Magnetic resonance imaging analysis of knee bone marrow edema in children with juvenile idiopathic arthritis
Objective To analyze the magnetic resonance imaging(MRI)manifestations of knee bone marrow edema in children with juvenile idiopathic arthritis.Methods Retrospective analysis was used to analyze the MRI images of knee joint bone marrow edema in 12 6 children with juvenile idiopathic arthritis in Henan Children's Hospital from June 2020 to June 2022.There were 98 males and 28 females,aged(7.85±2.11)years,with a course of disease of(8.65±1.05)months,all of which were unilateral knee joint lesions.The synovial thickening and pannus,effusion and fluid accumulation of joint capsule,bone abnormalities,joint cartilage lesions,popliteal lymph node enlargement,abnormal meniscus and ligaments,and vascular shadows in joint cartilage were analyzed.Results In the 126 children with juvenile idiopathic arthritis,multiple pannus covered the surface of the joint femur[66 cases(52.38％)],low signal was dominant on T1W[96 cases(76.19％)],and homogeneous equal signal was dominant on T2W[66 cases(52.38％)].There was a small amount of synovial fluid in the 126 children with juvenile idiopathic arthritis,of whom 102 cases(80.95％)had suprapatellar bursa effusion.The main types of bone marrow edema in children with juvenile idiopathic arthritis were low signal on T1W[48 cases(38.10％)]and patchy fuzzy signal on T2W[41 cases(32.54％)],and multiple"flame"like bone marrow edema with epiphyseal cartilage as the base and facing back to the joint cavity were found in the metaphyseal end[81 cases(64.29％)].The main joint cartilage lesions in children with juvenile idiopathic arthritis were superficial roughness[60 cases(47.62％)]and local thinning[36 cases(28.57％)].Of the 126 children with juvenile idiopathic arthritis,42 cases had enlarged lymph node shadows in the knee and popliteal fossa,with low signal on T1W,low signal/slightly low signal on T2W,and high signal on SPIR/3D/FFE.In children with juvenile idiopathic arthritis,the anterior and posterior corners of the meniscus were mainly deformed[45 cases(35.71％)],and collapsed and fragmented[15 cases(11.90％)],and there were multiple swelling/local wavy changes in the anterior and posterior cruciate ligaments of the knee joint[21 cases(16.67％)].Of the 126 children with juvenile idiopathic arthritis,72 cases showed radial enhanced vascular shadows arranged perpendicular to the cartilage surface of the femoral condyle in the knee joint cartilage.Conclusions In the MRI manifestations of knee joints in children with juvenile idiopathic arthritis,there are multiple synovial thickening,joint cavity effusion,and bone marrow edema.Some children are accompanied by cartilage destruction and subchondral bone invasion.
万方数据
维普
