Internal Obturator

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Posterior Hip Muscles.png
Internal Obturator
Muscle Type
Origin Inner surface of obturator membrane and rim of pubis and ischium bordering membrane
Insertion Middle part of medial aspect of greater trochanter of femur
Action Abducts & externally rotates the extended hip and abducts the flexed thigh at the hip, and stabilises the hip during walking
Synergists
Antagonists
Spinal innervation
Peripheral Innervation
Vasculature Inferior gluteal artery