Abstract
WEAKNESS of the muscles innervated by the posterior interosseous nerve in patients with no history of trauma to the upper extremity is a rare clinical entity. This weakness can result from entrapment of the nerve by tumor, inflammation, or anatomic anomaly. If suspect, the diagnosis of nerve entrapment can be made clinically and proved with electromyography. Early diagnosis often allows successful surgical treatment. Functional Anatomy The posterior interosseous nerve or deep radial nerve (Fig 1) is the larger terminal division of the radial nerve. 1 Descending across the elbow under cover of the brachioradialis and extensor carpi radialis longus muscles, it supplies the extensor carpi radialis brevis and supinator muscles before reaching the proximal border of the latter. Entering the supinator, the deep radial nerve winds around the lateral side of the radius in the substance of the muscle. It passes through the muscle lengthwise between two thin
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.