Global InformationExtensor indicis et medii communis muscle information
| Extensor indicis et medii communis | |
|---|---|
 Extensor indicis et medii communis (EIMC) and extensor indicis proprius (EIP) | |
| Details | |
| Origin | posterior distal third of ulna and interosseous membrane |
| Insertion | index finger and middle finger |
| Artery | posterior interosseous artery |
| Nerve | posterior interosseous nerve |
| Actions | extends index finger and middle finger |
| Identifiers | |
| Latin | musculus extensor indicis et medii communis |
| Anatomical terms of muscle [edit on Wikidata] | |
The extensor indicis et medii communis is a rare anatomical variant in the extensor compartment of forearm. This additional muscle lies in the deep extensor layer next to the extensor indicis proprius and the extensor pollicis longus. The characteristics of this anomalous muscle resemble those of the extensor indicis proprius, with split tendons to the index and the middle finger. This muscle can also be considered as a variation of the aberrant extensor medii proprius.