Ulnar tunnel syndrome.
Ulnar tunnel syndrome or compression of the ulnar nerve at the wrist is of two distinct types. In the first type compression is at the level of the pisiform with involvement of both sensory and motor fibres. In the second type compression is distal to the pisiform with involvement of the motor fibres only.
D004576:Electromyography; D005500:Follow-Up Studies; D006801:Humans; D009408:Nerve Compression Syndromes / Q000175:diagnosis / Q000601:surgery*; D014459:Ulnar Nerve / Q000033:anatomy & histology / Q000601:surgery