Laine T, Schlenzka D, Mäkitalo K, Tallroth K, Nolte L P, Visarius H
ORTON Orthopaedic Hospital, Invalid Foundation, Helsinki, Finland.
Spine (Phila Pa 1976). 1997 Jun 1;22(11):1254-8. doi: 10.1097/00007632-199706010-00018.
A prospective clinical trial was done to study the accuracy of pedicle screw placement in 30 consecutive computer-assisted orthopedic surgeries.
To determine the accuracy and clinical applicability of this new method for pedicle screw insertion.
Conventional screw insertion techniques have been associated with high pedicle screw malplacement rates in cadaver studies and clinical studies with postoperative computed tomography evaluation.
Thirty transpedicular, low-back, titanium instrumentations were performed with computer-assisted orthopedic surgery. The accuracy of screw placement was evaluated using a sophisticated computed tomography protocol.
The total number of pedicle screws was 174. Of these, 139 (79.9%) could be inserted with computer-assisted orthopedic surgery. The malplacement rate of computer-assisted orthopedic surgery screws was 4.3%. In screws that were not inserted by computer-assisted orthopedic surgery, the malplacement rate was 14.3%. One malplaced screw that had not been inserted with computer-assisted orthopedic surgery caused L4 root paresis.
The accuracy of pedicle screw placement using computer-assisted surgery proved to be superior to the accuracy obtained when using conventional techniques.
进行了一项前瞻性临床试验，以研究在连续30例计算机辅助骨科手术中椎弓根螺钉置入的准确性。
确定这种新型椎弓根螺钉置入方法的准确性和临床适用性。
在尸体研究和术后计算机断层扫描评估的临床研究中，传统的螺钉置入技术与较高的椎弓根螺钉误置率相关。
采用计算机辅助骨科手术进行30例经椎弓根的下腰部钛合金内固定手术。使用精密的计算机断层扫描方案评估螺钉置入的准确性。
椎弓根螺钉总数为174枚。其中，139枚（79.9%）可通过计算机辅助骨科手术置入。计算机辅助骨科手术螺钉的误置率为4.3%。在未通过计算机辅助骨科手术置入的螺钉中，误置率为14.3%。一枚未通过计算机辅助骨科手术置入的误置螺钉导致L4神经根麻痹。
事实证明，使用计算机辅助手术进行椎弓根螺钉置入的准确性优于使用传统技术时获得的准确性。
