This is the most distal of the external rotators. It is a quadrangular-shaped muscle originating from above the ischial tuberosity and inserting on the greater trochanter of the proximal femur. It is a synergist to the piriformis in external rotation of the femur. It is also an adductor of the femur and opposes the piriformis' capacity to abduct. Combined contraction ofthe two muscles externally rotates thethigh.
Tightness in the quadratus femoris limits internal rotation ofthe femur in certain seated twists and twisted standing poses. Contraction accentuates the effect of other seated twists and non-twisted standing poses. Awakening the piriformis and quadratus femoris muscles brings awareness to the neighboring gamelli and obturators (the other external rotators ofthe hip).
Piriformis & Quadratus Femoris
Was this article helpful?