-
Anterior Deltoid
- OriginLateral 1/3 of the clavicle
- Insertionlateral aspect of humerus into the deltoid tuberosity
- Action
- Shoulder flexion
- Internal rotation
- Horizontal adduction
- Innervation
- axillary nerve
-
Middle Deltoid
- Origin
- Acromion Process
- Insertionlateral aspect of the humerus @ deltoid tubercle
- Actionabduction
- Innervation
- axillary nerve
-
Posterior Deltoid
- Origin
- scapular spine
- Insertion
- lateral aspect of the humerus @ deltoid tubercle
- Action
- Shoulder extension/hyperextension
- Shoulder external rotation
- Horizontal abduction
- Innervation
- axillary nerve
-
Supraspinatus
- Origin
- supraspinatus fossa of scapula
- Insertiongreater tubercle of humerus (inferior to acromion process)
- ActionShoulder abduction
- Innervationsuprascapular nerve
-
Infraspinatus
- Origininfraspinatus fossa of scapula
- Insertion
- greater tubercle of humerus
- Action
- External rotation
- Horizontal abduction
- Innervation
- suprascapular nerve
-
Teres Minor
- Origin
- Axillary border of scapula
- Insertion
- greater tubercle of humerus
- Action
- External rotation
- Horizontal abduction
- Innervation
- axillary nerve
-
Subscapularis
- Origin
- Subscapular fossa
- Insertion
- Lesse tubercle (through armpit)
- Action
- internal rotation
- Innervation
- upper & lower subscapular nerves
|
|
