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International Journal of Recent Trends in Science and Technology, ISSN 2277-2812 E-ISSN: 2249-8109

Volume 15, Issue 2, June 2015 pp 236-237

Case Report

Accessory palmaris longus muscle: An unusual variation

Gopal G Bagal1, Ramdas Surwase2

1Associate Professor, Department of Anatomy, ACPM Medical College, Sakri road, Dhule-424001, Maharashtra, INDIA.

2Associate Professor, Department of Anatomy, MIMSR Medical College, Latur, Maharashtra, INDIA.

The Palmaris longus muscle is the most variable muscle present in the body, phylogenetically degenerating muscle, present in the flexor compartment of the forearm. This muscle exhibit significant anatomical variations compare with other muscle of the upper extremity. The most frequent variation is a complete absence of the muscle, but number of other variations also exhibit, these include reversed, bifid, or hypertrophied Palmaris longus muscle. In this case study a variation of Palmaris longus i.e. double Palmaris longus was identified in the right forearm of 50 yrs male cadaver during the routine dissection. Duplication of Palmaris longus may cause the compression of median nerve (i. e. carpal tunnel syndrome) or ulnar nerve compression. Although palmaris longus is considered as ancillary forearm muscle its tendon is frequently harvested and used in the surgical repair of other structures. Therefore knowledge of anatomical variations of Palmaris longus is important to surgeon as well as anatomist.