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Webinar

Watch Investigating Injuries webinar

Photo of Dr. Jonathan C. Sum Photo of Dr. Daniel G. Stewart

August '26

8:00AM PT │ 11:00AM ET │ 4:00PM BST

50 minutes

Investigating Injuries:

Rotator Cuff Tendinopathy in Athletes

An athlete cleared a manual shoulder exam. The strength data told a different story. Dr. Daniel Stewart and Jonathan Sum work through the case, the two mechanisms behind rotator cuff tendinopathy, and the assessment that tells them apart.

webinar hosts

Meet the experts:
your webinar hosts

Shoulder Rehabilitation

Sports Physical Therapy

Orthopedic Specialist

Associate Professor of Clinical Physical Therapy, University of Southern California

Jonathan Sum, PT, DPT, OCS, SCS, FASSET, is an Associate Professor of Clinical Physical Therapy at the University of Southern California, where he directs the USC Physical Therapy Upper Extremity Athlete Fellowship. He is a Board Certified Orthopedic and Sports Clinical Specialist with a focus on shoulder rehabilitation and sports injury in adolescent and youth athletes.

Dr. Jonathan C. Sum
PT, DPT, OCS

Dr. Daniel G. Stewart PT, DPT

Biomechanics

Investigating Injuries:
Rotator Cuff Tendinopathy in Athletes

An athlete's shoulder can clear a manual exam and still be headed for trouble. Dr. Daniel Stewart and Jonathan Sum examine rotator cuff tendinopathy in athletes, from the two mechanisms driving it to the objective data that tells you what to do next.

Key topics &
takeaways

Mechanisms & Assessment

Tensile overload and subacromial impingement in rotator cuff tendinopathy, and the integrated shoulder and scapular assessment that separates them.

Case Review

A real case reviewed using objective strength data, including force output and rotator cuff strength ratios

Rehabilitation

A criteria-based progression from isolated rotator cuff loading to integrated overhead and sport-specific strengthening.

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