title: Acetabular ventroversion with double pelvic osteotomy versus triple pelvic osteotomy: a cadaveric study in dogs.
abstract: OBJECTIVE
  To determine which of 3 different plate angles (20°, 25°, 30°) used in double pelvic osteotomy (DPO) would result in the most similar acetabular angle (AA) achieved with a 20° triple pelvic osteotomy (TPO) technique in dogs.
  
  
  METHODS
  Experimental anatomic study.
  
  
  METHODS
  Cadaveric canine pelves (n = 8).
  
  
  METHODS
  Transverse plane computed tomographic images of cadaveric pelves with intact sacroiliac joints, mounted in a custom jig, were made (baseline) and again after DPO (20°, 25°, 30°) and TPO (20°) and pelvic angles measured in 6 transverse planes. Pelvic angles of the 3 DPO techniques were compared with TPO using concordance correlation to determine which DPO angle resulted in an acetabular ventroversion angle closest to TPO.
  
  
  RESULTS
  Mean ± SD AAs were 32.89 ± 2.23 (baseline), 47.39 ± 4.39 (20° DPO), 51.43 ± 5.06 (25° DPO), 54.75 ± 4.38 (30° DPO), and 50.20 ± 5.76 (20° TPO). Concordance correlations for the AA compared with 20° TPO were 0.027 (baseline), 0.721 (20° DPO), 0.902 (25° DPO), and 0.593 (30° DPO). A concordance correlation of ≥ 0.8 indicates good correlation.
  
  
  CONCLUSIONS
  A 25° DPO is most similar in acetabular ventroversion to 20° TPO (concordance correlation, 0.902).
authors.affiliation: Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA. punkej@missouri.edu
authors.forename: John P
authors.initials: JP
authors.lastname: Punke
authors.forename: Derek B
authors.initials: DB
authors.lastname: Fox
authors.forename: James L
authors.initials: JL
authors.lastname: Tomlinson
authors.forename: J Wade
authors.initials: JW
authors.lastname: Davis
authors.forename: F A
authors.initials: FA
authors.lastname: Mann
mesh_terms: D000077:Acetabulum / Q000033:anatomy & histology / Q000601:surgery; D000818:Animals; D001860:Bone Plates / Q000662:veterinary*; D004285:Dogs / Q000601:surgery*; D005260:Female; D066298:In Vitro Techniques; D008297:Male; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*; D010384:Pelvic Bones / Q000033:anatomy & histology / Q000601:surgery*