The lateral terminal branch (external or tarsal branch) passes across the tarsus, beneath the extensor digitorum brevis, and, having become enlarged like the dorsal interosseous nerve at the ankle, supplies the extensor digitorum brevis.
From the enlargement three minute interosseous branches are given off, which supply the tarsal joints and the metatarsophalangeal joints of the second, third, and fourth toes.
The first of these sends a filament to the second interosseus dorsalis muscle.
It runs with the lateral tarsal artery.
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 As such, some of the information contained herein may be outdated.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.
|Nerves of lower limbs and lower torso: the lumbosacral plexus (L1-Co)|
|lumbar plexus (L1-L4)||iliohypogastric: lateral cutaneous branch - anterior cutaneous branch
ilioinguinal: anterior scrotal ♂/labial ♀
genitofemoral: femoral branch/lumboinguinal - genital branch
lateral cutaneous of thigh: patellar
obturator: anterior (cutaneous) - posterior - accessory
femoral: anterior cutaneous branches - saphenous (infrapatellar, medial crural cutaneous)
|sacral plexus (L4-S4)|
||common fibular: lateral sural cutaneous (sural communicating branch) - deep fibular (lateral terminal branch, medial terminal branch, dorsal digital) - superficial fibular (medial dorsal cutaneous, intermediate dorsal cutaneous, dorsal digital)
tibial: medial sural cutaneous - medial calcaneal - medial plantar (common plantar digital nerves, proper plantar digital) - lateral plantar (deep branch, superficial branch, common plantar digital, proper plantar digital)
sural: lateral dorsal cutaneous - lateral calcaneal
||muscular: superior gluteal/inferior gluteal - lateral rotator group (to quadratus femoris, to obturator internus, to the piriformis)
cutaneous: posterior cutaneous of thigh (inferior cluneal, perineal branches) - perforating cutaneous
|coccygeal plexus (S4-Co)||pudendal: inferior anal - perineal (deep, posterior scrotal ♂/labial ♀) - dorsal of the penis ♂/clitoris ♀|
|cutaneous innervation of the lower limbs|