Stenosing tenosynovitis of the extensor carpi ulnaris.

Stenosing tenosynovitis of the extensor carpi ulnaris, to our knowledge, has not been previously reported. This condition, although uncommon, should be considered in the differential diagnosis of pain over the dorsoulnar aspect of the wrist. We report three cases with good response to surgical decompression of the sixth dorsal compartment of the wrist.