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Human Anatomy: Muscle Groups


Human Anatomy



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Muscle Function & Other Pertinent Medical Information
- PIRIFORMIS -
ORIGIN: 2, 3, 4 costotransverse bars of anterior sacrum, few fibers from superior border of greater sciatic notch
INSERTION: Anterior part of medial aspect of greater trochanter of femur
ACTION: laterally rotates and stabilizes hip
NERVE: Anterior primary rami of S1, 2






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