title: Radiological evaluation of combined valgus extension osteotomy and tectoplasty for the treatment of Herring group C Perthes patients.
abstract: OBJECTIVE
  In this study we evaluated the results of combined proximal femoral valgus extension osteotomy and tectoplasty in the treatment of Herring group C Perthes disease with hinge abduction.
  
  
  METHODS
  This study was carried out in 11 male patients who underwent combined proximal femoral valgus extension osteotomy and tectoplasty for hinge abduction related to Perthes disease between January 2002 and February 2009. All patients were assessed as group C according to the Herring lateral pillar classification. The mean age at the time of surgery was nine years and one month with an age range of six years to 11 years and two months. All patients had pain and hinge abduction preoperatively.
  
  
  RESULTS
  The mean follow-up was 65 months (range 26 to 111 months). In the patients who received a proximal valgus extension osteotomy and tectoplasty, the postoperative femoral head containment was significantly increased radiographically. The postoperative femoral head containment was evaluated on radiographs which were taken one and three months after the surgery. After healing of the osteotomy, one-year and final control graphies were evaluated. We carried out a comprehensive evaluation of preoperative and postoperative radiographs that included measuring; subluxation ratio, femoral head coverage ratio, femoral head size ratio, Sharp's angle, CE (center-edge) angle, neck-shaft angle, caput index and acetabular depth index. Consequently there were significant radiographic healing and improvements from time of initial follow-up to final follow-up.
  
  
  CONCLUSIONS
  This study has shown that, in the short-term, combined valgus extension osteotomy and tectoplasty relived pain and corrected deformity in patients with hinge abduction. As growth continues the remodelling of hip joint is influenced in a positive way.
authors.affiliation: Department of Orthopedics and Traumatology, Erzurum Regional Training and Research Hospital, Erzurum, Turkey. bakiemre61@yahoo.com
authors.forename: Mehmet Emre
authors.initials: ME
authors.lastname: Baki
authors.forename: Duygu
authors.initials: D
authors.lastname: Baki
authors.forename: Hafız
authors.initials: H
authors.lastname: Aydın
authors.forename: Servet
authors.initials: S
authors.lastname: Kerimoğlu
authors.forename: Celal
authors.initials: C
authors.lastname: Baki
mesh_terms: D002648:Child; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D006621:Hip Joint / Q000601:surgery*; D006801:Humans; D007873:Legg-Calve-Perthes Disease / Q000145:classification / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D010027:Osteotomy; D011859:Radiography; D016059:Range of Motion, Articular; D012720:Severity of Illness Index; D016896:Treatment Outcome