Shoulder · Muscle
Subscapularis
| 1. What it is | The largest rotator cuff muscle, on the front surface of the shoulder blade. |
|---|---|
| 2. Where it is | Under the shoulder blade to the front of the humeral head. |
| 3. Function | The only cuff muscle that internally rotates; resists anterior dislocation. |
| 4. Role in movement | Internal rotation. |
| 5. Interactions | Strengthened by banded internal rotation; important in instability rehab. |
| 7. Common pain locations | Front of shoulder and armpit. |
| 6. Common injuries & conditions | Rotator cuff injury (tear / tendinopathy) |
| 8. Relevant rehab exercises | Shoulder isometrics (multi-direction), Internal and external rotation mobility (AROM), Banded internal rotation, Shoulder external rotation stretch (door frame) |
Interactive diagram · Shoulder complex