Nerve to Quadratus Femoris

Description

A) Illustration of the lumbosacral plexus and the peripheral nerves relevant to the pelvic region; B) Sclerotomal distribution in the female; C) Sclerotomal distribution in the male

Name

• Nerve to Quadratus Femoris
• Quadratus Femoris Nerve

General

• Nerve of the sacral plexus that innervates quadratus femoris, inferior gemellus
• Also acts as an articular branch to the hip joint

Gross Anatomy

• Arises from anterior divisions of sacral plexus, L4-S1 nerve roots
• Exits the pelvis through the greater sciatic foramen, inferior to piriformis and deep to sciatic nerve
• Lies anterior to the plane of the deep muscles of the gluteal region (unlike other nerves here)
• Descends along the ischium, passes posterior to the hip joint, where it sends an articular branch
• At this position, lies deep to obturator internus
• Continues to descend inferiorly to the quadratus femoris, inferior gemellus

Muscles Innervated

• Quadratus Femoris
• Inferior Gemellus
• Rarely, upper part of Adductor Magnus

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Clinical Significance

• Needs to be updated

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See Also

• Hip Pain Main
• Physical Exam Hip
• Nerve Anatomy Main

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