Shoulder · Muscle
Deltoid
Completeℹ Additional explanation
| 1. What it is | The large rounded muscle that caps the shoulder (front, middle, back parts). |
|---|---|
| 2. Where it is | From collarbone, acromion and scapular spine to the outer upper arm. |
| 3. Function | Main lifter of the arm. |
| 4. Role in movement | Flexion (anterior), abduction (middle), extension and horizontal abduction (posterior). |
| 5. Interactions | Force couple with the rotator cuff during elevation. |
| 7. Common pain locations | Referred cuff pain often felt over the deltoid. |
| 6. Common injuries & conditions | Rotator cuff injury (tear / tendinopathy) |
| 8. Relevant rehab exercises | Shoulder isometrics (multi-direction), D2 raise / D2 flexion, Scaption raise, Shoulder clock (banded plank), Dolphin press, Half-kneeling single-arm shoulder press |
Interactive diagram · Shoulder complex