Department of Radiology, CHU Pasteur 2, 06001 Nice cedex 1, France.
Department of Radiology, Institute for Locomotion, Sainte-Marguerite Hospital, AP-HM, 13009 Marseille, France; CNRS, ISM, Institute Movement Sci, Aix-Marseille Université, 13000 Marseille, France.
Diagn Interv Imaging. 2021 May;102(5):321-327. doi: 10.1016/j.diii.2020.11.013. Epub 2020 Dec 15.
The purpose of this study was to assess and compare the prevalence of meniscal, ligament and cartilage lesions on knee MRI in a series of age- and sex-matched patients with and without medial meniscal ossicle.
Forty-two knee MRI examinations obtained in 42 patients (36 men, 6 women; mean age, 42.5±22.2 [SD] years; range: 19-65years) on which a medial meniscal ossicle was present were compared to 42 knee MRI examinations obtained in 42 age- and sex-matched patients (36 men, 6 women; mean age, 41.8±20.6 [SD] years; range: 19-65years) on which no medial meniscal ossicles were present. Two radiologists (R1, R2) blinded to the presence of meniscal ossicle by reading only the fat-saturated intermediate-weighted MR images separately assessed the presence of meniscal, ligament and cartilage lesions on these 84 knee MRI examinations. Prevalence of meniscal and ligament lesions and degree of cartilage degradation at MRI were compared between knees with and those without medial meniscal ossicle.
In knees with medial meniscal ossicle, R1 and R2 detected 33 (79%) and 38 (90%) medial meniscal lesions, respectively that involved the posterior root (n=25/32 for R1/R2), the posterior horn (n=19/14 for R1/R2) or the body (n=8/10 for R1/R2). The prevalence of posterior root tear (60% [25/42]/76% [32/42] for R1/R2) and that of anterior cruciate ligament (ACL) lesions (48% [20/42]/57% [24/42] for R1/R2) as well as the medial cartilage degradation score (3.35±0.87 [SD] for R1 and 3.92±0.78 [SD] for R2) were significantly greater in knees with than in knees without medial meniscal ossicle (root lesions: P<0.01 for both readers; ACL lesions and medial cartilage score: P<0.01 for both readers).
On MRI examination, knees with a medial meniscal ossicle demonstrate a greater frequency of medial posterior root tear and of ACL lesions and a greater degree of medial femoro-tibial cartilage degradation by comparison with knees without medial ossicle.
本研究旨在评估和比较有/无内侧半月板骨赘的一系列年龄和性别匹配患者的膝关节 MRI 上半月板、韧带和软骨损伤的发生率。
42 例膝关节 MRI 检查（共 42 例患者，男 36 例，女 6 例；平均年龄 42.5±22.2[标准差]岁；年龄范围：19-65 岁）中存在内侧半月板骨赘，将其与 42 例年龄和性别匹配的膝关节 MRI 检查（共 42 例患者，男 36 例，女 6 例；平均年龄 41.8±20.6[标准差]岁；年龄范围：19-65 岁）进行比较，后者不存在内侧半月板骨赘。两位放射科医生（R1、R2）仅通过阅读脂肪饱和中等加权 MR 图像来分别评估这 84 例膝关节 MRI 检查中半月板、韧带和软骨损伤的存在情况。比较有/无内侧半月板骨赘的膝关节半月板和韧带损伤的发生率以及 MRI 上软骨退变的程度。
在有内侧半月板骨赘的膝关节中，R1 和 R2 分别检测到 33（79%）和 38（90%）例涉及后根（R1/R2 中各 25/32 例）、后角（R1/R2 中各 19/14 例）或体部（R1/R2 中各 8/10 例）的内侧半月板病变。后根撕裂的发生率（R1/R2 中分别为 60%[25/42]/76%[32/42]）和前交叉韧带（ACL）损伤的发生率（R1/R2 中分别为 48%[20/42]/57%[24/42]）以及内侧软骨退变评分（R1 为 3.35±0.87[标准差]，R2 为 3.92±0.78[标准差]）在有内侧半月板骨赘的膝关节中明显高于无内侧半月板骨赘的膝关节（后根病变：两位观察者均 P<0.01；ACL 病变和内侧软骨评分：两位观察者均 P<0.01）。
与无内侧骨赘的膝关节相比，内侧半月板骨赘的膝关节 MRI 检查显示内侧后根撕裂、ACL 损伤以及内侧股骨胫骨软骨退变的发生率更高。
