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Korean J Spine > Volume 1(2); 2004 > Article
The Use of the AXIS Plate and Screw System for Posterior Cervical Internal Fixation
Soon Chan Kwon, M.D., Seung Chul Rhim, M.D., Sung Woo Roh, M.D. and Sang Ryong Jeon, M.D.
Department of Neurosurgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Korea
AXIS 금속판-나사못 시스템을 이용한 후방 경추 내고정술의 임상경험
울산대학교 의과대학 서울아산병원 신경외과학교실
Various methods of posterior cervical internal fixation have been used alone, or in combination with anterior fusion, for cervical instability. We reviewed our experiences of posterior cervical internal fixation using the AXIS plate and screw system to assess efficacy of fixation and device-related complications.
Materials and Methods
Totally 20 patients(12 males and 8 females, age range 26 to 69 years) were operated with the AXIS plate and screw system. The surgical indications were spinal instability due to trauma in 10 patients, metastatic tumor in 3 patients, cervical spondylotic myelopathy with kyphosis in 2 patients, OPLL in 3 patients, primary tumor in 1 patient, and post-laminectomy kyphosis in 1 patient. One motion segment was stabilized in 3 patients, two motion segments in 5 patients, three motion segments in 4 patients, four motion segments in 3 patients, five motion segments in 4 patients, and six motion segments in one patient(average stabilized motion segments: 3.2). Stabilized vertebrae were from C2 to T3. Two patients were wexpired early due to medical problems. The remaining 18 patients were followed up from 6 to 47 months(mean 25.3 months). eretrospectively analyzed clinical and radiologic results.
Solid arthodesis was achieved in 94.4% of patients. In one patient who had been operated for cervical metastatic tumor from thyroid cancer, there was delayed screw pull-out and instrument failure. Sagittal lordotic angle was increased about 8.7 at post-operation 6 month. Among total 124 inserted screws, only 3 screws were mal-positioned. There was one complication of root injury associated with mal-positioned screw. Delayed increased sagittal kyphosis was noted in one patient without clinical sequelae. There were two superficial wound problems which needed wound revision.
Posterior cervical fixation using the AXIS plate and screw system was considered as one of valuable surgical options in posterior cervical internal fixations, particularly, in multi-level fusion as well as cervico-thoracic junction lesions.
Keywords: Posterior cervical internal fixationㆍAXIS plate and screw systemㆍMulti-level fusion

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