Quadratus Femoris KWAdratus feMORus

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).

Quadratus Femoris

Piriformis & Quadratus Femoris

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  • Martin Fenstermacher
    How important is quadratus femoris?
    8 years ago
  • battista pisano
    What is synergist to piriformis?
    8 years ago

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