title: Sacral arch defect and low backache.
mesh_terms: D000328:Adult; D000886:Anthropometry; D001416:Back Pain / Q000209:etiology*; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000473:pathology; D008159:Lumbar Vertebrae / Q000002:abnormalities*; D008297:Male; D012447:Sacrum / Q000002:abnormalities*