目的 探究股骨滑车发育不良应 用MRI诊断的临床应用价值。方法 将48例 膝关节疼痛，行MRI检查患者作为研究对 象，按诊断结果不同分为2组，对照组24 例为正常病例，实验组24例为股骨滑车发 育不良者；分别观察2组患者股骨滑车间 距、外侧倾斜角度、内外关节滑车关节面 比值、髌骨Wiberg指数及分型。结果 对 照组外侧倾斜角、内外侧关节面比值、髌 骨wiberg指数(P＜0.05)；实验组股骨滑 车间距高于对照组(P＜0.05)。结论 MRI 在股骨滑车发育不良诊断中具有较大临床 意义，不仅能够使股骨形态更真实的反应 出来，其测量数据的可重复性高，能最大 程度的降低测量误差，使诊断的特异性及 敏感性得到提高，且 MRI诊断股骨滑车发 育不良，对患者软组织分辨率更高，能使 其韧带、肌肉等软组织的情况与关节面下 细微骨质水肿、囊变及关节软骨磨损的程 度等均清晰显示，为髌骨关节功能提供较 为详细的信息，值得临床应用与推广。

Objective To explore clinical application value of MRI in the diagnosis of femoral trochlear dysplasia. Methods Forty eight patients with knee pain undergoing MRI examinations were selected as research subjects, who were divided into 2 groups according to different diagnosis results, and patients in the control group were normal, 24 patients in the experimental group suffered from femoral trochlear dysplasia. Femoral tochlear spacing, lateral angle of inclination, ratio of articular surfaces of internal and external patellar trochlea, Wiberg index and classification of 2 groups of patients were observed. Results lateral angle of inclination, ratio of articular surfaces of internal and external patellar trochlea and Wiberg index of patients in the control group hit, being higher than those of patients in the experimental group (P＜0.05). Femoral tochlear spacing of patients in the experimental group being higher than that of patients control group (P＜0.05). Conclusion MRI applied for the diagnosis of femoral trochlear dysplasia delivers clinical significance, it not only can truly reflect form of femoral morphology but also generate high repeatability of measured data, it can reduce the measuring error, thereby improving the specificity and sensitivity of diagnosis at utmost extent, while MRI makes higher resolution on soft tissues of patients in the diagnosis of femoral trochlear dysplasia, it can clearly display the ligament, muscle and other soft tissue and joint surface under slight bone edema, cystic change and wear degree of articular cartilage of patients and provide detailed information for patellar joint function, being worthy of clinical application and promotion.