Department of Orthopedic and Trauma Surgery, Klinikum Osnabrück, Am Finkenhügel 1-3, D-49076 Osnabrück, Germany.
Am J Sports Med. 2010 Apr;38(4):721-7. doi: 10.1177/0363546509353133. Epub 2010 Mar 3.
The influence of the anteromedial and posterolateral bundles of the anterior cruciate ligament on tibiofemoral rotation might be of great value to detect anterior cruciate ligament injuries and investigate the postoperative restoration of rotational stability.
The anterior cruciate ligament and especially the posterolateral bundle will have a significant influence on isolated tibiofemoral rotation.
Controlled laboratory study.
Tibiofemoral rotation was measured in 20 human cadaveric knees using a noninvasive external measurement device (Rotameter) and a knee navigation system. The measurements of the knees with the intact anterior cruciate ligament were compared with the measurements after isolated resection of the posterolateral bundle and after a complete resection of the anterior cruciate ligament at an applied torque of 5,10, and 15 N.m. Statistical analysis was made using analysis of variance and the post hoc Scheffé test. The Pearson coefficient was used to compare both measurement techniques.
In comparison with knees with an intact anterior cruciate ligament, the knees after isolated resection of the posterolateral bundle showed significant increase of tibiofemoral rotation at almost all applied torques (P <.05). Total resection of the anterior cruciate ligament also produced significant increases compared with the intact anterior cruciate ligament at torques of 5, 10, and 15 N.m as measured by the Rotameter (P <.05). Total resection of the anterior cruciate ligament yielded increases in rotation compared with posterolateral bundle resection alone, but these differences were not significant. The results of the knee navigation system confirmed the measured results of the Rotameter. Comparison of the 2 measurement methods revealed a high correlation at all applied torques, with Pearson correlation coefficients ranging from .85 to .95.
The anterior cruciate ligament and especially the posterolateral bundle of the anterior cruciate ligament have a significant effect on isolated tibiofemoral rotation. Therefore, the developed noninvasive device might be of great importance to investigate the status and the postoperative reconstruction of the anterior cruciate ligament in the clinical setting.
Noninvasive measurement of tibiofemoral rotation might be useful to detect anterior cruciate ligament tears and to evaluate the restoration of rotational stability after anterior cruciate ligament surgery.
前交叉韧带的前内侧束和后外侧束对胫骨股骨旋转的影响对于检测前交叉韧带损伤和研究术后旋转稳定性的恢复可能具有重要意义。
前交叉韧带，特别是后外侧束，将对单纯胫骨股骨旋转产生显著影响。
对照实验室研究。
使用非侵入性外部测量装置（Rotameter）和膝关节导航系统测量 20 个人体尸体膝关节的胫骨股骨旋转。将完整前交叉韧带膝关节的测量值与单独切除后外侧束后的测量值以及施加 5、10 和 15 N·m 扭矩后的完全切除前交叉韧带后的测量值进行比较。使用方差分析和事后 Scheffé 检验进行统计分析。使用 Pearson 系数比较两种测量技术。
与完整前交叉韧带膝关节相比，单独切除后外侧束的膝关节在几乎所有施加的扭矩下都显示出胫骨股骨旋转的显著增加（P <.05）。与完整前交叉韧带相比，Rotameter 测量的 5、10 和 15 N·m 扭矩下，完全切除前交叉韧带也产生了显著增加（P <.05）。与单独切除后外侧束相比，完全切除前交叉韧带会导致旋转增加，但这些差异无统计学意义。膝关节导航系统的结果证实了 Rotameter 的测量结果。两种测量方法的比较显示，在所有施加的扭矩下，相关性都很高，Pearson 相关系数范围为.85 至.95。
前交叉韧带，特别是前交叉韧带的后外侧束，对单纯胫骨股骨旋转有显著影响。因此，开发的非侵入性装置对于研究临床环境中前交叉韧带的状态和术后重建可能具有重要意义。
胫骨股骨旋转的非侵入性测量可能有助于检测前交叉韧带撕裂，并评估前交叉韧带手术后旋转稳定性的恢复。
