Variations in insertion of both heads of Gastrocnemius muscle in human cadaver
Haldar A, Tirpude A, Tirpude P
Gastrocnemius morphological status is often designated as being bipennate. Its robustness in humans is a feature that accompanies the evolution of human mode of bipedal locomotion. The superficial muscle group of posterior compartment of leg forms a powerful muscular mass in the calf. The two-headed gastrocnemius is the most superficial muscle of this group and forms the proximal, most prominent part of the calf. Gastrocnemius muscle exhibits numerous variations in the origin and insertion. During routine dissection of a 60 yr old cadaver in Department of Anatomy, ESI-PGIMSR, Joka, we found the incidental occurrence where both the heads of gastrocnemius muscle is right lower limb is not taking part in the formation of tendoachilis. No such variation was found on the right side. This study sheds light on the embryological and clinical implications of the variant gastrocnemius anatomy which will aid in assessment of gastrocnemius muscle for auto-grafting. The additional variant heads also bear evolutionary importance.