Origin: Anterior surface of the lateral sacrum
Insertion: Greater trochanter of femur along upper medial surface
Action: Laterally rotates thigh at hip; abducts thigh if hip flexed
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| Piriformis Muscle |
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| Lateral surface (Piriformis muscle) |
Monday, 1 September 2014
Origin/Insertion of Muscles - Abductor Muscles - Piriformis
Piriformis
Origin: Anterior surface of the lateral sacrum
Insertion: Greater trochanter of femur along upper medial surface
Action: Laterally rotates thigh at hip; abducts thigh if hip flexed
Origin: Anterior surface of the lateral sacrum
Insertion: Greater trochanter of femur along upper medial surface
Action: Laterally rotates thigh at hip; abducts thigh if hip flexed
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