In all cases of claw-foot due to anterior poliomyelitis, there is weakness or paralysis of the flexor longus hallucis and the flexor longus digitorum, with over-action of the corresponding extensor tendons, resulting in prominence of the ball of the foot and the development of hammer toes.
Several operative procedures for the correction of such claw-foot deformity with hammer toes have been devised and are being successfully used. These procedures all have as their basis the utilization of the extensor longus hallucis and the extensor longus digitorum for the purpose of dorsally flexing the anterior part of the foot, and at the same time removing their deforming action on the toes. Sherman1 and McKenzie Forbes 2 have advised the transplantation of these tendons into the heads of the metatarsal bones to correct this condition. The Forbes procedure was devised originally, we believe, for use in claw-foot which was not due
DICKSON FD, DIVELEY RL. OPERATION FOR CORRECTION OF MILD CLAW-FOOT, THE RESULT OF INFANTILE PARALYSIS. JAMA. 1926;87(16):1275–1277. doi:10.1001/jama.1926.02680160023007
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