Bipartite hamulus associated with carpal tunnel syndrome - A case report.:A Case Report

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Many reports of the fractures of the hooks of hamate have provided a sharp focus on causes, dignosis, treatment and associated anomalies such as ulnar neuropathy, bipartition and accessory ossicles.But there is no report about bipartite hamulus with carpal tunnel syndrome.This case report, presenting carpal tunnel syndrome with bipartite hamulus, illustrates the relation between carpal tunnel syndrome and this anomaly.A case of bipartite hamulus associated with carpal tunnel syndrome was reported. A 51-year-old man, who had had the fracture of the distal end of the radius and treated by cast fixation, found the sensory disturbance of the median nerve area in hand and muscle weakness of the thumb after one month of the injury. Radiological, computer tomographic and operative findings revealed that he had had the narrowed carpal tunnel caused from the radially deviated hook of the hamate. After 3 months of dissection of the transverse carpal ligament and removal of the hamulus, his median nerve palsy disappeared completely.It was concluded that carpal tunnel syndrome occurred due to trauma of the wrist in the situation of the narrowing of carpal tunnel which was based on the bipartite hamulus.
西日本整形・災害外科学会の論文