The treatment of longitudinal ulnar deficiency

Longitudinal ulnar deficiency, whose detailed anatomy is varied, is often accompanied by other abnormalities and appears as part of several syndromes. The history of its classification is reviewed, and the treatments, which have been offered, described. Follow-up of a series shows that the function achieved is good and is optimised by aids, occupational therapy and some hand surgical procedures. The more elaborate surgical reconstructions are unlikely to be beneficial.