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Sports Physical Therapist · Boston, MA
LENNY
MACRINA
MSPT · CSCS · Co-founder, Champion PTP
Clinical educator, researcher, and sports PT with 20+ years helping athletes recover smarter. Follow along for evidence based rehab content, and grab my courses below.
Featured Course
COMPLETE KNEE
EVALUATION AND TREATMENT
The online knee course I teach with Mike Reinold. ACL reconstruction, patellofemoral pain, meniscus, progressive loading and return to sport, built for what you actually see in the clinic.
ACL, shoulder and elbow rehab, new research and course updates. Written for PTs, ATs and physicians.
📍 Boston, MA🎓 20+ Years in Sports PT📸 30K Instagram Followers📝 MedBridge Course Instructor🏆 Co-founder, Champion PTP
Education
COURSES AND CE
Evidence based continuing education built for PTs who want to go deeper on sports and orthopedic rehab.
⭐ Featured Course
Complete Knee
Evaluation and Treatment
with Mike Reinold
The definitive knee rehab course for sports PTs. ACL reconstruction, patellofemoral pain, progressive loading, and evidence based return to sport criteria, built alongside Mike Reinold. The most practical, clinical knee course available.
Continuing Education
MedBridge
CE Courses
Lenny Macrina on MedBridge
Access Lenny’s full CE library: shoulder rehab, ACL recovery, strength and conditioning for clinicians, and more. Save on a yearly subscription with the promo code below.
Research
PUBLISHED RESEARCH
20 years of peer reviewed research on the throwing shoulder, the elbow, and knee and ACL rehab.
Four interval throwing programs (6 weeks, 12 weeks, 5 months and 7 months) built from biomechanical workload data, so you can match the return to throwing plan to the injury or surgery.
A modern interval throwing program built on workload data, with a smoother ramp back to competition after injuries like Tommy John surgery.
International consensus guidelines for ACL rehab in 10 to 18 year old athletes, from phase 1 exercises to return to sport criteria.
Where the science stands on weighted baseballs: what they do for velocity, and the injury risk that comes with them.
Weighted balls bumped velocity about 3%, but 24% of pitchers in the training group got hurt, while none in the control group did.
Pitchers without enough extra external rotation on their throwing side were 2.2x more likely to land on the injured list with a shoulder injury, and 4x more likely to need shoulder surgery.
Co-authored with Kevin Wilk, Dr. James Andrews, Glenn Fleisig and Mike Reinold, among others.
From the Blog
CLINICAL EDUCATION
What Actually Changes After ACL Surgery
A study tracked 30 athletes at 3, 6, 9 and 12 months after ACL reconstruction. Here is what changed, and why symmetry alone does not mean ready.
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Why Your Quad Tendon ACL Patient’s Quad Is Lagging
Quad tendon ACL grafts are on the rise. Here is why the quad lags after a QT graft and the rehab change most clinicians are missing.
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Meniscus Repair Rehab: What Does the Evidence Actually Say?
Root, peripheral or complex, meniscus repairs are not all the same. What the research says on weight bearing, ROM and rehab for each repair type.
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Simplifying ACL Rehab
ACL return to play testing keeps getting more complicated. A simple, practical approach to ACL rehab and testing that works in a normal outpatient clinic.
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Diagnosed with an elbow UCL Tear- Reconstruction or Internal Brace surgery?
Diagnosed with a UCL tear? A plain English look at Tommy John reconstruction vs the internal brace, return to play times, and what the evidence says.
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Infraspinatus atrophy in a baseball pitcher with a UCL sprain
This post discusses the evaluation and treatment of a college baseball pitcher with a finding of infraspinatus atrophy due to a spinoglenoid notch cyst.
Read Post →Listen In
THE ASK MIKE REINOLD SHOW
Check me out on the Ask Mike Reinold Podcast, answering real questions from PTs, ATs and strength coaches on rehab and performance. Hit play and listen right here.
We're taught to treat systematic reviews and meta-analyses as the gold standard. They sit at the top of the evidence pyramid, so when one lands in our inbox saying an intervention works, we tend to believe it and...
On Instagram
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LENNY
MACRINA
Sports physical therapist, clinical researcher, and educator based in Boston. Co-founder and Director of PT at Champion PT and Performance, and a MedBridge course instructor with 20+ years treating athletes at every level.
- Master of Science in Physical Therapy (MSPT)
- Certified Strength and Conditioning Specialist (CSCS)
- Co-founder, Champion PT and Performance, Waltham, MA
- MedBridge Course Instructor
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