The lateral cutaneous nerve of forearm (or lateral antebrachial cutaneous nerve) is a sensory nerve representing the continuation of the musculocutaneous nerve beyond the lateral edge of the tendon of the biceps brachii muscle. The lateral cutaneous nerve provides sensory innervation to the skin of the lateral forearm. It pierces the deep fascia of forearm to enter the subcutaneous compartment before splitting into a volar branch and a dorsal branch.[1]
Lateral cutaneous nerve of forearm
Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Anterior view. ("Lat. antebrach. cutan." visible in purple.)
The volar branch (ramus volaris; anterior branch) descends along the radial border of the forearm to the wrist, and supplies the skin over the lateral half of its volar surface.
At the wrist-joint it is placed in front of the radial artery, and some filaments, piercing the deep fascia, accompany that vessel to the dorsal surface of the carpus.
The nerve then passes downward to the ball of the thumb, where it ends in cutaneous filaments.
It communicates with the superficial branch of the radial nerve, and with the palmar cutaneous branch of the median nerve.
Dorsal branchedit
The dorsal branch (ramus dorsalis; posterior branch) descends, along the dorsal surface of the radial side of the forearm to the wrist.
It supplies the skin of the lower two-thirds of the dorso-lateral surface of the forearm, communicating with the superficial branch of the radial nerve and the posterior cutaneous nerve of forearm of the radial nerve.
lesson2superficveinsupperlimb at The Anatomy Lesson by Wesley Norman (Georgetown University), lesson5nervesofpostforearm at The Anatomy Lesson by Wesley Norman (Georgetown University)
EatonHand ner-097
Anatomy figure: 06:03-08 at Human Anatomy Online, SUNY Downstate Medical Center - "Cutaneous nerves of the upper extremity."
Hand kinesiology at the University of Kansas Medical Center
lateral, cutaneous, nerve, forearm, this, article, includes, list, general, references, lacks, sufficient, corresponding, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, june, 2015, learn, when, remove, this, tem. This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations June 2015 Learn how and when to remove this template message The lateral cutaneous nerve of forearm or lateral antebrachial cutaneous nerve is a sensory nerve representing the continuation of the musculocutaneous nerve beyond the lateral edge of the tendon of the biceps brachii muscle The lateral cutaneous nerve provides sensory innervation to the skin of the lateral forearm It pierces the deep fascia of forearm to enter the subcutaneous compartment before splitting into a volar branch and a dorsal branch 1 Lateral cutaneous nerve of forearmDiagram of segmental distribution of the cutaneous nerves of the right upper extremity Anterior view Lat antebrach cutan visible in purple DetailsFromMusculocutaneous nerveIdentifiersLatinnervus cutaneus antebrachii lateralisTA98A14 2 03 026TA26423FMA39080Anatomical terms of neuroanatomy edit on Wikidata Contents 1 Anatomy 1 1 Course and relations 1 2 Branches 1 2 1 Volar branch 1 2 2 Dorsal branch 2 See also 3 Additional images 4 References 5 External linksAnatomy editCourse and relations edit It passes behind the cephalic vein and divides opposite the elbow joint into a volar branch and a dorsal branch Branches edit Volar branch edit The volar branch ramus volaris anterior branch descends along the radial border of the forearm to the wrist and supplies the skin over the lateral half of its volar surface At the wrist joint it is placed in front of the radial artery and some filaments piercing the deep fascia accompany that vessel to the dorsal surface of the carpus The nerve then passes downward to the ball of the thumb where it ends in cutaneous filaments It communicates with the superficial branch of the radial nerve and with the palmar cutaneous branch of the median nerve Dorsal branch edit The dorsal branch ramus dorsalis posterior branch descends along the dorsal surface of the radial side of the forearm to the wrist It supplies the skin of the lower two thirds of the dorso lateral surface of the forearm communicating with the superficial branch of the radial nerve and the posterior cutaneous nerve of forearm of the radial nerve See also editMedial cutaneous nerve of forearm Superior lateral cutaneous nerve of armAdditional images edit nbsp Cross section through the middle of upper arm nbsp Cross section through the middle of the forearm References edit Desai Sohil S Arbor Tafline C Varacallo Matthew 2022 Anatomy Shoulder and Upper Limb Musculocutaneous Nerve StatPearls Treasure Island FL StatPearls Publishing PMID 30480938 retrieved 2023 01 13 nbsp This article incorporates text in the public domain from page 936 of the 20th edition of Gray s Anatomy 1918 External links editLateral antebrachial cutaneous nerve at the Duke University Health System s Orthopedics program lesson2superficveinsupperlimb at The Anatomy Lesson by Wesley Norman Georgetown University lesson5nervesofpostforearm at The Anatomy Lesson by Wesley Norman Georgetown University EatonHand ner 097 Anatomy figure 06 03 08 at Human Anatomy Online SUNY Downstate Medical Center Cutaneous nerves of the upper extremity Hand kinesiology at the University of Kansas Medical Center Portal nbsp Anatomy Retrieved from https en wikipedia org w index php title Lateral cutaneous nerve of forearm amp oldid 1209831686, wikipedia, wiki, book, books, library,
