Heel deformity in hereditary spastic paraplegia.

The association of pes cavus deformity and neurological disorder is well known. Varus deformity of the heel is often associated with, and may even precede the development of pes cavus. Clinical and radiographic examinations of the feet of members of three kindreds of hereditary spastic paraplegia, a rare neurologic disorder, suggested that the autosomal dominant form manifests a significantly higher incidence and degree of heel varus deformity than the autosomal recessive form of the disease. Therefore, heel varus deformity may be a sign suggestive of autosomal dominant inheritance of hereditary spastic paraplegia.