Nerve to quadratus femoris
- 1 min read
- 2 chapters
Related on Lably
Structure
Origin
The nerve to quadratus femoris is a branch of the sacral plexus. It arises from the anterior divisions of the spinal nerves L4-S1.
Course
It exits the pelvis through the greater sciatic foramen inferior to the piriformis muscle.
It passes inferior-ward upon the ischium deep to the sciatic nerve, the superior and inferior gemellus muscles, and the tendon of the obturator internus. It traverses the posterior aspect of the hip joint, here issuing an articular (sensory) branch to the joint. It proceeds inferior-ward deep to the superior and inferior gemelli muscles and the obturator internus muscle.
It enters the anterior surfaces of quadratus femoris muscle and gemellus inferior muscle.
Variation
Rarely, the nerve to quadratus femoris may also innervate the gemellus superior muscle, or the upper part of adductor magnus muscle.
Sign in to keep reading
One more chapter is free with a Lably account.
Function
The nerve to quadratus femoris provides motor innervation to quadratus femoris muscle and inferior gemellus muscle. It also provides sensory innervation to the hip joint.