Intermediate
Technical
IVT
subscapularis
Pronunciation: sub-skap-yuh-LAIR-iss
Large triangular muscle of the rotator cuff that internally rotates and stabilizes the shoulder.
Full Definition
The subscapularis is the largest and strongest muscle of the rotator cuff, originating from the subscapular fossa of the scapula and inserting on the lesser tubercle of the humerus. This muscle primarily functions to internally rotate the humerus and provides anterior stability to the glenohumeral joint. Subscapularis tears are common in shoulder injuries and require specific rehabilitation techniques that often differ from other rotator cuff muscle rehabilitation approaches.
Usage
Usage note: Do not hyphenate; part of the rotator cuff complex along with supraspinatus, infraspinatus, and teres minor.
In Context
- "MRI revealed a full-thickness tear of the subscapularis tendon requiring surgical repair." — Diagnostic imaging report
Don't confuse with
supraspinatus
infraspinatus