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Superior gluteal nerve

Superior gluteal nerve
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Nerves of the right lower extremity. Posterior view.
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Plan of sacral and pudendal plexuses. (Superior gluteal labeled at upper left.)
Details
Latin nervus gluteus superior
From
sacral plexus (L4-S1)
Innervates gluteus medius, gluteus minimus, tensor fasciæ latæ
Identifiers
Gray's p.959
Dorlands
/Elsevier
n_05/12565861
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Anatomical terms of neuroanatomy

The superior gluteal nerve is a nerve that originates in the pelvis and supplies the gluteus medius, the gluteus minimus, and the tensor fasciae latae muscles.[1]

Structure

The superior gluteal nerve originates in the sacral plexus. It arises from the dorsal divisions of the L4, L5 and S1.[2] It leaves the pelvis through the greater sciatic foramen above the piriformis, accompanied by the superior gluteal artery and the superior gluteal vein.[3] It then accompanies the upper branch of the deep division of the superior gluteal artery and ends in the gluteus minimus and tensor fasciae latae muscle.

Pathology

In normal gait, the small gluteal muscles on the stance side can stabilize the pelvis in the coronal plane. Weakness or paralysis of these muscles caused by a damaged superior gluteal nerve can result in a weak abduction in the affected hip joint. This gait disturbance is known as Trendelenburg gait. In a positive Trendelenburg's sign the pelvis sags toward the normal unsupported side (the swing leg). The opposite, when the pelvis is elevated on the swing side, is known as Duchenne limp. Bilateral loss of the small gluteal muscles results in a waddling gait. [3]

See also

Notes

  1. ^ Platzer (2004), p 420
  2. ^ Gray's Anatomy for Students Drake et al.
  3. ^ a b Thieme Atlas of Anatomy (2006), p 476

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

  • Platzer, Werner (2004). Color Atlas of Human Anatomy, Vol. 1: Locomotor System (5th ed.). Thieme. ISBN 3-13-533305-1. 
  • Thieme Atlas of Anatomy: General Anatomy and Musculoskeletal System. Thieme. 2006. ISBN 1-58890-419-9. 

External links

pl:Nerw sromowy


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