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|Nerve: 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.)|
|Latin||nervus cutaneus femoris posterior|
|Gray's||subject #213 959|
|From||sacral plexus (S1-S3)|
|To||inferior clunial nerves, perineal branches|
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[edit | edit source]
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[edit | edit source]
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, 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[edit | edit source]
[edit | edit source]
- Duke Orthopedics posterior_femoral_cutaneous_nerve
- Dictionary at eMedicine posterior+cutaneous+nerve+of+thigh
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
lumbar plexus: iliohypogastric - ilioinguinal - genitofemoral (femoral branch/lumboinguinal, genital branch) - lateral cutaneous of thigh (patellar) - obturator (anterior, cutaneous, posterior, accessory) - femoral (anterior cutaneous branches, saphenous)
sacral/coccygeal plexus: to quadratus femoris - to obturator internus - to the piriformis - superior gluteal - inferior gluteal - posterior cutaneous of thigh (inferior cluneal, perineal branches)
sciatic: tibial (medial sural cutaneous, sural, medial calcaneal, medial plantar, lateral plantar) - common fibular (lateral sural cutaneous, deep fibular, superficial fibular, medial dorsal cutaneous, intermediate dorsal cutaneous)
- de:Nervus cutaneus femoris posterior
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