Inherited disorders of connective tissue	Neurologic disorders	Musculoskeletal
Ehlers-Danlos Syndrome Marfan syndrome Homocystinuria	Tethered cord syndrome* Syringomyelia Spinal tumor Neurofibromatosis Muscular dystrophy Cerebral palsy Poliomyelitis Friedreich's ataxia Familial dysautonomia (Riley-Day syndrome) Werdnig-Hoffmann disease	Leg length discrepancy Developmental dysplasia of the hip Osteogenesis imper-fecta Klippel-Feil syndrome