Boegård T, Rudling O, Petersson I F, Jonsson K
Department of Diagnostic Radiology, County Hospital, Helsingborg, Sweden.
Ann Rheum Dis. 1998 Jul;57(7):395-400. doi: 10.1136/ard.57.7.395.
To assess the correlation between radiographically diagnosed osteophytes in the axial and lateral view of the patellofemoral joint (PFJ) and (1) magnetic resonance (MR) detected cartilage defects in the same joint and (2) knee pain.
Fifty-seven people with chronic knee pain, (aged 41-58 years, mean 50 years) were examined with axial and lateral radiograms when standing of the right and the left PFJ. The presence and grade of osteophytes was assessed. On the same day, a MR examination was performed of the signal knee with proton density and T2 weighted turbo spin-echo sequences in the sagittal and axial view on a 1.0 T imager. Cartilage defects in the PFJ were noted. The subjects were questioned for current knee pain for each knee.
Osteophytes at the PFJ had a specificity varying between 59 and 100% and a positive predictive value between 74 and 100% for MR detected cartilage defects. The corresponding values for osteophytes at the lateral aspect of the femoral trochlea were both 100%. In PFJ with narrowing (< 5 mm) osteophytes had a sensitivity and a positive predictive value of 90 and 95% respectively for MR detected cartilage defects, while in PFJ with non-narrowing (> or = 5 mm) the corresponding values were 75 and 65% and the specificity was 50%. A correlation (p < 0.05) between osteophytes at the inferior pole of the patella and knee pain was found.
Osteophytes at the PFJ are associated with MR detected cartilage defects in the same joint. The relation was strong for osteophytes at the lateral femoral trochlea and in the PFJ with narrowing (< 5 mm), but weak in the PFJ with non-narrowing (> or = 5 mm).
评估髌股关节（PFJ）前后位和侧位X线片上影像学诊断的骨赘与（1）同一关节磁共振（MR）检测到的软骨损伤及（2）膝关节疼痛之间的相关性。
对57例慢性膝关节疼痛患者（年龄41 - 58岁，平均50岁），站立位时拍摄双侧PFJ的前后位和侧位X线片，评估骨赘的存在情况及分级。同一天，使用1.0 T成像仪，通过矢状位和轴位质子密度加权及T2加权快速自旋回波序列对患侧膝关节进行MR检查，记录PFJ的软骨损伤情况。询问受试者每侧膝关节当前的疼痛情况。
PFJ处骨赘对于MR检测到的软骨损伤的特异性在59%至100%之间，阳性预测值在74%至100%之间。股骨滑车外侧的骨赘相应值均为100%。在PFJ间隙变窄（< 5 mm）的情况下，骨赘对于MR检测到的软骨损伤的敏感性和阳性预测值分别为90%和95%，而在PFJ间隙未变窄（≥ 5 mm）时，相应值分别为75%和65%，特异性为50%。发现髌骨下极的骨赘与膝关节疼痛之间存在相关性（p < 0.05）。
PFJ处的骨赘与同一关节MR检测到的软骨损伤相关。对于股骨滑车外侧的骨赘以及间隙变窄（< 5 mm）的PFJ，这种关系较强，但在间隙未变窄（≥ 5 mm）的PFJ中关系较弱。
