title: Chevron osteotomy in patients with scheduled osteotomy of the medial malleolus.
abstract: OBJECTIVE
  The aim of the present study was to evaluate intermediate-term outcomes of Chevron osteotomy for treatment of osteochondral lesions of the talus with mosaicplasty and to assess its effect on surgery and whether it reduces complications that might occur intraoperatively.
  
  
  METHODS
  The present study included a total of 42 patients (31 men, 11 women) who underwent Chevron osteotomy of the medial malleolus and who had been followed for more than 2 years. Mean age of the patients was 34 years (range: 18-54 years). Preoperatively, size of the lesions was measured in millimeters in the coronal and sagittal planes using magnetic resonance imaging (MRI). The angle between the osteotomy with the long axis of the tibia was measured on the coronal plane, the angle between the arms and the angle for the screws to be directed to the osteotomy line were measured on the sagittal plane on the postoperative images. Nonunion, malunion, and complications from the screws were evaluated from X-ray images taken at the final follow-up.
  
  
  RESULTS
  Mean duration for follow-up was 31.4 years (range: 24-46). On the X-ray images taken at the final follow-up, no distraction, migration of the distal part, or rotation was observed. Only 1 patient experienced radiological non-union. Mean duration to union was 5.8 weeks (range: 4-14 weeks). Screws of 8 patients were removed at an average of 7.4 months (range: 5-11 months). The angle between the osteotomy line and long axis of the tibia was 29.0°±6.5°, the angel between the osteotomy arms on the sagittal plane was 74.7°±8.3°, and the direction angle of the screws on the coronal plane was 85.7°±5.9°.
  
  
  CONCLUSIONS
  Chevron osteotomy is an assistive surgical method used for treatment of osteochondral lesions located in the medial talar joint surface (TOL) which provides fast anatomical healing because it allows efficient fixation due to its geometry.
authors: Metin Sabancı Baltalimanı Bone Diseases Training and Research Hospital, Department of Orthopaedics and Traumatology, İstanbul, Turkey.
authors: Murat
authors: M
authors: Gül
authors: Metin Sabancı Baltalimanı Bone Diseases Training and Research Hospital, Department of Orthopaedics and Traumatology, İstanbul, Turkey.
authors: Umut
authors: U
authors: Yavuz
authors: Metin Sabancı Baltalimanı Bone Diseases Training and Research Hospital, Department of Orthopaedics and Traumatology, İstanbul, Turkey.
authors: Engin
authors: E
authors: Çetinkaya
authors: Metin Sabancı Baltalimanı Bone Diseases Training and Research Hospital, Department of Orthopaedics and Traumatology, İstanbul, Turkey.
authors: Ümit Selçuk
authors: ÜS
authors: Aykut
authors: Metin Sabancı Baltalimanı Bone Diseases Training and Research Hospital, Department of Orthopaedics and Traumatology, İstanbul, Turkey.
authors: Barış
authors: B
authors: Özkul
authors: Metin Sabancı Baltalimanı Bone Diseases Training and Research Hospital, Department of Orthopaedics and Traumatology, İstanbul, Turkey.
authors: Yavuz Selim
authors: YS
authors: Kabukçuoğlu
mesh_terms: D000293:Adolescent; D000328:Adult; D000843:Ankle Joint; D005260:Female; D006132:Growth Plate / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods*; D013628:Talus / Q000601:surgery; D013977:Tibia / Q000601:surgery*; D055815:Young Adult