Extensor Digitorum Muscle
Extensor Carpi Ulnaris – Attachments, Action & Innervation
Extensor Carpi Ulnaris is one of the muscles that comprise the superficial compartment of the posterior forearm compartment.
Attachments of the Extensor Carpi Ulnaris Muscle: Origin and Insertion
Origin (proximal attachment)
a. Lateral epicondyle of humerus.
Insertion (distal attachment)
a. Base of 5th metacarpal (dorsal surface).
Actions of the Extensor Carpi Ulnaris Muscle:
b. Ulnar deviates (adducts) hand at the wrist.
Nerve to the Extensor Carpi Ulnaris muscle and its spinal segment:
a. Radial nerve (C6-C8).