膝关节X线对外侧髌股挤压综合征的评估

目的评估外侧髌股挤压综合征患者膝关节X线片,明确其诊断意义。方法对实验组和对照组摄膝关节X线片,观察膝关节骨质结构情况,测量滑车角、吻合角及髌股指数,两组间进行比较。结果实验组滑车角（132.44±10.21）°,吻合角（7.67±5.81）°,髌股指数（2.49±1.40）,对照组滑车角（136.8±4.87）°,吻合角（-2.2±-2.71）°,髌股指数（1.25±0.15）。两组间滑车角差异无统计学意义（t=0.887,P〉0.05）;两组间吻合角和髌股指数差异均有统计学意义（吻合角t=4.318,P〈0.05;髌股指数t=2.633,P〈0.05）。两组间髌股关节软骨下骨质硬化,实验组9膝,对照组2膝,差异有统计学意义（2=12.169,P〈0.01）;两组间髌股关节外侧边缘骨赘增生,实验组13膝,对照组3膝,差异有统计学意义（2=12.60,P〈0.01）。结论膝关节X线片是诊断外侧髌股挤压综合征最基本的手段,其中髌股指数应用方便。

Evaluation excessive lateral pressure syndrome of patellofemoral joint by X-ray

Objective To evaluate excessive lateral pressure syndrome of patellofemoral by knee X-ray. Methods The knee X-ray photographs were taken for patients and the control groups, their bone architecture was observed, the trochlea angle, coincidence angle and patellofemoral joint index were also measured. Results The trochlea angle of patients group was （ 132.44 ±10. 21 ）°, and that of the control group was （136. 8±4. 87 ）°, there was no statistical significance between two groups（ t = 0. 887, P 〉 0. 05 ）. The coincidence angle of the patients group was （ 7.67±5.81 ）° and patcllofemoral joint index was （2. 49±1.40）, those of control group were （ - 2. 2±2.71 ） o and （ 1.25 ±0. 15 ） respectively. The difference of coincidence angle and patellofcmoral joint index between two groups had statistical significance （coincidence angle, t = 4. 318, P 〈 0.05 ; patellofemoral joint index, t -= 2. 633, P 〈 0. 05 ）. There was obviously bone architecture change in patient group （osteosclerosis, X^2= 12. 169, P 〈0. 01; hyperostosis, X^2=12. 60, P 〈0. 01 ）. Conclusions X-ray is the fundamental diagnostic method for excessive lateral pressure syndrome of patellofemoral joint, and the patellofemoral joint index is convenient for diagnosis.