An unexpected side effect: Wartenberg syndrome related to the use of splint during carpal tunnel syndrome treatment.

Isolated superficial radial neuropathy is a sensorial mononeuropathy and a rare clinical condition. In case of trapping of the sensorial branch of the radial nerve, symptoms such as burning type pain at proximal forearm and hand dorsoradial, hypoesthesia, numbness and tingling at hand dorsum and thumb radial side are observed. Muscular weakness and trophic changes are not seen, and electrophysiological assessment revealed normal motor nerve conduction values. Therefore, hand motor functions are not affected. The etiology of the isolated superficial radial nerve neuropathy is often associated with repeated use of wrist watches, forearm fractures, use of handcuffs, repetitive activities. In this report, we present a 59-year-old female case of isolated superficial radial nerve neuropathy diagnosed by electrophysiological evaluation who was treated for two months with carpal tunnel syndrome with altered symptoms and increased numbness. This is the first case of superficial radial nerve neuropathy following the splint use in the literature.