Human Movement Science & Functional Anatomy of the:


by Brent Brookbush MS, PES, CES, CSCS, ACSM H/FS


Sartorius Muscle and the Femoral Triangle


What's in a name:

  • Sartorius - originating from the latin root "sartor" meaning "tailor".  Although there may are several stories describing the origin of this word I prefer the story that describes the position assumed by tailor's with one ankle over opposite knee - This position is attained by the same combination of joint actions the sartorius is capable of.
  • An interesting fact: The sartorius is the longest muscle in the human body.

Pes Anserinus Tendon - Netter Anatomy Atlas -


  • Origin: Anterosuperior iliac spine, superior half of the notch just distal to the spine, an lateral portion of the inguinal ligament (3, 11).
  • Insertion:  Proximal part of the medial surface of the tibia near the anterior border, making up the most medial fibers of the pes anserinus tendon, passing over the pes anserinus bursa (11).

    • The sartorius is covered by the anterior fascia lata, and although it is considered to exist within the anterior compartment (between medial and lateral intermuscular septa), this muscle is nearly enveloped by the anterior fascia lata in it's own compartment.  There are no structures that lie anterior to this muscle, but posteriorly the