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Prevalance of agenesis of palmaris longus muscle in gujarat population

Authors:Mehul Tandel, Daxa Kanjiya, Lajja Sutaria, Brijesh Patel, Viras Patel, C. A. Pensi
Int J Biol Med Res. 2012; 3(4): 2597-2602  |  PDF File

Abstract

Background: Palmaris longus muscle is one of the superficial slender muscles of forearm that act on the skin and distal digital webs. It has been described as a phylogenetically degenerate metacarpophalangeal joint flexor. It is harvested as a tendon graft in many surgical procedures. Palmaris longus muscle is a choice of muscle in cosmetic, plastic and reconstructive surgery. There are many studies on various ethnic groups of different regions. Aim: This prospective, observational and cross sectional study was conducted to determine the prevalence of unilateral and bilateral agenesis of Palmaris Longus and its association with sex and side of the limb in the Gujarat population of India. Materials and Methods: The clinical study was conducted on 474 subjects (273 males and 201 females) belonging to 18 – 25 years for agenesis of palmaris longus by various clinical techniques and the cadaveric study was conducted on 50 upper limbs of 25 cadavers of Gujarat region. Data was collected and analyzed by Chi-square test. Results: In clinical study total agenesis of palmaris longus muscle was seen in 67(13.08%) subjects out of whom 13.19% were males and 12.94% were females. Unilateral agenesis was seen in 38.71%, bilateral agenesis in 61.29%, right sided agenesis in 45.83% and left sided in 54.17%. In cadavers out of 50 upper limbs, Palmaris longus agenesis was seen in total 4 limbs in which 1 limb had bilateral agenesis and 2 left limbs had unilateral agenesis. Conclusions: Prevalence of palmaris longus agenesis is more common in males and unilateral agenesis is more common on left side.