Preliminary soft tissue distraction using external fixator in radial club hand.

Preliminary soft tissue distraction using an external fixator before centralisation and tendon transfer of the flexor and extensor carpi ulnaris to the little finger metacarpal was used to treat Bayne's type III and IV deformities in 18 hands of 14 patients with radial club hands. Treatment with external fixator was started at a mean age of 8 (range 3-30) months. In 16 of 18 hands, the surgical treatment was completed before 10 months of age. Adequate soft tissue stretching was achieved before centralisation using fractional distraction with the external fixator in the majority of hands. After an average follow-up period of 31 months, there were seven good, eight satisfactory and one unsatisfactory result.