Kim Y C, Chung I H, Yoo W K, Suh J S, Kim S J, Park C I
Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea.
Clin Anat. 1997;10(6):397-404. doi: 10.1002/(SICI)1098-2353(1997)10:6<397::AID-CA5>3.0.CO;2-M.
The purpose of the present study was to provide detailed information of the morphological and radiological characteristics of the posterolateral structures of the knee. Muscles and ligaments of the posterolateral part of the knee were studied by dissections of 50 adult cadaver knees and by Magnetic Resonance Imaging (MRI) before and after dissections for comparisons. Diverse morphological characteristics of the arcuate ligament were found. The fabellofibular ligament was present in 42.1% of the knees dissected, whereas the popliteofibular ligament was found in 37.5%. A ligamentous structure, which could be called the posterior tibial ligament, was found in 31.6% of the cases that originated from the lateral part of the capsule proximally and inserted distally on the mid portion of the proximal tibia. By comparing the cross sections and the dissections of the cadaver knees, the popliteus muscle, the arcuate ligament, the fibular collateral ligament, the popliteofibular ligament, and the fabellofibular ligament could be identified in MRI. Comprehensive understanding of the posterolateral anatomy of the knee and improved identification of the structures in MRI will help clinicians to make a more accurate and noninvasive diagnosis of posterolateral instability.
本研究的目的是提供膝关节后外侧结构的形态学和放射学特征的详细信息。通过对50个成年尸体膝关节进行解剖，并在解剖前后进行磁共振成像（MRI）检查，以比较膝关节后外侧部分的肌肉和韧带。发现了弓形韧带的多种形态特征。在所解剖的膝关节中，42.1%存在腓肠豆腓侧韧带，而37.5%存在腘腓韧带。在31.6%的病例中发现了一种可称为胫后韧带的韧带结构，其近端起自关节囊外侧部分，远端插入胫骨近端中部。通过比较尸体膝关节的横截面和解剖结构，在MRI中可以识别出腘肌、弓形韧带、腓侧副韧带、腘腓韧带和腓肠豆腓侧韧带。全面了解膝关节后外侧解剖结构并在MRI中更好地识别这些结构，将有助于临床医生对后外侧不稳定做出更准确的无创诊断。
