Department of Radiology, University of Missouri, Columbia, Missouri.
Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio.
J Knee Surg. 2022 Apr;35(5):498-501. doi: 10.1055/s-0042-1743224. Epub 2022 Feb 28.
Knee dislocations, aka multiligamentous injuries, are uncommon but devastating injuries often following high-energy trauma. Tears of the major knee stabilizers are well documented; however, injuries of the knee extensor mechanism are less commonly reported. The extensor mechanism is comprised of the patella, patellar tendon, and quadriceps tendons. Magnetic resonance imaging (MRI) is the preferred imaging modality of internal derangements of the knee due to its excellent soft tissue contrast. In this article, we will discuss the normal imaging findings of the extensor mechanism and review abnormalities following knee dislocation.
膝关节脱位，又称多韧带损伤，虽不常见，但常因高能创伤所致，后果严重。膝关节主要稳定结构的撕裂已有充分记载；然而，股四头肌肌腱和髌骨、髌腱等伸膝装置的损伤则较少报道。伸膝装置由髌骨、髌腱和股四头肌肌腱组成。磁共振成像（MRI）由于其出色的软组织对比度，是膝关节内部紊乱的首选影像学检查方式。在本文中，我们将讨论伸膝装置的正常影像学表现，并复习膝关节脱位后的异常表现。
