[Wartenberg syndrome, caused by a split tendon of the brachioradialis muscle. A report of a rare anatomic variation].

We report a case of radial sensory nerve entrapment caused by a variation of the brachioradialis tendon. The nerve passed through the split tendon and gliding was hindered at this level. After resection of the supernumerary dorsal part of the tendon, relief of pain could be achieved in the 40-year-old patient.