title: Os calcis osteotomy in the management of deformities of the hindfoot in spinal dysraphism.
abstract: The results of 52 primary os calcis osteotomies in 44 patients with spinal dysraphism are reviewed. There were 42 varus hindfoot deformities and ten valgus hindfoot deformities. The results indicate that the operation is simple and uncomplicated, but over a mean 5.8 year follow-up for the varus feet and 6.5 years for the valgus feet, over 50% of the feet developed either a moderate or severe recurrence of deformity. Os calcis osteotomy appeared from this series to be a moderately successful interim operation for the equinus varus foot, delaying the need for premature triple arthrodesis, but the long-term results in cavo-varus feet with claw toes were uniformly poor. Furthermore, it appeared to be unsatisfactory in the mobile flail valgus foot unless the subtalar joint had been stabilised by fusion. Correction of proximal joint or bone deformity and muscle imbalance is considered necessary if satisfactory results are to be achieved from the osteotomy.
mesh_terms: D000293:Adolescent; D000328:Adult; D002111:Calcaneus / Q000601:surgery*; D002648:Child; D002675:Child, Preschool; D005260:Female; D005528:Foot / Q000601:surgery; D005532:Foot Deformities, Congenital; D006801:Humans; D008297:Male; D010027:Osteotomy; D013122:Spinal Diseases / Q000601:surgery