title: Spondylolysis: acute fracture versus congenital defect.
mesh_terms: D000328:Adult; D050723:Fractures, Bone / Q000000981:diagnostic imaging*; D006801:Humans; D008159:Lumbar Vertebrae / Q000293:injuries*; D008297:Male; D011859:Radiography; D013168:Spondylolisthesis / Q000000981:diagnostic imaging*; D013169:Spondylolysis / Q000151:congenital / Q000000981:diagnostic imaging*