Clausen J D, Goel V K, Sairyo K, Pfeiffer M
Iowa Spine Research Center, Department of Biomedical Engineering, University of Iowa, Iowa City 52242, USA.
J Biomech Eng. 1997 Aug;119(3):364-6. doi: 10.1115/1.2796102.
The objective of the current study was to develop an in vitro testing protocol to evaluate semi-rigid pedicle screw devices. A corpectomy model protocol exists to evaluate rigid spinal implants; however, semi-rigid devices are contraindicated for this condition. This paper describes a technique that simulates more closely the conditions a semi-rigid device would see in vivo. Finally, the new testing protocol is used to evaluate the DDS pedicle screw-cable system. Benefits and shortcomings of the new protocol are discussed.
本研究的目的是制定一种体外测试方案，以评估半刚性椎弓根螺钉装置。目前存在一种用于评估刚性脊柱植入物的椎体切除模型方案；然而，半刚性装置在这种情况下是禁忌的。本文描述了一种更接近模拟半刚性装置在体内所遇情况的技术。最后，使用新的测试方案来评估DDS椎弓根螺钉 - 缆索系统。讨论了新方案的优点和缺点。
