1. The operation is simple, as the bone for transplantation is usually available from associated operative procedures.
2. Apparatus may be discarded as a natural internal brace is constructed.
3. Muscle power is conserved by overcoming the constant force of gravity.
4. Prevention of overstretching may, of itself, permit a return of dormant muscle power.
5. Rocker motion of the ankle joint is conserved.
6. Stabilization is rendered more effective by the bone block and the incident additional fusion induced between the astragalus and the os calcis. The percentage of satisfactory and permanent end results in the stabilization of paralytic feet has been found to be thus materially increased.