Posterior Interosseous Nerve(PIN) Syndrome Caused by Anomalous Vascular Leash

Posterior interosseous nerve(PIN) syndrome is an entrapment of the deep branch of the radial nerve just distal to the elbow joint. It is caused by acute trauma or masses compressing the nerve. We report an unusual case of PIN syndrome with wrist drop caused by compression of the nerve by anomalous vascular leash. The patient has recovered with the surgical decompression of the offending vessels and arcade of Frohse.

Posterior Interosseous Nerve Syndrome: Case of Report

The authors reported the one case of posterior interosseous nerve syndrome, which had been operated and shown the good result. The posterior interosseous nerve syndrome is a neuropathy of deep musclar branch of the radial nerve. This nerve can be compressed by tumors, ganglia, elbow synovitis, or by a spontaneous compression that may occur at the point of passage through the 'arcade of Frohse'. This case had shown the vascular leash constricting the posterior interosseous nerve justproximal to the arcadet of Frohse, and the nerve below the constriction was atrophied. We reviewed other cases from the iterature in view of clinical features and management.