• Title/Summary/Keyword: Lag screw osteosynthesis

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CLINICAL STUDY OF PROGNOSIS USING LAG SCREW OSTEOSYNTHESIS IN MANDIBULAR CONDYLE FRACTURE (하악 과두 골절 환자에서 Lag Screw를 이용한 치료시 예후에 관한 임상적 연구)

  • Lee, Dong-Keun;Min, Seung-Ki;Bae, Jin-Oh;Yang, Hee-Chang
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.19 no.2
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    • pp.157-166
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    • 1997
  • Treatment of condylar fracture is still controversial, but the indication of surgical mangement is increased due to improved fixation methods and surgical techniques. In this article, we report our clinical and radiological results with the use of lag screw osteosynthesis for fixation of fractured mandibular condyle. 12 case of condyle fracture treated by open reduction and fixation with lag screw were monitored for an average of 10 months (range from 6 months to 19 months) postoperatively. The obtained results are as follows : 1. Postoperative maximum mouth opening is achieved over 40mm except one patient. 2. Although slight crepitus and deviation of mandible during mouth opening were found, Temporomandibular joint problem is satisfactory in all but one patient. 3. Distal migration of screw and resorption of fractured fragment were found in each 2 patients, but good functional recovery was achieved in all. According to the above results, we think that lag screw osteosynthesis is relatively indicated in level III or IV condylar fracture.

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CLINICAL STUDIES OF LAG -SCREW OSTEOSYNTHESIS IN CONDYLAR FRACTURES OF THE MANDIBLE (하악 과두 골절 환자에서 Lag-screw를 이용한 관혈적 정복 후 임상적 연구)

  • Jeong, Jong-Cheol;Song, Min-Seok;Choi, Jae-Uk;Kim, Seong-Beom;Seo, Ji-Hun;Lee, Gye-Hyeok
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.27 no.5
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    • pp.442-446
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    • 2001
  • Purpose : This study evaluated clinical and radiographic results after open reduction and lag-screw fixation of mandibular condyle fractures. Patients and Methods : 26 patients had been treated by lag-screw fixation for madibular condyle fracures via submandibular approach and follow up for over 6 months. The lag-screw used in this study was designed by Eckelt. Results : Radiographically, resorption of the condyle head found in 4 cases (15%) and minimal displacement of the condyle head was found in 3 cases (12%). Post-operative infection were not found in all cases. Clinically, All patiens had a stable occlusion and normal mouth opening (over 40mm). TMD problems with crepitus or some discomfort encountered in 4 patients but tolerable to the patients. Conclusion : Lag screw fixation can be a good option especially high level condylar fractures, however this procedure must be used in cautiously because of slipping of the fragments and possible to resorption of the fragments.

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