Department of Integrated Traditional Chinese Medicine (TCM) and Western Medicine Orthopedics, Honghui Hospital, Xi'an Jiaotong University, Xi'an, 710054, Shaanxi, People's Republic of China.
Shaanxi University of Chinese Medicine, Xianyang, 712046, Shaanxi, People's Republic of China.
Sci Rep. 2021 Mar 31;11(1):7297. doi: 10.1038/s41598-021-86787-x.
Our aim was to assess the accuracy of the obtained posterior tibial slope (PTS) with a fixed angle cutting block. 247 TKAs in 213 patients were reviewed. We included 104 Legion Prosthesis, 76 U2 Knee Prosthesis, 46 NexGen LPS-Flex Prosthesis, and 21 Vanguard Knee System products. Preoperative and postoperative PTS were measured via expanded lateral tibia radiographs. For postoperative PTS, the Legion group had significantly smaller slopes than the U2 Knee group and Vanguard group. However, there was no significant difference between the Legion and NexGen groups, and no significant difference among the NexGen, U2 Knee, and Vanguard groups. Multiple linear regression showed that the different tibial lengths and preoperative PTS had statistically significant effects on postoperative PTS. However, there were weak correlations between the tibial length and PTS, and between preoperative and postoperative PTS. For TKA, although the PTS is not completely consistent with the angle of the cutting block, using conventional tibial bone resection technology with different tibial cutting instrumentations provided by various manufacturers in TKA can obtain safe PTS.
我们的目的是评估使用固定角度截骨块获得的胫骨后倾角（PTS）的准确性。对 213 名患者的 247 例 TKA 进行了回顾。我们纳入了 104 例 Legion 假体、76 例 U2 膝关节假体、46 例 NexGen LPS-Flex 假体和 21 例 Vanguard 膝关节系统产品。通过扩展的外侧胫骨射线照相术测量术前和术后 PTS。对于术后 PTS，Legion 组的斜率明显小于 U2 膝关节组和 Vanguard 组。然而，Legion 和 NexGen 组之间没有显著差异，NexGen、U2 膝关节和 Vanguard 组之间也没有显著差异。多元线性回归显示，不同的胫骨长度和术前 PTS 对术后 PTS 有统计学显著影响。然而，胫骨长度与 PTS 之间以及术前和术后 PTS 之间存在弱相关性。对于 TKA，尽管 PTS 与截骨块的角度不完全一致，但使用不同制造商提供的各种胫骨切割器械的传统胫骨骨切除技术可以获得安全的 PTS。
