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Gluteus Maximus Origin
-Posterior ilium: sacrotuberous ligament & superior gluteal line
Gluteus Maximus Insertion
-Gluteal tuberosity of femur
-Via iliotibial tract to lateral condyle of tibia
Obturator Internus Origin
Internal (posterior) surface of obturator membrane and rim of obturator foramen
Obturator Externus Origin
External (anterior) surface of obturator membrane and rim of obturator foramen
Biceps Femoris Action
Both heads: Flexion of knee, external rotation of flexed knee
Long head: Extends hip
Biceps Femoris Nerve
Long head: Tibial division of sciatic nerve
Short head: Common peroneal division of sciatic nerve
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