title: Complete absence of the lumbar spine and sacrum.
mesh_terms: D000293:Adolescent; D000671:Amputation, Surgical; D002648:Child; D002675:Child, Preschool; D000013:Congenital Abnormalities / Q000601:surgery; D006615:Hip / Q000601:surgery; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007866:Leg / Q000002:abnormalities; D008159:Lumbar Vertebrae / Q000002:abnormalities*; D008297:Male; D019736:Prostheses and Implants; D012447:Sacrum / Q000002:abnormalities*; D013848:Thigh / Q000473:pathology