title: [Clinical and radiological short- and mid-term results of triple pelvic osteotomy according to Tönnis in adolescents and adults].
abstract: OBJECTIVE
  We report our clinical and radiological results after triple pelvic osteotomy according to Tönnis and accompanying femoral osteotomies in selected cases.
  
  
  METHODS
  48 patients were evaluated in a retrospective study with an average follow-up to 2 years and 9 months.
  
  
  RESULTS
  In 68 % of our patients excellent to good results in the Harris Hip Score were achieved. We could significantly decrease pain awareness. The CE angle improved significantly from 10.6 degrees to 32.2 degrees and the acetabular angle of the weight-bearing zone according to Bombelli from 20.8 degrees to 3.8 degrees at the last follow-up. The VCA angle according to Lequesne and de Seze improved from 18.6 degrees to 33.5 degrees. Non-union of the ischial or the pubic bone developed in 7 cases as a relevant complication.
  
  
  CONCLUSIONS
  On the basis of our results and the literature, the triple pelvic osteotomy according to Tönnis can be recommended for the treatment of acetabular dysplasia in adolescents and adults.
authors.affiliation: Orthopädische Klinik der Julius-Maximilians-Universität Würzburg, Würzburg, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Kirschner
authors.forename: P
authors.initials: P
authors.lastname: Raab
authors.forename: A
authors.initials: A
authors.lastname: Wild
authors.forename: R
authors.initials: R
authors.lastname: Krauspe
mesh_terms: D000077:Acetabulum / Q000601:surgery; D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D005598:Fractures, Spontaneous / Q000000981:diagnostic imaging / Q000601:surgery; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007870:Leg Length Inequality / Q000000981:diagnostic imaging; D008297:Male; D010027:Osteotomy / Q000379:methods*; D010384:Pelvic Bones / Q000000981:diagnostic imaging / Q000601:surgery*; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011630:Pubic Bone / Q000000981:diagnostic imaging / Q000293:injuries / Q000601:surgery; D011859:Radiography; D012189:Retrospective Studies