Hou Zengtao, Lyu Xiao, Zhang Jinfeng
Qingdao Traditional Chinese Medicine Hospital(Qingdao Hiser Hospital), Qingdao Hiser Hospital Affiliated of Qingdao University, Qingdao, 266033.
Qingdao Municipal Hospital, Qingdao, 266071.
Zhongguo Yi Liao Qi Xie Za Zhi. 2023 Sep 30;47(5):502-506. doi: 10.3969/j.issn.1671-7104.2023.05.007.
The purpose of this study is to explore the biomechanical characteristics of the tibia after unicompartmental knee arthroplasty with different distributions of two-pin holes, and to optimize the two-pin holes scheme to reduce the risk of tibial fractures after unicompartmental knee arthroplasty.
Lower limbs model is segmented and reconstructed from computed tomography images. Four combinations of two pin holes created for tibial cutting guide placement are simulated with finite element analysis.
In the third mode, the positioning hole at the proximal medial edge of the tibial plateau has the highest stress value, and the position of the positioning hole near the medial edge of the proximal tibial plateau appears stress concentration.
The present study revealed that placing tibial cutting guide holding pins centrally would lower the risks of periprosthetic fracture of the medial tibial plateau.
本研究旨在探讨单髁膝关节置换术后不同双针孔分布情况下胫骨的生物力学特性，并优化双针孔方案以降低单髁膝关节置换术后胫骨骨折风险。
从计算机断层扫描图像中分割并重建下肢模型。通过有限元分析模拟为胫骨截骨导向器放置创建的双针孔的四种组合。
在第三种模式下，胫骨平台近端内侧边缘的定位孔应力值最高，胫骨近端内侧边缘附近定位孔的位置出现应力集中。
本研究表明，将胫骨截骨导向器固定销置于中心位置可降低胫骨平台内侧假体周围骨折的风险。
