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Case Reports in Medicine
Volume 2010 (2010), Article ID 785202, 3 pages
Case Report

Posterior Interosseous Nerve Palsy Caused by Parosteal Lipoma: A Case Report

1Royal Derby Hospital, Uttoxeter Road, Derby DE22 3NE, UK
2Glan Clwyd Hospital, Rhyl LL18 5UJ, UK

Received 5 January 2010; Revised 23 June 2010; Accepted 18 July 2010

Academic Editor: Matthew B. Dobbs

Copyright © 2010 Hatem Salama et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An 83-year-old woman presented with weakness in her right-hand and wrist extensors and swelling in the proximal part of the right forearm. Electromyography (EMG) confirmed involvement of posterior interosseous nerve at the level of proximal forearm. MR imaging demonstrated the characteristics of lipoma which extended on the anterolateral aspect of the right forearm and at the level of the radius neck. The lesion was parosteal lipoma causing compression and paralysis of the posterior interosseous nerve without sensory deficit. In this paper, posterior interosseous nerve palsy due to compression of a parosteal lipoma recovered after excision of the lipoma followed by intensive rehabilitation for six month. Surgical excision should be performed to ensure optimal recovery from the nerve paralysis.