Surgery of the extremities has a definite role in the comprehensive treatment program for the child with cerebral palsy. It is reserved for those contractures that can be effectively released, those deformities which other measures have failed to bring to correction, and those conditions in which surgery is a prerequisite for subsequent treatment. Such surgery is recommended for the truly spastic group. In the athetoid group, on the other hand, surgery is limited to arthrodesis of joints in selected patients. Analysis of 200 operations, performed on 95 selected patients during the period 1948 to 1958, showed that most gratifying results were obtained in improving muscle function and skill, in eliminating crutch support and bracing, and in facilitating or shortening the treatment program.