Posterior cutaneous nerve of forearm
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| Nerve: Posterior cutaneous nerve of forearm | |
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| Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Posterior view. ("Dors. antibrach. cutan." visible in red at center.) | |
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| Diagram of segmental distribution of the cutaneous nerves of the right upper extremity. Anterior view. ("Dors. antibrach. cutan." visible in red at center.) | |
| Latin | n. cutaneus antebrachii posterior, n. cutaneus antibrachii dorsalis |
| Gray's | subject #210 944 |
| From | radial nerve |
| Dorlands / Elsevier | n_05/12565472 |
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The dorsal antibrachial cutaneous nerve (external cutaneous branch of musculospiral, posterior antebrachial cutaneous nerve, posterior cutaneous nerve of forearm) is a cutaneous nerve of the forearm.
Course
It perforates the lateral head of the Triceps brachii at its attachment to the humerus.
The upper and smaller branch of the nerve passes to the front of the elbow, lying close to the cephalic vein, and supplies the skin of the lower half of the arm.
The lower branch pierces the deep fascia below the insertion of the Deltoideus, and descends along the lateral side of the arm and elbow, and then along the back of the forearm to the wrist, supplying the skin in its course, and joining, near its termination, with the dorsal branch of the lateral antibrachial cutaneous nerve.
See also
- Medial antibrachial cutaneous nerve
- Lateral antibrachial cutaneous nerve
- Posterior brachial cutaneous nerve
Additional images
 Cross-section through the middle of upper arm. |
 Cutaneous nerves of right upper extremity. Anterior view. |
 Cutaneous nerves of right upper extremity. Posterior view. |
External links
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 As such, some of the information contained herein may be outdated.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 upper limbs (primarily): the brachial plexus (C5-T1) | |
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| Supraclavicular | root (dorsal scapular, long thoracic) - upper trunk (suprascapular, to the subclavius) |
| Infraclavicular: lateral cord | lateral pectoral
musculocutaneous (lateral cutaneous of forearm) median/lateral root: anterior interosseous - palmar - recurrent - common palmar digital (proper palmar digital) |
| Infraclavicular: medial cord | medial pectoral
cutaneous: medial cutaneous of forearm • medial cutaneous of arm ulnar: muscular - palmar - dorsal (dorsal digital nerves) - superficial (common palmar digital, proper palmar digital) - deep median/medial root: see above |
| Infraclavicular: posterior cord | subscapular (upper, lower) • thoracodorsal
axillary (superior lateral cutaneous of arm) radial: muscular - cutaneous (posterior of arm, inferior lateral of arm, posterior of forearm) - superficial (dorsal digital nerves) - deep (posterior interosseous) |
| Other | cutaneous innervation of the upper limbs |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
