Anterior Screw Fixation of Type II Odontoid Fracture

제 II 형 치상돌기 골절에서 전방경유 나사못 고정술

  • Kim, Myung-Jin (Department of Neurosurgery, Kyungpook National University, College of Medicine) ;
  • Hwang, Jeong-Hyun (Department of Neurosurgery, Kyungpook National University, College of Medicine) ;
  • Sung, Joo-Kyung (Department of Neurosurgery, Kyungpook National University, College of Medicine) ;
  • Hwang, Sung-Kyu (Department of Neurosurgery, Kyungpook National University, College of Medicine) ;
  • Hamm, In-Suk (Department of Neurosurgery, Kyungpook National University, College of Medicine) ;
  • Park, Yeun-Mook (Department of Neurosurgery, Kyungpook National University, College of Medicine) ;
  • Kim, Seung-Lae (Department of Neurosurgery, Kyungpook National University, College of Medicine)
  • 김명진 (경북대학교 의과대학 신경외과학교실) ;
  • 황정현 (경북대학교 의과대학 신경외과학교실) ;
  • 성주경 (경북대학교 의과대학 신경외과학교실) ;
  • 황성규 (경북대학교 의과대학 신경외과학교실) ;
  • 함인석 (경북대학교 의과대학 신경외과학교실) ;
  • 박연묵 (경북대학교 의과대학 신경외과학교실) ;
  • 김승래 (경북대학교 의과대학 신경외과학교실)
  • Received : 2000.05.15
  • Accepted : 2000.09.01
  • Published : 2000.11.28

Abstract

Objective : The aim of this study is to evaluate clinical outcome of anterior screw fixation for type II odontoid fractures for the prliematim of atlanatoaxial mobility. Methods : Between 1995 and 1999, we treated 15 cases of type II odontoid fractures by anterior screw fixation among 44 cases of odontoid fractures. Thece included 14 males and 1 female aged from 23 to 63 years, with a mean age of 39.7 years. The causes of trauma were traffic accident in 13 cases, slip down in 1 and fall down in 1. The fracture type was type II-P in 7 cases, type II-A in 3, type II-N in 2 and type II-A and P in 3. The fracture line was oblique downward and backward in 6 cases, oblique downward and forward in 3 and horizontally in 6. The range of follow up was 4 to 47 months(mean 26.5 months). Results : Adequate reduction and fixation were obtained in 12 cases. Three cases in which fracture type and line were type II-A and oblique downward forward were failed, so posterior transarticular screw fixation was performed. All except 3 failed cases had adequate cervical movement and stability. There were no operative mortality nor morbidity. Conclusion : Anterior screw fixation provides the best anatomical and functional results for type II odontoid fracture with intact transverse ligament when fracture line is horizontal or oblique downward and backward. But it is limited when fracture line is oblique downward and forward.

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