急性膝关节软骨损伤的MRI表现

目的:分析急性膝关节软骨损伤的MRI表现,以提高对MRI诊断的认识。方法:回顾性分析35例有明确膝关节外伤史,且经关节镜和手术证实为关节软骨损伤患者的膝关节MRI表现,着重观察关节软骨及软骨下骨髓的改变。结果:35例患者共发现52处软骨损伤,其中软骨形态正常,信号异常7处(5例),软骨局限性变薄6处(4例),软骨压迹5处(3例),软骨凹凸不平7处(4例),软骨裂隙状中断10处(6例),软骨缺损11处(9例),软骨缺损伴关节内游离软骨体6处(4例)。MRI还发现软骨损伤附近骨挫伤、隐匿性骨折、半月板及韧带等其他关节结构的损伤。结论:MRI检查能较准确的显示急性膝关节软骨损伤的部位、范围和类型,是急性软骨损伤较佳的无创性检查方法。

MRI Manifestation of Acute Knee-joint Articular Cartilage Injury

Purpose To analyze the manifestation of MRI in the cute knee-joint cartilage injury. Method Analyze 35 cases of knee-joint trauma history, and knee-joint MRI performance of patients with articular cartilage injury which confirmed By arthroscopy and operation, with emphasis on articular cartilage and subchondral lesion. Result 35 cases were found with 52 cartilage injury, among them, cartilage morphology was normal, 17 was abnormal signal （5 cases）, localized thinning of cartilage 6 （4 cases ）, cartilage depression 5 （3 cases ）, cartilage rugged 7 （4 cases ）, car- tilage stenopeie interrupt 10 （6cases）, cartilage defect 11 （9 cases）, cartilage defect with intraarticular free cartilage body 6（4 cases）. In the vicinity of cartilage injury, bone contusion, occult fracture, meniscus and ligament injury also were found by MRI. Conclusion MRI can accurately display the position, extent and type of the acute knee＇joint articular cartilage injury, extent and type of acute cartilage injury, is the preferred noninvasive method.joint; Nuclear Magnetic Resonance