Contracture of the hip in flexion and abduction is a common deformity in cases of infantile paralysis. The resulting disability is so severe and so difficult to relieve that open operation is always necessary in cases of long duration. It is with regard to the operative technic that this paper has been written.
The contracture is caused primarily by a shortening of the tensor fasciae femoris, but in the course of time the gluteus medius, the iliopsoas and the rectus femoris become shortened, as do even the iliofemoral ligament and the capsule.
As in most poliomyelitic deformities, prevention is less difficult than cure. While the child lies in bed during the early stages of the attack of infantile paralysis, the easy and comfortable position is with the thighs widely abducted and the knees flexed. This is the worst possible position, because it allows the tensor fasciae latae and the thigh
RYERSON EW. OSTEOTOMY FOR FLEXION DEFORMITY AT THE HIP DUE TO ANTERIOR POLIOMYELITIS. JAMA. 1933;101(18):1376–1377. doi:10.1001/jama.1933.02740430022007
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