title: Comparison of the clinical effects of treatment of osteochondroma by two types of vertical ramus osteotomy.
abstract: The purpose of this retrospective study was to evaluate 10 patients with osteochondroma of the mandibular condyle who were treated by vertical ramus osteotomy. Three patients had resection of the condyle and reconstruction with free vertical ramus osteotomy grafts (free graft group) and seven had pedicled vertical sliding ramus osteotomy grafts (pedicled graft group). The mean (range) observation period was 30 months. All patients had satisfactory clinical outcomes, and facial symmetry and good occlusion were achieved during the first 10 months. However, slight facial asymmetry was observed in patients treated by free grafts at 11 months, as the mandible deviated to the operated side when the mouth was opened. Postoperative radiographs showed varying degrees of neocondylar resorption and reduction in height. Patients treated with pedicled grafts did not develop these symptoms, and had no bony resorption to speak of on radiographs taken during the follow-up period. In conclusion, the advantages of the pedicled graft over the free graft include less bony resorption and better long-term clinical outcomes.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, China; State Key Laboratory of Oral Diseases and Department of Oral and Maxillofacial Surgery, Sichuan University, West China College of Stomatology, Chengdu 610041, China.
authors.forename: H
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Department of Oral and Maxillofacial Surgery, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, China.
authors.forename: C
authors.initials: C
authors.lastname: Liao
authors.affiliation: State Key Laboratory of Oral Diseases and Department of Oral and Maxillofacial Surgery, Sichuan University, West China College of Stomatology, Chengdu 610041, China. Electronic address: dr_hu@yahoo.com.
authors.forename: J
authors.initials: J
authors.lastname: Hu
authors.affiliation: Department of Oral and Maxillofacial Surgery, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, China. Electronic address: de_fwross@yahoo.com.
authors.forename: W
authors.initials: W
authors.lastname: Fei
mesh_terms: D000328:Adult; D005146:Facial Asymmetry / Q000601:surgery; D005157:Facial Pain; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000601:surgery; D008334:Mandible / Q000601:surgery; D008335:Mandibular Condyle / Q000601:surgery*; D008875:Middle Aged; D015831:Osteochondroma / Q000000981:diagnostic imaging / Q000601:surgery* / Q000628:therapy*; D059229:Osteotomy, Sagittal Split Ramus / Q000379:methods*; D017060:Patient Satisfaction; D011183:Postoperative Complications; D019651:Plastic Surgery Procedures / Q000379:methods*; D012189:Retrospective Studies; D013705:Temporomandibular Joint Disorders / Q000601:surgery / Q000628:therapy; D016896:Treatment Outcome
keywords: Osteochondroma; reconstruction of madibular condyle; vertical ramus osteotomy