title: Slipped capital femoral epiphysis associated with radiation therapy.
abstract: We reviewed 32 children with 41 radiation-therapy associated slipped capital femoral epiphyses (RTASCFE). Ten were from the authors' institutions and 22 from the literature. Gender distribution was equal. The age at diagnosis of the malignancy was 4.3 +/- 3.1 years; the amount of radiation was 4,240 +/- 1,445 rads. Children with RTASCFE presented younger (10.4 +/- 3.2 years) than a routine SCFE. The average symptom duration was 5 +/- 6 months. Children with RTASCFE are usually thin (median weight, 10th percentile) in contrast to children with typical SCFE, who are usually obese (<95th percentile). The majority (82%) of the slips were mild, compared to routine SCFEs (approximately 50%); 28% were bilateral. There was a positive linear relationship between the age at presentation of the SCFE and the age at diagnosis of the malignancy; there was a negative linear relationship between the age at presentation of the SCFE and the amount of radiation therapy.
authors.affiliation: Section of Orthopaedic Surgery, School of Medicine, University of Michigan, Ann Arbor, USA.
authors.forename: R T
authors.initials: RT
authors.lastname: Loder
authors.forename: R N
authors.initials: RN
authors.lastname: Hensinger
authors.forename: P D
authors.initials: PD
authors.lastname: Alburger
authors.forename: D D
authors.initials: DD
authors.lastname: Aronsson
authors.forename: J H
authors.initials: JH
authors.lastname: Beaty
authors.forename: D R
authors.initials: DR
authors.lastname: Roy
authors.forename: R P
authors.initials: RP
authors.lastname: Stanton
authors.forename: R
authors.initials: R
authors.lastname: Turker
mesh_terms: D000293:Adolescent; D017677:Age Distribution; D001858:Bone Nails; D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D004839:Epiphyses, Slipped / Q000209:etiology* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010386:Pelvic Neoplasms / Q000532:radiotherapy*; D011832:Radiation Injuries / Q000209:etiology* / Q000601:surgery; D011878:Radiotherapy / Q000009:adverse effects; D011879:Radiotherapy Dosage; D012189:Retrospective Studies; D018709:Statistics, Nonparametric