Patellofemoral instability is a motion related disease, featured as the patella dislocating from the trochlear groove. Four dimensional computed tomography (4DCT) enables full assessment of the patellofemoral movement. Nevertheless, the quantitative measurements of patellofemoral instability are still under research and currently of limited practical use. The aim of this study is to develop a robust and semi-automatic workflow to quantitatively describe the patellofemoral movement in a patient group of eight suffering from patellofemoral instability. The initial results show agreement with manual observations of the tibial tubercle - trochlear groove (TT-TG) distance in routine practice, and the possibility to evaluate both TT-TG distance and patellar centre - trochlear groove (PC-TG) distance dynamically during active flexion-extension-flexion movement of the knee.

中文翻译：

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基于四维计算机体层摄影术的em股不稳健性强的半自动定量测量。

ello骨不稳定性是一种与运动有关的疾病，特征是featured骨从滑车槽脱位。二维计算机断层扫描（4DCT）可全面评估assessment股运动。然而，pa股不稳定性的定量测量仍在研究中，目前实际应用有限。这项研究的目的是开发一种强大且半自动的工作流程，以定量描述八名from股不稳定患者群中的of股运动。初步结果表明，在常规练习中，手动观察胫骨结节-滑车槽（TT-TG）的距离是一致的，