Shellock F G, Mink J H, Deutsch A L, Fox J M
Department of Diagnostic Radiology, Cedars-Sinai Medical Center, Los Angeles, CA.
Radiology. 1989 Sep;172(3):799-804. doi: 10.1148/radiology.172.3.2772191.
A kinematic magnetic resonance (MR) imaging technique for assessment of malalignment of the patella, involving the acquisition of multiple sequential axial images of the patellofemoral joint during the early increments of passive knee flexion, was used to evaluate 130 patients (235 symptomatic patellofemoral joints) showing clinical evidence of having patellar tracking abnormalities. Twenty-three of the patellofemoral joints had undergone previous surgical procedures for patellar realignment. In addition, 14 (28 patellofemoral joints) asymptomatic control subjects were studied. Normal patellar tracking was observed in all of the asymptomatic subjects and in 43 (17%) of the 260 patellofemoral joints in the patient population, 18 (7%) of which were symptomatic. Sixty-nine (26%) of the patellofemoral joints had lateral subluxation of the patella, 106 (41%) had medial subluxation of the patella, 21 (8%) had excessive lateral pressure syndrome, 19 (7%) had lateral-to-medial subluxation of the patella, and two (1%) had dislocation of the patella. Of the 235 patellofemoral joints with suspected abnormalities, 217 (93%) had patellar malalignment. Of the 23 patellofemoral joints that had undergone prior surgery, 20 (87%) had abnormal patellar tracking. Thirteen of 14 (93%) patellofemoral joints that had undergone a prior arthroscopic lateral retinacular release had a medially displaced patella.
一种用于评估髌骨排列不齐的运动学磁共振成像技术，该技术包括在被动膝关节屈曲早期获取髌股关节的多个连续轴向图像，用于评估130例有髌骨轨迹异常临床证据的患者（235个有症状的髌股关节）。其中23个髌股关节此前接受过髌骨重新排列手术。此外，还对14名（28个髌股关节）无症状对照者进行了研究。所有无症状受试者以及患者群体中260个髌股关节中的43个（17%）观察到正常的髌骨轨迹，其中18个（7%）有症状。69个（26%）髌股关节有髌骨外侧半脱位，106个（41%）有髌骨内侧半脱位，21个（8%）有外侧压力综合征，19个（7%）有髌骨由外侧向内侧半脱位，2个（1%）有髌骨脱位。在235个疑似异常的髌股关节中，217个（93%）有髌骨排列不齐。在23个此前接受过手术的髌股关节中，20个（87%）有异常的髌骨轨迹。在14个此前接受过关节镜下外侧支持带松解术的髌股关节中，13个（93%）有髌骨向内侧移位。
