腰椎皮质骨钉道螺钉内固定技术的研究进展

如何对骨质疏松性腰椎疾病患者实施可靠的腰椎内固定技术,是脊柱外科医生共同面临的难题。皮质骨钉道(cortical bone trajectory,CBT)螺钉内固定技术是近几年出现的一种新型的腰椎椎弓根螺钉技术,通过椎弓根皮质骨钉道,使螺钉与皮质骨最大化接触,增加了螺钉固定强度,减少了螺钉松动。本文从腰椎CBT螺钉内固定技术的技术特点、生物力学研究、临床应用状况、优缺点等方面进行综述,并对该技术的未来作一简略展望。

Progress of research on internal fixation of lumbar cortical bone trajectory screws

Achieving solid pedicle screw fixation for patients with osteoporotic lumbar disease is a common challenge facing the spine surgeons. Internal fixation of cortical bone trajectory screws is a new lumbar pedicle screw technique developed in recent years. The application of cortical bone trajectory maximized contact between the screw and the cortical bone, improved holding screw strength thus minimized screw loosing. In this paper, we make a summary of lumbar CBT technique from the aspects of its technical features, biomechanics study, current clinical application, and its merits and demerits. Meanwhile, the outlook of the technique is also being discussed.