Identical type I congenital kyphosis in male twins: a brief report

There is limited evidence of familial transmission of congenital spinal deformities. The clinical and surgical histories of two twin male patients with essentially identical congenital kyphotic deformities are reviewed. Each underwent posterior instrumented fusion, and each has maintained position over 2 years since surgical intervention. Identical type I congenital kyphosis in twins is unreported in the literature. Further evaluation of possible genetic factors in the etiology of such deformities is necessary.