Extensor digitorum muscle
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Extensor digitorum (ED), also known as extensor digitorum communis, is a muscle of the superficial layer of the posterior compartment of the forearm and with other extensor muscles arises from a common tendon attached to the lateral epicondyle of the humerus. ED represents a medial group of superficial extensor muscles. ED passes under an extensor retinaculum which holds it tight and passes through the 4th extensor compartment of the wrist.
Summary
- origin: lateral epicondyle of humerus
- insertion: middle, distal phalanges on posterior surface; extensor expansions of digits 2-5
- innervation: radial nerve (C6-C8)
- action: extension in metacarpophalangeal joint
-<p><strong>Extensor digitorum (ED)</strong>, also known as <strong>extensor digitorum communis</strong>, is a muscle of the superficial layer of the posterior compartment of the <a href="/articles/forearm">forearm</a> and with other extensor muscles arises from a common tendon attached to the lateral epicondyle of the humerus. ED represents a medial group of superficial extensor muscles. ED passes under an extensor retinaculum which holds it tight.</p><h4>Summary</h4><ul>- +<p><strong>Extensor digitorum (ED)</strong>, also known as <strong>extensor digitorum communis</strong>, is a muscle of the superficial layer of the <a href="/articles/posterior-compartment-of-the-forearm">posterior compartment of the forearm</a> and with other extensor muscles arises from a common tendon attached to the lateral epicondyle of the <a href="/articles/humerus">humerus</a>. ED represents a medial group of superficial extensor muscles. ED passes under an extensor retinaculum which holds it tight and passes through the 4th <a href="/articles/extensor-compartments-of-the-wrist">extensor compartment of the wrist</a>.</p><h4>Summary</h4><ul>
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