Article: A GUIDE TO SURGEON IN HAND RECONSTRUCTIVE SURGERIES WITH THE KNOWLEDGE OF REVERSED PALMARIS LONGUS MUSCLE

Article Category: Original Research articles

DOI: 10.7897/2277-4343.166214

Pages: 58-61

Author: Dipti G Godbole *, Ankitha Krishna, Gururaj Jahagirdar

Abstract: Palmaris longus is one such fusiform muscle present in the flexor compartment of forearm. The muscle is frequently absent in most of the population. It has an origin from the common flexor origin [medial epicondyle of humerus] and insertion into the flexor retinaculum of the wrist. The tendon of Palmaris longus was proximal while the belly of the muscle was distal. Aim: The aim of this study is to document the incidence of variation, morphological features, and clinical implications of Palmaris longus muscle through the cadaveric dissection thereby contributing to a better understanding of it. Methods: During the routine BAMS-UG dissection in the Department of Shareera Rachana at Sri Dharmasthala Manjunatheshwara Institute of Ayurveda and Hospital, Bengaluru, a variation was found in the attachment of Palmaris longus Muscle in a 55-year-old female cadaver. Dissection of the Palmaris longus muscle was done as per the dissection manual to look for any anatomical variations, the findings were compared with previous literature. Results: It was found as a Reversal of the Palmaris longus muscle in the right forearm, which means the tendon has proximal attachment to the medial epicondyle of humerus while the insertion of muscle belly is into the palmar aponeurosis. Discussion: The variation in the attachment of Palmaris longus muscle is clearly understood by phylogenetic regression as per various studies sourced from different journal articles. Conclusion: The awareness of Palmaris longus muscle variations becomes important for a physician, surgeon and a radiographer in the fields of clinical practice, surgery, and radiography.

Keyword: Palmaris longus, flexor retinaculum, common flexor origin, Palmar aponeurosis, tendon graft, Reversal, Agenesis, Carpal tunnel.