Delgado-Martínez A D, Rodríguez-Merchán E C, Ballesteros R, Luna J D
Service of Traumatology and Orthopaedic Surgery, Hospital Princesa de España, University of Jaén, Spain.
Int Orthop. 2000;24(1):5-8. doi: 10.1007/s002640050002.
At least seven parameters have been described for the measurement of patellofemoral malalignment on CT scanning; three of which measure lateral patellar tilt, two lateral patellar shift and two femoral trochlear dysplasia. We studied 22 knees in 18 patients complaining of patellofemoral pain in order to investigate the reproducibility of these methods. CT scans of the patellofemoral joint were performed in each knee at 0 degrees and 20 degrees of flexion. The seven parameters were recorded from each scan by three independent observers in a blind study. The reproducibility was studied by means of the intraclass correlation coefficient (ICC). Parameters measuring lateral patellar tilt showed excellent reliability (ICC>75%). The measurements of lateral patellar shift and femoral trochlear dysplasia showed a fair or poor correlation (ICC<75%). We suggest that parameters for measuring lateral patellar tilt only should be used from CT scanning when planning treatment for patello-femoral malalignment.
在CT扫描中，至少有七个参数可用于测量髌股关节排列不齐；其中三个参数测量髌骨外侧倾斜，两个参数测量髌骨外侧移位，两个参数测量股骨滑车发育不良。我们研究了18例主诉髌股关节疼痛患者的22个膝关节，以调查这些方法的可重复性。在每个膝关节于屈膝0度和20度时进行髌股关节的CT扫描。在一项盲法研究中，由三名独立观察者从每次扫描中记录这七个参数。通过组内相关系数（ICC）研究可重复性。测量髌骨外侧倾斜的参数显示出极佳的可靠性（ICC>75%）。髌骨外侧移位和股骨滑车发育不良的测量显示出中等或较差的相关性（ICC<75%）。我们建议，在规划髌股关节排列不齐的治疗方案时，仅应使用CT扫描中测量髌骨外侧倾斜的参数。
