Studies on ulnar nerve compression neuropathies with a new computerised instrument--the intrins-o-meter.

From 1900-1995, 48 patients with ulnar nerve compression neuropathies were studied. Pinching grip, palmar adduction of the thumb, radical abduction of the index finger, and ulnar abduction of the little finger, were measured before and after operation with the new computerised intrins-o-meter. The data were processed, assessed statistically, and printed out. From the results of the four parameters mentioned above, a special Ulnar Nerve Function Profile (UNFP) was constructed. The series was subdivided in three groups A, B, C of which group A (n = 30) comprised pure ulnar nerve compression neuropathies. The results were categorized by analysing the Ulnar Nerve Function Profile, assessing the academical and functional recovery, and recording the presence or absence of Wartenberg's and Froment's signs before and after operation.