
28/04/2025
🟢Proximal Attachments
✔️Triceps
🔹Triceps brachii muscle inserts on the posterior surface of the olecranon process, the prominent bony projection at the proximal end of the ulna.
✔️Anconeus
🔹Anconeus muscle attaches to the olecranon process, assisting in elbow extension.
✔️Brachialis
🔹Brachialis muscle inserts on the coronoid process and ulnar tuberosity, playing a role in forearm flexion.
🟢Shaft and Distal Attachments
✔️Flexor Carpi Ulnaris
🔹This muscle originates from the posterior border of the ulna and inserts on the pisiform bone and base of the fifth metacarpal, aiding in wrist flexion and adduction.
✔️Pronator Teres
🔹Pronator teres muscle originates from the medial epicondyle of the humerus and the coronoid process of the ulna, contributing to pronation of the forearm.
✔️Flexor Digitorum Superficialis
🔹This muscle originates from the medial epicondyle of the humerus, the coronoid process of the ulna, and the ulnar tuberosity, aiding in finger flexion.
✔️Flexor Digitorum Profundus
🔹Flexor digitorum profundus muscle originates from the anteromedial surface of the ulna and inserts on the distal phalanx of each finger, enabling finger flexion.
✔️Pronator Quadratus
🔹This muscle attaches to the distal anterior shaft of the ulna and the radius, contributing to pronation of the forearm.
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