title: Radiologic progression of isthmic lumbar spondylolisthesis in young patients.
abstract: In 311 patients (160 girls and women and 151 boys and men) with lumbar spondylolysis/spondylolisthesis 30 years of age or younger at diagnosis and with at least two separate examinations available, radiographs were evaluated retrospectively to estimate the magnitude of slip progression in relation to age and to search for possible prognostic factors of progression. The mean age at diagnosis was 16.2 years, and the mean observation time was 3.8 years. Nine patients (3%) had a slip progression (defined as an increase greater than or equal to 20%). The magnitude of progression per year was low (0.6%). No prognostic factors for progression were found.
authors.affiliation: Department of Radiology, Sahlgrenska Hospital, University of Göteborg, Sweden.
authors.forename: B I
authors.initials: BI
authors.lastname: Danielson
authors.forename: A K
authors.initials: AK
authors.lastname: Frennered
authors.forename: L K
authors.initials: LK
authors.lastname: Irstam
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae; D008297:Male; D011379:Prognosis; D011859:Radiography; D012189:Retrospective Studies; D012737:Sex Factors; D013168:Spondylolisthesis / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000601:surgery; D013169:Spondylolysis / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000601:surgery