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Quadratus Femoris – Functional Anatomy

Here, you will find the anatomy of the quadrants femoris muscles. Also, you will find functional considerations and all of the related posts in this blog.

Overview

Quadratus femoris is one of the deep lateral hip rotators. It is a flat, rectangular muscle posterior to the hip joint.

Origin

  • lateral border of the ischial tuberosity

Insertion

  • posterior crest of the greater trochanter

Function

  • external rotation of the hip joint
  • adduction of the hip joint
  • stabilize the hip joint

Nerve

  • small section off the sacral plexus – (L4-S1)

Functional Considerations

Quadratus femoris is separated from the hip joint by the tendon of the obturator externus.

Depending on the position of the femur, the quadratus femoris may assist in abduction or adduction of the hip joint.

Quadratus femoris can be a contributor factor in ischial-femoral impingement.

Anomalies, Etc.

Occasionally, the posterior edge of the quadratus femoris fuses with the superior border of the adductor magnus.

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