Cha Ji Hyeon, Lee Sang Hoon, Shin Myung Jin, Choi Byeong Kyoo, Bin Sung Il
Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea.
Skeletal Radiol. 2008 Sep;37(9):821-6. doi: 10.1007/s00256-008-0527-3. Epub 2008 Jul 16.
The purpose of this study was to evaluate the relationship between mucoid hypertrophy of the anterior cruciate ligament (ACL) and morphologic change of the intercondylar notch.
We retrospectively reviewed the 105 patients with knee magnetic resonance imaging (MRI) with or without knee arthroscopy [group 1: patients with arthroscopic notchplasty (N = 47), group 2: knee arthroscopy demonstrating intact ACL (N = 33), and group 3: patients with normal knee MRI but no arthroscopy (N = 25)]. Groups 2 and 3 served as an arthroscopic and MR control group, respectively. Two musculoskeletal radiologists reviewed all MR examinations. The intercondylar notch width, notch index (width of intercondylar notch/width of femoral condyle), transverse notch angle (TNA), sagittal notch angle (SNA), and notch area were recorded on axial and sagittal MR images at the midpoint of Blumensaat's line which was identified on sagittal images. The diameter of the ACL was recorded on coronal MR images at the posterior end of Blumensaat's line.
The mean values of the intercondylar notch width, notch index, TNA, SNA, notch area, and ACL diameter for the three groups were 16.0 mm/0.2/50.3 degrees /36.5 degrees /249.0 mm(2)/7.7 mm (group 1); 19.3 mm/0.3/52.9 degrees /40.2 degrees /323.4 mm(2)/4.8 mm (group 2); and 20.3 mm/0.3/51.4 degrees /39.1 degrees /350.8 mm(2)/4.5 mm (group 3). The intercondylar notch width, notch index, SNA, and notch area were smaller, and ACL diameter was thicker in group 1 compared with the other groups (p < 0.05).
Patients with mucoid ACL hypertrophy show a narrower notch, a steeper notch angle, and a smaller notch area than control groups.
本研究旨在评估前交叉韧带（ACL）黏液样肥大与髁间切迹形态变化之间的关系。
我们回顾性分析了105例接受膝关节磁共振成像（MRI）检查的患者，这些患者中有或没有接受膝关节镜检查[第1组：接受关节镜下切迹成形术的患者（N = 47），第2组：膝关节镜检查显示ACL完整的患者（N = 33），第3组：膝关节MRI正常但未接受关节镜检查的患者（N = 25）]。第2组和第3组分别作为关节镜检查和MR对照组。两位肌肉骨骼放射科医生对所有MR检查进行了评估。在矢状位图像上确定的布卢姆萨线中点处的轴位和矢状位MR图像上记录髁间切迹宽度、切迹指数（髁间切迹宽度/股骨髁宽度）、横切迹角（TNA）、矢状切迹角（SNA）和切迹面积。在布卢姆萨线后端的冠状位MR图像上记录ACL的直径。
三组患者的髁间切迹宽度、切迹指数、TNA、SNA、切迹面积和ACL直径的平均值分别为16.0毫米/0.2/50.3度/36.5度/249.0平方毫米/7.7毫米（第1组）；19.3毫米/0.3/52.9度/40.2度/323.4平方毫米/4.8毫米（第2组）；以及20.3毫米/0.3/51.4度/39.1度/350.8平方毫米/4.5毫米（第3组）。与其他组相比，第1组的髁间切迹宽度、切迹指数、SNA和切迹面积较小，而ACL直径较厚（p < 0.05）。
与对照组相比，ACL黏液样肥大的患者切迹更窄、切迹角更陡且切迹面积更小。
