Worlicek Michael, Moser Benedikt, Maderbacher Günther, Zentner Raphael, Zeman Florian, Grifka Joachim, Keshmiri Armin
University of Regensburg, Department of Orthopedic Surgery, Asklepios Medical Center, Bad Abbach, Germany.
Department of Trauma Surgery and Orthopedic Surgery, Medical Center Traunstein, Germany.
Knee. 2017 Aug;24(4):711-717. doi: 10.1016/j.knee.2017.04.009. Epub 2017 May 19.
Patellofemoral instability may lead to osteoarthritis, anterior knee pain, and patellar luxation. The purpose of this study was to conduct an exploratory investigation into the difference of patellar kinematics of healthy knees during extension/flexion cycles in neutral, varus and valgus alignment.
The three-dimensional patellar kinematics of 10 lower extremities of whole body cadavers were examined during passive motion, in neutral position, and under valgus and varus stress. Kinematics was recorded by means of an optical computer navigation system.
The study samples did not significantly differ with regard to mediolateral patellar shift and epicondylar distance. Varus stress led to significantly higher external rotation than valgus stress (P=0.04) and to a significantly higher lateral patellar tilt than neutral position (P=0.016) and valgus stress (P=0.016). No difference was found between valgus stress and neutral position.
Analysis of tibiofemoral alignment alone is insufficient for predicting patellar kinematics.
髌股关节不稳定可能导致骨关节炎、膝前疼痛和髌骨脱位。本研究的目的是对健康膝关节在中立位、内翻和外翻位伸展/屈曲周期中髌骨运动学的差异进行探索性研究。
在被动运动过程中，对10具全身尸体下肢的三维髌骨运动学进行检查，包括中立位以及内翻和外翻应力下的情况。通过光学计算机导航系统记录运动学数据。
研究样本在髌骨内外侧移位和髁间距离方面无显著差异。内翻应力导致的外旋明显高于外翻应力（P = 0.04），且髌骨外侧倾斜明显高于中立位（P = 0.016）和外翻应力（P = 0.016）。外翻应力与中立位之间未发现差异。
仅分析胫股关节对线不足以预测髌骨运动学。
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