WordNet

located at or near or behind a part or near the end of a structure

PrepTutorEJDIC

《名詞の前にのみ用いて》(生物学的に,位置が)後ろの,後部の / (時間・順序が)後の;(…より)後の《+『to』+『名』》(later) / しり(buttocks)

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/06/30 07:16:58」(JST)

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The posterior cutaneous nerve of the thigh (also called the posterior femoral cutaneous nerve) provides innervation to the skin of the posterior surface of the thigh and leg, as well as to the skin of the perineum.

Structure

The posterior cutaneous nerve of the thigh is a nerve from the sacral plexus. It arises partly from the dorsal divisions of the first and second, and from the ventral divisions of the second and third sacral nerves, and issues from the pelvis through the greater sciatic foramen below the piriformis muscle.

It then descends beneath the gluteus maximus with the inferior gluteal artery, and runs down the back of the thigh beneath the fascia lata, and over the long head of the biceps femoris to the back of the knee; here it pierces the deep fascia and accompanies the small saphenous vein to about the middle of the back of the leg, its terminal twigs communicating with the sural nerve.

Branches

Its branches are all cutaneous, and are distributed to the gluteal region, the perineum, and the back of the thigh and leg.

The inferior clunial nerves (or gluteal branches), three or four in number, turn upward around the lower border of the gluteus maximus, and supply the skin covering the lower and lateral part of that muscle.
The perineal branches are distributed to the skin at the upper and medial side of the thigh.
The main part to the back of the thigh and leg consists of numerous filaments derived from both sides of the nerve, and distributed to the skin covering the back and medial side of the thigh, the popliteal fossa, and the upper part of the back of the leg.

Additional images

Cutaneous nerves of the right lower extremity. Front and posterior views.
Cutaneous nerves of the right lower extremity. Front and posterior views.
Schematic of sacral plexus. Posterior cutaneous nerve of thigh is labeled at the bottom.

References

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

External links

Posterior_femoral_cutaneous_nerve at the Duke University Health System's Orthopedics program

UpToDate Contents

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English Journal

Anatomical variations of lumbosacral plexus.

Matejcík V1.
Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2010 Apr;32(4):409-14. doi: 10.1007/s00276-009-0546-3. Epub 2009 Aug 21.
BASIS: Deviations detected during spinal operations have motivated us to start research related to variations of lumbosacral plexus formation. Aim of this work was to find out deviations of its formation from ascension of particular roots from foramen invertebrale and foramina sacralia up to formati
PMID 19696958

Nervus cutaneus femoris posterior pedicle flap for repairing large soft tissue defects at the heel or inferior segment of the shank.

Wang RY1, Hu JZ, Xin LW, Tang JC, Gao Y.
Chinese journal of traumatology = Zhonghua chuang shang za zhi / Chinese Medical Association.Chin J Traumatol.2009 Oct;12(5):275-8.
OBJECTIVE: To investigate the clinical effect of the nervus cutaneus femoris posterior pedicle flap on repairing large soft tissue defects at the heel or inferior segment of the shank.METHODS: Totally 14 cases were followed up for 8-22 months (mean 15.5 months) to observe the clinical effects of ner
PMID 19788844

Related Pictures

N cutaneus femoris — der nervus cutaneus femoris lateralis ist ein rein sensibler Cutaneous Nerve Blocks of the Lower Extremity - NYSORA Nervus cutaneus femoris posterior - Verlauf und Funktion | Kenhub Posterior cutaneous nerve of the forearm (Nervus cutaneus antebrachii posterior) | Kenhub

★リンクテーブル★

リンク元	「後大腿皮神経」
関連記事	「posterior」「nervus」「femor」「femoris」

「後大腿皮神経」

Posterior cutaneous nerve of thigh
	Cross-section through the middle of the thigh. (Posterior femoral cutaneous nerve labeled at bottom.)
	Nerves of the right lower extremity. Posterior view. (Post. fem. cutaneus labeled at upper left.)
Details
From	sacral plexus (S1,S2,S3)
To	inferior clunial nerves, perineal branches
Identifiers
Latin	nervus cutaneus femoris posterior
Dorlands; /Elsevier	n_05/12565565
TA	A14.2.07.033
FMA	45337
	Anatomical terms of neuroanatomy [edit on Wikidata]