Nerve to quadratus femoris
The nerve to quadratus femoris is a nerve that provides innervation to the quadratus femoris muscle and gemellus inferior muscle.
| Nerve to quadratus femoris | |
|---|---|
 Plan of sacral plexus and pudendal plexus. | |
| Details | |
| From | sacral plexus (L4,L5,S1) |
| Innervates | Quadratus femoris muscle, Inferior gemellus muscle |
| Identifiers | |
| Latin | Nervus musculi quadrati femoris |
| TA98 | A14.2.07.030 |
| TA2 | 6551 |
| FMA | 78705 |
| Anatomical terms of neuroanatomy | |
Structure
The nerve to quadratus femoris is a sacral plexus nerve.[1][2] It arises from the ventral divisions of the fourth lumbar spinal nerve, fifth lumbar spinal nerve, and first sacral spinal nerve.[1] It leaves the pelvis through the greater sciatic foramen, below piriformis muscle.[2] It runs down in front of the sciatic nerve, the superior and inferior gemellus muscles, and the tendon of the obturator internus.[2] It enters the anterior surfaces of quadratus femoris muscle and gemellus inferior muscle. It gives an articular branch to the hip joint.[1][2]
Variation
Rarely, the nerve to quadratus femoris may also innervate the gemellus superior muscle, or the upper part of adductor magnus muscle.[2]
Function
The nerve to quadratus femoris provides motor innervation to quadratus femoris muscle and inferior gemellus muscle.[1][2] It also provides sensory innervation to the hip joint.[1][2]
References
This article incorporates text in the public domain from page 957 of the 20th edition of Gray's Anatomy (1918)
- Mehta, Karishma; Tubbs, Shane (2021). "Chapter 8 - The Nerve to Quadratus Femoris". Surgical Anatomy of the Sacral Plexus and Its Branches. Elsevier. pp. 35–39. doi:10.1016/B978-0-323-77602-8.00008-8. ISBN 978-0-323-77602-8. S2CID 225034406.
- Apaydin, Nihal (2015). "Chapter 47 - Variations of the Lumbar and Sacral Plexuses and Their Branches". Nerves and Nerve Injuries. Vol. 1: History, Embryology, Anatomy, Imaging, and Diagnostics. Academic Press. pp. 627–645. doi:10.1016/B978-0-12-410390-0.00049-4. ISBN 978-0-12-410390-0.