EDC
Also written as: EDC — Extensor digitorum communis
Extensor digitorum communis - the muscle responsible for extending the fingers at the metacarpophalangeal joints.
Full Definition
The extensor digitorum communis (EDC) is a muscle located in the posterior compartment of the forearm that extends the medial four fingers. The muscle originates from the lateral epicondyle of the humerus and divides into four tendons that insert into the dorsal aspects of the fingers via the extensor mechanism. In hand surgery, EDC injuries or pathology can result in finger extension deficits, and surgical repair or reconstruction may be necessary. Understanding EDC anatomy is crucial for editors reviewing surgical reports involving extensor tendon injuries, particularly those affecting multiple digits simultaneously.
Usage
Usage note: Distinguish from EDM (extensor digiti minimi) which affects only the little finger.
In Context
- "The EDC tendon showed complete rupture at the level of the dorsal retinaculum." — Operative report
- "Reconstruction of the EDC was performed using tendon graft from the palmaris longus." — Surgical procedure note