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IOAN
Muscles of the Elbow/ Forarm
| muscle | origin | insertion | action | innervation |
|---|---|---|---|---|
| biceps (short head) | coracoid process of scapula | radial tuberosity of radius | elbow flexion and forearm supination. (palm down, elbow turning down/inside of elbow facing up. | musculocutaneous nerve |
| Biceps (long Head) | supraglenoid tubercle of scapula | radial tuberosity of radius | elbow flexion and forearm supination. (palm down, elbow turning down/inside of elbow facing up. | musculocutaneous nerve |
| Brachioradialis | lateral supracondyler ridge on the humerus | styloid process of the radius | elbow flexion | radial nerve |
| Triceps (long head) | infraglenoid tubercle | olecranon process of ulna | elbow extension | radial nerve |
| Triceps (Lateral Head) | inferior to greater tubercle on posterior humerus | olecranon process of ulna | elbow extension | radial nerve |
| Triceps (medial Head) | posterior surface of humerus | olecranon process of ulna | elbow extension | radial nerve |
| supinator | lateral epicondyle of humerus and adjacent ulna | anterior surface of the proximal radius | forearm supination (palm facing up) | radial nerve |
| pronator quadratus | distal one fourth of ulna | distal one fourth of radius | forearm pronation(palm down) | median nerve |
| Pronator teres | medial epicondyle of humerus and coronoid process of ulna | lateral aspect of the radius at its midpoint | forearm pronation and assistive in elbow flexion | median nerve |