Anterior atlantoaxial transarticular screw fixation for treatment of atlantoaxial instability
10.3760/cma.j.issn.1001-8050.2013.4.005
- VernacularTitle:前路经寰枢关节螺钉内固定治疗寰枢椎不稳
- Author:
Ximing LIU
;
Hui KANG
;
Feng XU
;
Xianhua CAI
;
Zhuanghong CHEN
- Publication Type:Journal Article
- Keywords:
Spinal injuries;
Atlanto-axial joint;
Fracture fixation,internal;
Anterior approach
- From:
Chinese Journal of Trauma
2013;(4):307-310
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze clinical outcome of anterior atlantoaxial transarticular screw fixation in treatment of atlantoaxial instability.Methods Thirty-two patients with atlantoaxial instability treated between March 2004 and June 2009 were enrolled in the study.The patients consisted of 21 males and 11 females,at age of 22-64 years (mean 49 years).Atlantoaxial instability was attributed to old odontoid fracture in 10 patients,free odontoid malformation in 16,transverse ligament rupture in two,and rheumatoid arthritis in four.Anterior atlantoaxial transarticular screw fixation under monitoring of cortical somatosensory evoked potential (CSEP) was performed for all patients.Operation time,intraoperative blood loss,and complications were recorded.Japanese Orthopedic Association (JOA) scoring system was used to evaluate neurologic function preoperatively and at one year postoperatively.Results Operation lasted for average 98 minutes and intraoperative blood loss averaged 110 ml.Injuries on esophagus,nerve and vertebral arteries as well as leakage of cerebrospinal fluid were not observed in operation.All patients received a follow-up of 12-31 months.JOA score was increased from preoperative 9.8 points to 15.8 points at one year postoperatively,with improvement rate of 83％.Bone fusion and satisfactory internal fgxation were achieved in all patients.Hypoglossal nerve injury symptom was found in two patients postoperatively and was recovered two months later.Conclusion Anterior atlantoaxial transarticular screw fixation is an effective treatment for atlantoaxial instability.
