Lo JiaHsuan, Müller Otto, Dilger Torsten, Wülker Nikolaus, Wünschel Markus
Biomechanics Research Laboratory, Department of Orthopaedics, University of Tübingen, Tübingen, Germany.
Knee. 2011 Dec;18(6):491-5. doi: 10.1016/j.knee.2010.10.009. Epub 2010 Nov 12.
This study investigated passive translational and rotational stability properties of the intact knee joint, after bicruciate-retaining bi-compartmental knee arthroplasty (BKA) and after posterior cruciate retaining total knee arthroplasty (TKA). Fourteen human cadaveric knee specimens were used in this study, and a robotic manipulator with six-axis force/torque sensor was used to test the joint laxity in anterior-posterior translation, valgus-varus, and internal-external rotation. The results show the knee joint stability after bicruciate-retaining BKA is similar to that of the native knee. On the other hand, the PCL-retaining TKA results in inferior joint stability in valgus, varus, external rotation, anterior and, surprisingly, posterior directions. Our findings suggest that, provided functional ligamentous structures, bicruciate-retaining BKA is a biomechanically attractive treatment for joint degenerative disease.
本研究调查了完整膝关节、双交叉韧带保留双髁膝关节置换术（BKA）后以及后交叉韧带保留全膝关节置换术（TKA）后的被动平移和旋转稳定性。本研究使用了14个新鲜人尸体膝关节标本，并使用带有六轴力/扭矩传感器的机器人操纵器来测试关节在前后平移、内外翻和内外旋转时的松弛度。结果显示，双交叉韧带保留BKA后的膝关节稳定性与天然膝关节相似。另一方面，保留PCL的TKA在内外翻、外旋、前向以及令人惊讶的后向方向上导致关节稳定性较差。我们的研究结果表明，在保留功能性韧带结构的情况下，双交叉韧带保留BKA对于关节退行性疾病是一种具有生物力学吸引力的治疗方法。
