A comparative biomechanical evaluation of a noncontacting plate and currently used devices for tibial fixation
A comparative biomechanical evaluation of a noncontacting plate and currently used devices for tibial fixation
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DOI：
10.1097/00005373-199601000-00002
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发表时间：
1996-01-01
影响因子：
--
通讯作者：
Swiontkowski, MF
中科院分区：
文献类型：
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作者：
Kowalski, MJ;Schemitsch, EH;Swiontkowski, MF
骨折愈合期间，由于接骨板干扰血液供应，固定接骨板下出现多孔骨，导致新的接骨板设计减少了接骨板与骨的接触。与通常用于固定的植入物相比，这些器械提供的固定稳定性尚不清楚。因此，在截骨部位有和没有皮质接触的情况下，比较了用动态加压接骨板、外固定器或两种非接触接骨板固定的截骨合成胫骨托在轴向压缩、弯曲和扭转方面的结构刚度。本研究的结果表明：（1）如果在距胫骨表面不超过5 mm的距离处使用，非接触接骨板结构实现的固定刚度与使用动态加压接骨板或外固定器的结构相当;（2）非接触接骨板的固定刚度随着接骨板和骨表面之间距离的增加而降低。
The appearance of porous bone under fixation plates during fracture healing, attributed to disturbance of blood supply by the plate, has led to new plate designs with reduced plate to bone contact. The fixation stability afforded by these devices, in comparison to implants commonly used for fixation, is not well known. Therefore, the construct stiffnesses of osteotomized synthetic tibiae fixed with dynamic compression plates, external fixators, or two configurations of noncontact plates were compared in axial compression, bending, and torsion with and without cortical contact at the osteotomy site. The results of this study show that (1) the noncontact plated constructs achieve comparable fixation rigidity to constructs using dynamic compression plates or external fixators, if applied at a distance no greater than 5 mm from the surface of the tibia, and (2) the fixation rigidity of the noncontact plate decreases as the distance between plate and bone surface increases.