Posterior interosseous palsy after dental treatment: case report.

Unilateral posterior interosseous nerve palsy occurred in a woman after deep palpation by her dentist during treatment for temporomandibular joint (TMJ) syndrome. Weakness of wrist and finger extension was noticed by the patient after the dentist used techniques of "applied kinesiology," including "pressure-point palpation." Electromyography confirmed the localization. This case exemplifies nerve damage caused by unorthodox treatment directed at the musculoskeletal system.