Twenty-three patients with sacral agenesis evaluated at Newington
Children's Hospital between 1959 and 1977 were classified according to
patterns of morphologic deficiency in the bones and articulations. Motor
deficit in these patients corresponded, within one level, to vertebral
loss; sensory deficit did not correspond. The major orthopaedic problems
often associated with sacral agenesis are spinopelvic instability,
scoliosis, myelomeningocele, hip dislocation and contracture, knee
contracture, and foot deformity. These can be controlled or corrected by
proper orthopaedic management.