Clawhand deformity presumed secondary to Parkinson's disease.

A clawhand deformity presumed to be secondary to Parkinson's disease is described. No such association was found previously recorded in the literature. The marked limitation in hand function was improved by lengthening the extensor tendons, a 4-tail superficialis transfer to the intrinsic muscles, and capsulotomy of the metacarpophalangeal joints of the index and long fingers.