee into the ground as he was sliding.

The mechanism fits the presentation and clinical exam.

I advised him to monitor his swelling, wear a knee sleeve and continue his activities per his tolerance.

He is going to touch base with me next week to make sure the fluid is dissipating (and not worsening) and he remains asymptomatic.

What do you think? Am I missing anything? What’s your diagnosis? Tag a friend who may be interested in this case.

Cross-education improves quadriceps strength recovery after ACL reconstruction: a randomized controlled trial. Harput et al Knee Surg Sports Traumatol Arthrosc. 2018

This study looked at a group of ACL reconstructed patients that were divided into 3 groups.

All 3 groups performed the same standardized ACL rehab, but one group was the control group that performed the standardized rehab only.

The other 2 groups did either 3x per week extra concentric knee extensions on their uninjured leg for 2 months (beginning at 1-month post-op through 3-months post-op) or additional eccentric knee extensions on their uninjured leg 3x per week for 2 months between months 1-3 post-op.
💪🏼
They found that the quads strength for the concentric group was 28% greater compared to the control group. 💪🏼
The eccentric group was 31% greater when compared to the control group.

Conclusion: Concentric and eccentric quadriceps strengthening of healthy limbs in early phases of ACL rehabilitation improved post-surgical quadriceps strength recovery of the reconstructed limb.

Pretty crazy stuff and one more reason to work on bilateral strengthening with most of our patients, especially when they’re post-op ACL reconstruction.

Do you work on bilateral strengthening? if not, why? If you do, what other studies have you seen that show similar results?
Tag a friend who may benefit from this study or let’s discuss in the comments section!

This picture shows a simplified view of the static stabilizers of the shoulder joint. I highly recommend reading a classic paper by Wilk et al 1997 JOSPT that talks about this and cites a paper from Bowen et al Clin Sports Med 1991 @wilk_kevin

When one is picturing these stabilizers, the superior glenohumeral ligament (SGHL) is most taut when the shoulder is externally rotated at 0 degrees of abduction.

As we progress to 45 degrees of GH abduction, we stress the middle glenohumeral ligament (MGHL) as we externally rotate the humerus.

Finally, at 90 degrees of GH abduction, we stress the inferior glenohumeral ligament (IGHL) as we externally rotate. More specifically, the anterior band of the IGHL.

As we internally rotate at 90 degrees of abduction, we stress the posterior band of the IGHL.

These concepts have rehab implications and should be kept in mind when we’re rehabbing people after an injury or surgery.

For example, if someone has an anterior Bankart lesion (front labral repair), then we need to progress them slowly into external rotation, especially at 45 and 90 degrees of abduction.

Another example would be a rotator cuff repair, like the supraspinatus. We would want to progress them slowly at lower degrees of abduction 0-45 degrees but maybe we can progress them a bit quicker at 90 degrees of abduction.

Hope these concepts make sense because they are very important to understand for many patients with shoulder injuries.

Does this make sense? Have you heard this info before? Tag a friend who may benefit from this post!

Effect of a 6-Week Weighted Baseball Throwing Program on Pitch Velocity, Pitching Arm Biomechanics, Passive Range of Motion, and Injury Rates. Reinold et al Sports Health Jul-Aug 2018. @mikereinold⠀

Our 1st of potentially 3 research articles looking at the effects of weighted balls on youth baseball pitchers.

High school baseball pitchers performed a 6-week weighted ball training program.

Players gradually ramped up over the 6 weeks to include kneeling, rocker, and run-and-gun throws with balls ranging from 2oz to 32 oz.

🤔After 6 weeks, the weighted ball group did increase velocity by 3.3%, 8% showed no change, and 12% demonstrated a decrease in pitch velocity. Also of note, 67% of the control group also showed an increase in pitch velocity.⠀

The weighted ball group had a 24% injury rate although half of the injuries occurred during the study, and the other half occurred the next season. There were no injuries observed in the control group during the study period or in the following season.

The weighted ball group showed almost a 5-degree increase in passive shoulder external rotation, also known biomechanically as the late cocking position or layback position.

There were no statistically significant differences between pre- and post-testing valgus stress or angular velocity in either group.

✅Our conclusion: Although weighted-ball training may increase pitch velocity, caution is warranted because of the notable increase in injuries and physical changes observed in this cohort.

Some great Glute 🍑thoughts buy the @theprehabguys. Check out their videos and content for some great ideas that you can add to your practice!⠀
👇🏼⠀
___________________________________________________________________⠀
Episode 705: “Hip Prep for Glute Activation”⠀
.⠀
Tag a friend looking for a glute🍑 killer!⠀
Hip prep is a series of 6 exercises I’ve adopted from my girlfriend @smenzz and her clinic @eliteorthosport. I use it with my patients to prime the glutes and lower body in general before getting into more dynamic and plyometric activities. I will make the statement right now: if done RIGHT, it’s an absolute glute killer & I promise you that you will feel your glutes!⠀
.⠀
I like these 6 exercises in particular for a variety of reasons.⠀
✅They challenge the glutes in all 3 planes of motion.⠀
✅They hit all types of muscle contractions: isometric, concentric, and eccentric⠀
✅They are performed upright in a functional position⠀
✅There is a variety of double leg, single leg, and split stance variations⠀
✅They train proper lower extremity alignment in a variety of hip and trunk flexed/neutral/extended positions⠀
.⠀
The 6 exercises are:⠀
1️⃣3 way clams: 5 per leg per position⠀
2️⃣Side steps: Alternating steps to the left and right starting with 1 step all the way to 5 steps⠀
3️⃣Monster Walks: 10 steps forward, 10 steps backwards⠀
4️⃣W’s: 10 steps to the left, 10 steps to the right⠀
5️⃣Squats: 10 squats⠀
6️⃣Single leg fire hydrants: 30s per side⠀
.⠀
💡Understand that you first need to teach these exercises in isolation first, before throwing someone all 6 at once⠀
.⠀
Have fun!⠀

Hope this helps you keep up to date and fulfill my goal of this website…simplify the literature and bring great content to you so you can apply it 1st thing Monday morning! Happy Reading! 👊🏼

Follow me on Social Media here:

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Quadriceps Stretching after Knee Surgery: A tweak to the technique

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Obtaining full knee flexion after a knee surgery or knee injury can be difficult for some. The transition from passive knee flexion in seated (my preferred) or supine (not preferred!) can be a challenge for the physical therapist, once they are starting to work on quadriceps stretching. This blog post serves to help modify the prone quadriceps stretching technique after a knee surgery. The goal is to better localize the stretch to the muscle and not cause further pain and discomfort to the patient.

In the past, I’ve talked about restoring knee extension after surgery, particularly after an ACL reconstruction. If you missed that blog post, you can read it here here and here. You might say I have a slight obsession with talking about ROM after surgeries.

For a common surgery like an ACL reconstruction, I often see people present to me without full ROM. That’s why I continue to discuss techniques that can help other clinicians and patients restore their ROM before it’s too late.

Why is full ROM important after knee surgery?

Well, we think there’s a pretty close link between long-term issues and not restoring knee ROM.

In Shelbourne’s article in AJSM 2012, he states that “abnormal knee flexion at early follow-up, abnormal knee extension at final follow-up, abnormal knee flexion at final follow-up, partial medial meniscectomy, and articular cartilage damage were significant factors related to the presence of osteoarthritis on radiographs.”

He also went on to say that you had a 2x increased risk of knee arthritis if you don’t get full ROM. This was similar to having had a meniscectomy surgery or articular cartilage loss.

For such a simple concept, we PT’s can really affect the long-term outcomes for our patients if we don’t get full knee ROM. So why are people still struggling years after their knee surgery? I don’t know… but it’s troubling and definitely avoidable in most patients.

Check out this study from the Journal of Athletic Training in 2015. They discuss how a patient’s flexion ROM can help significantly improve their IKDC scores (functional score) during the 1st 2 months post-op.

Simple Modification to Prone Quadriceps Stretching

I began to think about this topic when I was reading a Facebook post in one of the PT groups and it made me think. We always talk about knee extension and there is some research that discusses the importance of safely obtaining knee extension ROM. I put this study in a recent Instagram post and got some pretty good response.

It seems that whenever I talk about knee ROM after a surgery, people’s ears perk up. Let’s go to the video and talk about a simple technique I use to improve knee flexion ROM after a surgery or injury.

As you can see, a small tweak to your technique can really make a big difference. Again, I’m not sure what exactly is going on. It seems like I’m adjusting the position of the tibia just slightly and that is influencing the location of the stretch toward the quads. If I take my hand away, then they feel the pain and pressure in the front of the knee and it does not feel good.

Slow and Steady Knee Flexion

For the record, I’m not one of those PT’s that likes to be super aggressive and push my patients to tears. I’ve inherited those patients from other PT’s and that technique often fails.

When I talk about improving prone knee flexion, I’m talking about improving quadriceps flexibility and length. Remember, if you have someone lie on their stomach and you try to flex their knee, you’re either limited by pain, joint capsule or the rectus femoris (2-joint muscle.)

It’s not until I think the knee has reached a period of calm that I begin pushing into prone flexion. I’m not using this to crank and get 5 more degrees for my documentation. I’m using this at an appropriate time to improve muscle flexibility and maybe get that end range of motion that is so important.

Remember, obtaining full knee ROM is a process, but a very important process. it’s not going to happen quickly, especially if you’re wicked aggressive (my Boston comes out when I get fired up!!)

Try it for yourself

So this week, try this technique out on one of your clients who may be struggling with regaining their knee flexion ROM. I’m curious to know what you think and if it works for you. As we’ve seen, it’s very important to get that full ROM back after a surgery and this is one modification that I think can help you immediately.

 

 

If you want to learn more about how I treat ACL’s and other knee injuries, then you can check out our all online knee seminar. If interested, check it out at www.onlinekneeseminar.com and let me know what you think. We cover the anatomy, rehab prescription, ACL, knee replacements and patellofemoral issues both non-operative treatment and post-operative treatment. This is an awesome course if you’re interested in learning more about rehabilitating the knee joint. And if you’re a PT, there’s a good chance you can get CEU’s as well.

Loss of extension after ACL surgery: How to assess for a cyclops lesion

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Loss of extension after an ACL reconstruction can be debilitating for the patient. It’s not as common as you would think but I see it enough in the clinic from people that are months out from surgery. Usually, this loss of knee extension after an ACL reconstruction is caused by a cyclops lesion. Let’s dive deeper into this!

Often times, they’ll present with anterior knee pain, posterior knee soreness and a relatively weakened quadriceps muscle that just won’t return. No matter what they do to get the motion back, the knee just never feels normal.

I’ve written about the loss of extension after an ACL reconstruction in the past. In this post, I discussed how I like to work on knee extension immediately after an ACL surgery. There are a few ways that I think are most effective and with minimal patient efforts.

What is a Cyclops Lesion?

For those not familiar, a cyclops lesion is a wad of scar tissue in the anterior aspect of the knee joint. It is believed to be a remnant of the previous ACL stump that had remained during the reconstruction surgery. At least that’s one theory. Another theory states that it may be fibrocartilage as a result of drilling the tibial tunnels.

Whatever the case, this arthrofibrosis (scar tissue) physically blocks the knee joint from locking out into full extension. Check out this MRI that shows the scar tissue in the anterior knee.

Cyclops lesion in the anterior knee blocking full (hyper) extension

How do I assess for a cyclops lesion after ACL surgery?

In this video, I describe why and how I assess for a cyclops lesion. Check it out.

Is it a Cyclops lesion or just a tight knee?

From the video, you can clearly note that anterior pain, in my experiences, is most often related to a cyclops lesion. Other factors to consider include:

  1. temporary/transient gains in extension
  2. anterior knee pain after increasing activity
  3. poor patella mobility
  4. quads just won’t come back
  5. continued hamstring/calf soreness

These are tell-tale signs that there’s more going on and you should refer back to the doctor so they can order an MRI to rule in/out the anterior scarring. If diagnosed, the best (and only) option is to have a knee scope and remove that scar tissue.

There’s nothing else that can be done. No PT, injections or manual therapy can restore full symmetrical knee extension.

The scar tissue needs to be removed by surgical excision. Aggressive PT should commence immediately after surgery to restore the extension range of motion.

The Best and Easiest Way to Restore Knee Extension after an ACL

Rehab after an ACL is never easy. There are many things that could affect a patient’s outcome. I’ve treated hundreds of patients after an ACL reconstruction and each one is a unique challenge. I wrote about this in a previous post here..check it out and let me know what you think.

I put this video together for Mike Reinold’s website so you could see what I exactly do to gain knee extension back….and why I’m not a fan of prone hangs. Hope it helps with some of your knee patients.

Final Cyclops Thoughts

As a PT or athletic trainer, don’t blame yourself if the patient needs another surgery to remove the scarring. It seems as if it was inevitable and was going to occur no matter the efforts to work on knee extension. I think the lesson here is:

  • work on extension early and often
  • maintain good compliance at home
  • assess/measure each visit to determine gains or losses
  • early patella mobility and knee PROM
  • get the pain and swelling out as quickly as possible
  • refer back to the doctor if the ROM not improving despite your best efforts

Hope this post helps you get better outcomes for your ACL patients!

 

If you want to learn more about how I treat ACL’s, then you can check out our all online knee seminar. If interested, check it out at www.onlinekneeseminar.com and let me know what you think. We cover the anatomy, rehab prescription, ACL, knee replacements and patellofemoral issues both non-operative treatment and post-operative treatment. This is an awesome course if you’re interested in learning more about rehabilitating the knee joint. And if you’re a PT, there’s a good chance you can get CEU’s as well.

Anterior Knee Pain- A Test for Fat Pad Irritation

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We as physical therapists are constantly seeing patients with anterior knee pain with a very vague history. Often times, there’s not a specific onset or mechanism of injury. With that, it seems as if the retro patellar fat pad is a common source of pain in many people and is commonly overlooked.

What actually hurts in the knee?

Whenever I am evaluating someone with knee pain, I always keep in mind the Dye et al AJSM article from 1998. In my opinion, this is a keeper for all PT’s and future PT’s to have in their arsenal of top literature papers.

For those that are not familiar, let me explain it a bit.

Basically, San Francisco orthopaedic surgeon Dr. Scott Dye had his knee scoped without any anesthesia. That’s right, classic beast mode!

He did have local anesthesia (for the record), so they could make the incisions…otherwise, he was awake and alert for the whole procedure.

This allowed him to report back to his colleagues (one being his brother) an actual pain response as they were poking away at the different structures within the knee. He ranked the pain on a 0-4 scale with 0 being pain-free (patella cartilage) and 4 being a severe pain (fat pad, anterior synovium, joint capsule.)

You can read the article to get the full gist (and I HIGHLY RECOMMEND this!) but my point is to let you realize that there are only certain structures capable of causing severe pain in the anterior knee.

Their Findings

Cartilage is avascular and aneural. It has no blood supply or nerves that innervate it. None! So the whole chondromalacia patella diagnosis attempting to implicate a maltracking patella is often hogwash.

But the fat pad, anterior synovium, and anterior capsule are extremely painful and are often involved, I believe, in patients that we see on a daily basis.

In my opinion, this is a diagnosis that sees us more than we see it. Like thoracic outlet syndrome… we can talk about that a different day though.

Back to the point of the blog.

1 Test for Fat Pad Assessment

Assessing the knee and asking the right questions is critical. Besides a tremendously great subjective, there’s one test that I use to rule in or out a fat pad irritation. Check out the video below:

I promise you this test is a great way to establish a pretty clear diagnosis and reassure the patient that a specific structure may be the issue.

When it’s painful, its pretty obvious and the patient can immediately report back to you their symptoms. I test for this a bunch in a given week and it’s not always present. But when someone presents with a positive finding, it’s pretty relieving to them (believe it or not.)

Differential Diagnosis

Keep in mind, my differential diagnosis is all over the place at times.  With knee pain you need to consider:

  1. Meniscus (see my previous blog post)
  2. ITB
  3. Osteochondral lesion
  4. Patella tendonitis
  5. Pes anserine bursitis
  6. MPFL sprain
  7. Hamstring strain
  8. Plica syndrome
  9. MCL/LCL
  10. Tumor

That’s a bunch to consider for someone who can’t really explain why or when their injury occurred. That’s why I still believe this overuse injury sees us more than we see it.

Treatment of Fat Pad Irritation

This one can get a bit tricky. Again, it’s often due to an overuse injury. In others, it’s attributed to kneeling on it for too long or banging it against something. In those more acute cases, the answer is pretty straightforward. Ice, motion and progressive return to their function.

In the overuse group, which is more prevalent in my opinion, we need to figure out which stimulus is causing the issue. It’s often due to starting a new program or ramping up too quickly during some training event.

In these people, I need to modify their volume of training or destress the area by giving them new activities that they can do pain-free…but only for a short period of time.

Along with activity modification, a course of some form of modality (yup, the M-word was used) can help expedite the pain control. I still have a special place in my heart for iontophoresis with dexamethasone. I’ve had tremendous results in patients with fat pad irritation.

I also like to use a low-level laser to help with the healing process (future blog post alert!) I’ve used it on my self for various ailments and even my dog after her ACL surgery. I’m definitely a believer in the healing power of the laser when applied in the correct situation.

Besides all of that, I would also want to assess the person’s movements and attempt to adjust any motions or movements that I thought could contribute to the knee pain. Often times, there’s an underlying weakness or misconception of a weakness that needs to be explained to the patient.

These things run their course for a few weeks but should improve pretty quickly if handled correctly. Patient gratification is pretty obvious because their pain diminishes after a session or 2 and they buy into the program pretty quickly.

Fat Pad Conclusions

Infrapatellar fat pad irritation can be functionally debilitating. I believe it presents itself pretty often in the clinic, more than most PT’s realize. Use my test above to see if it truly is a fat pad issue. Here’s a nice open-access article that you can read to learn more about the fat pad.

Remember, the test should be pretty obvious and locally oriented. If pain-free, then move on. If not, then try some of my above recommendations. It’s usually an overuse issue so you need to adjust their volumes and maybe some form of mechanics.

Mike Reinold and I discuss this and much more about how we treat the knee conservatively. Check it out in our acclaimed all online knee course www.onlinekneeseminar.com.