Published in:
Open Access
01-10-2020 | Anatomic Variations
A three-headed plantaris muscle: evidence that the plantaris is not a vestigial muscle?
Authors:
Łukasz Olewnik, N. Zielinska, P. Karauda, R. Shane Tubbs, M. Polguj
Published in:
Surgical and Radiologic Anatomy
|
Issue 10/2020
Login to get access
Abstract
The plantaris is a small muscle that typically originates at the lateral supracondylar line of the femur and the knee joint capsule, from where it continues distally, forming a long and slender tendon. However, considerable controversy surrounds the status of this seemingly inconspicuous muscle: is it a residual muscle, or one that it is just developing? In addition, both the proximal and distal attachments are highly morphologically variable. These variations can lead to many diseases. Interestingly, the course of the PM tendon is also variable. The present case study presents a new description of a complex origin type and a rare course of the PM tendon. Understanding of the PM and its tendon has clear clinical value and is a significant indicator of the development of interest in this overlooked muscle.