The patient presents to diagnostic musculoskeletal ultrasound for pain-free shoulder weakness following an episode of shoulder pressing 2 weeks prior. The patient denies any radicular upper extremity symptoms or neck pain at this point in time. Shoulder weakness on physical exam was isolated only to external rotation.
Diagnostic musculoskeletal ultrasound located full thickness tears in the supraspinatus and subscapularis with a subluxed long head of biceps medially over the lesser tuberosity. There is a paralabral cyst noted at the spinoglenoid notch compressing into the suprascapular nerve.
Diagnostic musculoskeletal ultrasound was able to locate the source of the patient's pain-free shoulder weakness and guide medical decision making for the management of the patient's sympotms.