Surgery for Cerebral Palsy: Part 1. Classification and Operative Procedures for Pronation Deformity

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Abstract
32 patients with cerebral palsy underwent operations for pronation deformity. The deformity is classified into four groups. Patients in group 1 are capable of supination beyond neutral. No surgery is necessary. Those in group 2 are able to supinate to the neutral position. A pronator quadratus release is advised and may be combined with a flexor aponeurotic release. In group 3, patients have no active supination. However a full range of passive supination is readily achieved. A pronator teres transfer is advised. Patients in group 4 have no active supination. Full passive supination may be present, but is tight. A flexor aponeurotic release and a pronator quadratus release may unmask active supinator activity. An active transfer for supination is possible as a secondary procedure.

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