title: Evaluation of symphysis pubis and sacroiliac joint distances in skeletally immature patients: A computerized tomography study of 1020 individuals.
abstract: OBJECTIVE
  The aim of this study was to create a reference about normal pubic symphysis and sacroiliac joint widths of children and adolescents.
  
  
  METHODS
  A total of 1020 computerized tomography axial scans of patients without pelvic injury between 2 and 18 year-old were studied. The narrowest width of pubic symphysis and bilateral sacroiliac joints were measured.
  
  
  RESULTS
  The average pubic symphyseal width at 2 years old boys was 6.35 ± 1.06 mm (4.88-9.13 mm). The average of right and left sacroiliac joints' widths at 2 years old boys was 4.56 ± 0.65 mm (3.59-6.07 mm) and 4.58 ± 0.66 mm (3.44-5.74 mm), respectively. The average pubic symphyseal width of 2 years old girls was 5.85 ± 1.14 mm (4.06-8.20 mm). The average of right and left sacroiliac joints' widths at 2 years old girls was found 4.36 ± 0.56 mm (3.50-5.37 mm) and 4.42 ± 0.59 mm (3.58-5.73 mm), respectively. The average pubic symphyseal width at 18 years old boys was found 3.68 ± 1.30 mm (1.90-5.79 mm). The average of right and left sacroiliac joints' widths at 18 years old boys was found 1.97 ± 0.21 mm (1.73-2.41 mm) and 2.04 ± 0.30 mm (1.70-2.65 mm), respectively. The average pubic symphyseal width at 18 years old girls was 3.92 ± 0.52 mm (2.97-4.76 mm). The average of right and left sacroiliac joints' widths at 18 years old girls was found 2.34 ± 0.40 mm (1.58-3.34 mm) and 2.33 ± 0.37 mm (1.58-3.10 mm), respectively.
  
  
  CONCLUSIONS
  Our results suggest that one should be suspicious about pelvic injury if the width of pubic symphysis is over 10 mm and width of sacroiliac joint is over 8 mm especially in patients younger than 10 years-old.
  
  
  METHODS
  Level III Diagnostic study.
authors.affiliation: İzmir Tepecik Training and Research Hospital, Turkey. Electronic address: okalenderer@gmail.com.
authors.forename: Önder
authors.initials: Ö
authors.lastname: Kalenderer
authors.affiliation: İzmir Tepecik Training and Research Hospital, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Turgut
authors.affiliation: İzmir Tepecik Training and Research Hospital, Turkey.
authors.forename: Tayfun
authors.initials: T
authors.lastname: Bacaksız
authors.affiliation: İzmir Tepecik Training and Research Hospital, Turkey.
authors.forename: Emre
authors.initials: E
authors.lastname: Bilgin
authors.affiliation: İzmir Tepecik Training and Research Hospital, Turkey.
authors.forename: Mert
authors.initials: M
authors.lastname: Kumbaracı
authors.affiliation: İzmir Tepecik Training and Research Hospital, Turkey.
authors.forename: Hasan Ali
authors.initials: HA
authors.lastname: Akkan
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D011631:Pubic Symphysis / Q000000981:diagnostic imaging*; D046548:Pubic Symphysis Diastasis / Q000175:diagnosis*; D012016:Reference Values; D012446:Sacroiliac Joint / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*
keywords: Computerized tomography; Measurement; Pediatric; Pubic symphysis; Sacroiliac joint