【摘要】 目的评价改进后的屈膝25°髌骨轴位 X 线摄片及多种测量法的临床意义。方法用特制髌骨轴位摄影架摄片,测量无症状者(正常人)30名作为对照组;有前膝痛(AKP),经轴位摄片发现髌骨排列异常者154例。测量沟角(SA)、适合角(CA)、髌骨侧方移位度(L5)、外侧髌骨角(LPFA)、髌骨指数(PET)、髌骨横向移位距离(LPD)。结果 2组各参数平均值分别为:对照组:SA137.38°,CA-10.73°,LS 10.49%,LPFA 13.70°,PFI 0.48,LPD 0.45 mm;AKP 组:SA 142.38°,CA0.71°,LS 19.68%,LPFA 12.12°,PFI 1.13,LPD 0.42 mm。2组各参数比较,t 值分别为9.36、10.16、4.18、7.98、0.82、12.29,除 LPD 的 P 值>0.05外,其他各项 P 值均<0.01。反映髌骨排列异常的敏感性以 PFI、CA、LS、LPFA、LPD 较明显,分别为71.66%、63.33%、56.66%、21.60%、16.66%。结论采用改进后的屈膝25°髌骨轴位摄片,可使摄片成功率及清晰度明显提高,使划线测量简易准确,得出的相关资料更为可靠。更多还原

【Abstract】 Objective To summarize the improved method of photographing axial view of the patella by genuflex at 25 degree angle and evaluate synthetically various measures.Methods Special projection frame was made to photograph in the study.Thirty normal people were enrolled as controls and 154 patients with fore-knee pain were included in the patient group.The patients were found to be abnormal in the arrangement of the patella by patella axial view photographs.Measures included sulcus angle(SA), congruence angle(CA),lateral shift(LS),later patellofemoral angle(LPFA),patellofemoral index (PFI),and lateral patellar displacement(LPD).Results The average value of the parameter of two growps respectively are comparison group of SA 137.38°,CA-10.73°,LS 10.49%,LPFA 13.70°,PFI 0.48,LPD 0.45 mm and observation group of:SA 142.38°,CA -0.71°,LS 19.68%,LPFA 12.12°,PFI 1.13,LPD 0.42 mm.There was significant difference between the control group and patients for most measures except LPD(P<0.01).The measures of PFI,CA,LS,LPTA and LPD were sensitive to the disarrangement of the patella,with sensitivity of 71.66%,63.33%,56.66%,21.60%,16.66% respectively.Conclusions The method of photographing axial view of the patella by genuflex at 25 degree angle is effective.It increases distinctness of the photographs.Furthermore,the method makes line-drawing more easily and measuring more accurately.更多还原