Sartorius
Musculus sartorius
MuscularSuperficial musclesWhole bodyLeft and right
View left in 3D View right in 3D
- What it is
- The longest muscle in the body: a narrow strap that spirals across the front of the thigh from the anterior superior iliac spine, down the inner side of the knee, to the upper medial surface of the tibia (pes anserinus).
- Function
- Flexes, abducts and laterally rotates the hip and flexes the knee - together producing the cross-legged "tailor's" position (sartor = tailor).
- Size
- About 50 cm long, 4 cm wide and 1 cm thick.
- Clinical note
- Forms the lateral border of the femoral triangle and the roof of the adductor canal; the ASIS origin can be avulsed in adolescent sprinters.