Extensor Indicis Proprius
Original Editor - Shreya Pavaskar
Top Contributors - Shreya Pavaskar and Shaimaa Eldib
Description[edit | edit source]
Extensor Indicis Propius is a narrow elongated skeletal muscle situated in deep layer of posterior compartment of the forearm along with Supinator, Abductor Pollicis Longus, Extensor Pollicis Longus and Brevis. It is responsible for the movement of the index finger.[1]
Origin[edit | edit source]
It originates from the posterior surface of Ulna (distal to Extensor Pollicis Longus muscle) and interosseous membrane.[1]
Insertion[edit | edit source]
It inserts on the base of the second proximal phalange and into the tendon of Extensor Digitorum.[2]
Nerve[edit | edit source]
It is innervated by the Posterior Interosseous nerve which is a deep branch of Radial nerve ( 7th and 8th cervical nerve root).[1]
Artery[edit | edit source]
It is supplied by the Posterior Interosseous branch of the Ulnar artery and perforating branches of the Anterior Interosseous artery.[3]
Function[edit | edit source]
Clinical relevance[edit | edit source]
Assessment[edit | edit source]
Treatment[edit | edit source]
Resources[edit | edit source]
- ↑ 1.0 1.1 1.2 Drake R, Vogl AW, Mitchell AW. Gray's Anatomy for Students E-Book. Elsevier Health Sciences; 2009 Apr 4.
- ↑ Cael C. Functional anatomy: musculoskeletal anatomy, kinesiology, and palpation for manual therapists. Jones & Bartlett Learning; 2020 Aug 3.
- ↑ Revol MP, Lantieri L, Loy S, Guérin-Surville H. Vascular anatomy of the forearm muscles: a study of 50 dissections. Plastic and reconstructive surgery. 1991 Dec;88(6):1026-33.
