Illinois Bone and Joint Institute, LLC, Department of Orthopaedics, University of Illinois at Chicago, Chicago, Illinois 60053, USA.
J Arthroplasty. 2013 Jan;28(1):28-32. doi: 10.1016/j.arth.2012.02.015. Epub 2012 Apr 11.
Computer-assisted total knee arthroplasty has been demonstrated to provide reproducible limb mechanical alignment within 3° from the neutral mechanical axis. However, restoring proper implant and extremity alignment remains a significant challenge with proximal tibial deficiencies. In this prospective study, we describe the use of computer navigation to quantify the amount of bone loss on the medial or lateral tibial plateau and the use of these data to assess the need for augmentation with metallic tibial wedges. In this study, we demonstrate that computer-assisted total knee arthroplasty in patients with significant tibial deformities can accurately measure severe tibial deformities, predict tibial augment thickness, and provide excellent mechanical alignment and restore the joint line without excessive bony resection, repeated osteotomies, and repeated augment trialing.
计算机辅助全膝关节置换术已被证明可在距中立机械轴 3°范围内提供可重复的肢体机械对线。然而，对于胫骨近端缺损，恢复适当的植入物和肢体对线仍然是一个重大挑战。在这项前瞻性研究中，我们描述了使用计算机导航来量化内侧或外侧胫骨平台的骨量丢失，并使用这些数据来评估是否需要使用金属胫骨楔形物进行增强。在这项研究中，我们证明了在有明显胫骨畸形的患者中进行计算机辅助全膝关节置换术，可以准确测量严重的胫骨畸形，预测胫骨增强厚度，并提供出色的机械对线，恢复关节线，而不会过度切除骨骼、反复截骨和反复进行增强试验。
