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FRACTURES AT THE BASE OF THE FIRST METACARPAL BONE



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Abstract

1. A large proportion of fractures were poorly reduced in this series either because the method used was inadequate or because it was inexpertly applied. At first it was thought that immobilisation in plaster gave adequate fixation but it was impossible to be certain that the reduction was not sometimes lost in the interval between manipulation and the check radiograph taken immediately after plaster had been applied. This suggested that in some cases fixation might be lost early although late redisplacement was not seen.

2. The late subjective results in patients with unreduced fractures were good, but there was some loss of thumb mobility partly due to varus deformity of the metacarpal bone and partly due to incomplete compensation for generalised stiffness in and around the joint.

3. Since loss of movement caused little disability and joint involvement rarely produced symptoms due to osteoarthritis, it seems doubtful whether the use of complex methods of treatment is justifiable.

4. Women seem to be predisposed to painful symptoms at the carpo-metacarpal joint of the thumb whether they occur after fracture or in association with non-traumatic osteoarthritis of the joint.

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