지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
Objective : To improve pedicle screw placement accuracy with minimal radiation and low cost, we developed specially designed K-wire with a marker. To evaluate the accuracy of thoracolumbar pedicle screws placed using the novel guide-pin and portable X-rays. Methods : Observational cohort study with computerized tomography (CT) analysis of in vivo and in vitro pedicle screw placement. Postoperative CT scans of 183 titanium pedicle screws (85 lumbar and 98 thoracic from T1 to L5) placed into 2 cadavers and 18 patients were assessed. A specially designed guide-pin with a marker was inserted into the pedicle to identify the correct starting point (2 mm lateral to the center of the pedicle) and aiming point (center of the pedicle isthmus) in posteroanterior and lateral X-rays. After radiographically confirming the exact starting and aiming points desired, a gearshift was inserted into the pedicle from the starting point into the vertebral body through the center of pedicle isthmus. Results : Ninety-nine percent (181/183) of screws were contained within the pedicle (total 183 pedicle screws : 98 thoracic pedicle screws and 85 lumbar screws). Only two of 183 (1.0%) thoracic pedicle screws demonstrated breach (1 lateral in a patient and 1 medial in a cadaver specimen). None of the pedicle breaches were associated with neurologic or other clinical sequelae. Conclusion : A simple, specially designed guide-pin with portable X-rays can provide correct starting and aiming points and allows for accurate pedicle screw placement without preoperative CT scan and intraoperative fluoroscopic assistance.
목차
등록된 정보가 없습니다.
참고문헌 (24)
참고문헌 신청
Amiot LP. / 2000 / Comparative results between conventional and computer-assisted pedicle screw installation in the thoracic, lumbar, and sacral spine / Spine(Phila Pa 1976) 25:606~614
Belmont PJ Jr. / 2001 / In vivo accuracy of thoracic pedicle screws / Spine(Phila Pa 1976) 26:2340~2346
Brown CA. / 1998 / Complications of pediatric thoracolumbar and lumbar pedicle screws / Spine(Phila Pa 1976) 23:1566~1571
Cotrel Y. / 1988 / New universal instrumentation in spinal surgery / Clin Orthop Relat Res 227:10~23
Esses SI. / 1993 / Complications associated with the technique of pedicle screw fixation. A selected survey of ABS members / Spine(Phila Pa 1976) 18:2231~2238
Belmont PJ Jr. / 2001 / In vivo accuracy of thoracic pedicle screws / Spine(Phila Pa 1976) 26:2340~2346
Brown CA. / 1998 / Complications of pediatric thoracolumbar and lumbar pedicle screws / Spine(Phila Pa 1976) 23:1566~1571
Cotrel Y. / 1988 / New universal instrumentation in spinal surgery / Clin Orthop Relat Res 227:10~23
Esses SI. / 1993 / Complications associated with the technique of pedicle screw fixation. A selected survey of ABS members / Spine(Phila Pa 1976) 18:2231~2238
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