School of Biomedical Engineering & Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China.
Engineering Research Center for Digital Medicine of the Ministry of Education, Shanghai, China.
Knee Surg Sports Traumatol Arthrosc. 2024 Nov;32(11):3031-3038. doi: 10.1002/ksa.12341. Epub 2024 Jul 8.
The aim of the present study was to compare 45° and 60° of sagittal femoral tunnel angles in terms of anterior tibial translation (ATT), valgus angle and graft in situ force following anterior cruciate ligament reconstruction (ACLR).
Ten porcine knees were subjected to the following loading conditions: (1) 89 N anterior tibial load at 35° (full extension), 60° and 90° of knee flexion and (2) 5 N m valgus tibial moment at 35° and 45° of knee flexion. ATT and graft in situ force of the intact anterior cruciate ligament (ACL) and ACLR were collected using a robotic universal force/moment sensor (UFS) testing system for (1) ACL intact, (2) ACL-deficient (ACLD) and (3) two different ACLR using different sagittal femoral tunnel angles (coronal 45°/sagittal 45° and coronal 45°/sagittal 60°).
During the anterior tibial load, the femoral tunnel angle of ACLR knees at coronal 45°/sagittal 45° and 60° had significantly higher ATT than that of the ACL-intact knees at 60° of knee flexion (p < 0.05). The femoral tunnel angle of ACLR knees at coronal 45°/sagittal 60° had significantly lower graft in situ force than that of the ACL-intact knees at 60° and 90° of knee flexion (p < 0.05). During the valgus tibial moment, the femoral tunnel angle of ACLR knees at coronal 45°/sagittal 45° and 60° had significantly lower graft in situ force than that of the ACL-intact knees at all knee flexions (p < 0.05).
The femoral tunnel angle of ACLR knees at coronal 45°/sagittal 45° provided similar ATT, valgus angle and graft in situ force to that of ACLR knees at coronal 45°/sagittal 60°. Therefore, both femoral tunnel angles could be used in ACLR, as the sagittal femoral tunnel angle does not appear to be relevant in post-operative knee stability.
Not applicable.
本研究旨在比较前交叉韧带重建（ACLR）后矢状位股骨隧道 45°和 60°时前胫骨平移（ATT）、外翻角度和移植物原位力。
10 个猪膝关节分别进行以下加载条件：（1）在 35°（完全伸直）、60°和 90°膝关节屈曲时施加 89 N 前胫骨负荷；（2）在 35°和 45°膝关节屈曲时施加 5 N·m 外翻胫骨力矩。使用机器人通用力/力矩传感器（UFS）测试系统采集完整前交叉韧带（ACL）和 ACLR 的 ATT 和移植物原位力，用于（1）ACL 完整，（2）ACL 缺失（ACLD）和（3）使用不同矢状位股骨隧道角度（冠状位 45°/矢状位 45°和冠状位 45°/矢状位 60°）的两种不同 ACLR。
在前胫骨负荷过程中，冠状位 45°/矢状位 45°和 60°的 ACLR 膝关节的股骨隧道角度在 60°膝关节屈曲时的 ATT 明显高于 ACL 完整膝关节（p<0.05）。冠状位 45°/矢状位 60°的 ACLR 膝关节的股骨隧道角度的移植物原位力明显低于 ACL 完整膝关节在 60°和 90°膝关节屈曲时的移植物原位力（p<0.05）。在外翻胫骨力矩过程中，冠状位 45°/矢状位 45°和 60°的 ACLR 膝关节的股骨隧道角度的移植物原位力明显低于 ACL 完整膝关节在所有膝关节屈曲时的移植物原位力（p<0.05）。
冠状位 45°/矢状位 45°的 ACLR 膝关节的股骨隧道角度提供了与冠状位 45°/矢状位 60°的 ACLR 膝关节相似的 ATT、外翻角度和移植物原位力。因此，两种股骨隧道角度都可用于 ACLR，因为矢状位股骨隧道角度在后交叉韧带重建术后膝关节稳定性方面似乎并不相关。
不适用。
