Variant branching and distribution pattern of the radial nerve and musculocutaneous nerve

Nayak, Satheesha B and Kumar, Naveen and George, Bincy M and Aithal, Ashwini P and Abhinitha, P and Prabhu, Gayathri (2016) Variant branching and distribution pattern of the radial nerve and musculocutaneous nerve. Brunei International Medical Journal, 12 (4). pp. 147-150. ISSN 1560-5876

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Knowledge of anatomical variation involving the superficial branch of the radial nerve will help in several clinical interventions such as nerve transfer procedures, guiding surgical incisions, diagnostic trauma reconstructive surgery, flap harvest and in performing nerve blocks etc. We report here a variant distribution pattern of the superficial branch of radial nerve and discuss the clinical implications. In the present case, in addition to sensory distribution, the superficial branch of radial nerve also provided motor innervation to extensor carpi radialis brevis and brachioradialis muscles. Further, the branch supplying the brachioradialis, pierced its tendon distally and communicated with the parent trunk to supply skin of dorsum of the hand. Because of the unusual motor distribution to these muscles, which act on wrist joint, an iatrogenic damage or traumatic injury of the nerve might jeopardize the sensori-motor qualities of the upper limb.

Item Type: Article
Uncontrolled Keywords: Radial nerve; externsor carpi radialis brevis; brachioradialis; superficial branch; musculocutaneous nerve; radial neuropathy.
Subjects: Medicine > MMMC Manipal > Anatomy
Depositing User: KMC Library
Date Deposited: 01 Feb 2017 08:40
Last Modified: 01 Feb 2017 08:40

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