DOI: 10.36347/sjams.2021.v09i04.005

Pages: 521-523

Interosseous nerve syndrome is a compressive entrapment of the deep motor branch of the radial nerve in the radial tunnel. These attacks of the radial nerve constitute a rather rare but particularly interesting variety of radial palsy. We report the case of a 39-year-old woman who presented with right posterior interosseous nerve syndrome. The diagnosis was made on clinical grounds in particular the low radial palsy which was clear and without muscle atrophy. Electromyography con fi rmed the diagnosis objectifying the presence of a conduction block in the motor branch of the radial nerve. Surgical exploration revealed compression of the motor branch of the radial nerve in the arch of FROHSE. Internal neurolysis of the radial nerve was performed. Full recovery was obtained after three months.