Fat-suppressed T2-weighted MRI appearance of subchondral insufficiency fracture of the femoral head.
Fat-suppressed T2-weighted MRI appearance of subchondral insufficiency fracture of the femoral head.
复制标题
股骨头软骨下功能不全骨折的脂肪抑制 T2 加权 MRI 表现。
DOI：
10.1007/s00256-016-2462-z
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Iwamoto Y.
中科院分区：
文献类型：
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作者：
Sonoda K;Yamamoto T;Motomura G;Karasuyama K;Kubo Y;Iwamoto Y.
目的：探讨股骨头软骨下骨折（subchonelinsufficiency fracture，SIF）的MRI脂肪抑制T2加权像表现，并评价其与保守治疗后临床疗效的相关性。（12例男性和25例女性;平均年龄55.8岁，范围22-78岁）。在髋关节疼痛发作后3个月内进行MRI检查。使用脂肪抑制T2加权成像，我们评估髋关节的软骨下骨（对应于T1加权图像上低信号带的上级区域）的强度，以及骨髓水肿、关节积液和带状病变的存在。然后，我们相关的强度与临床outcomes.ResultsThe髋关节的软骨下骨的强度分为三种类型的基础上，脂肪抑制T2加权图像：1型（21髋）显示高强度，2型（8髋）显示不均匀的强度，3型（11髋）显示低强度。2型髋关节从疼痛发作到MRI检查的平均时间显著长于1型髋关节。1型治愈率为86%，2型治愈率为75%，3型治愈率为18%。结论根据疼痛发作后3个月内脂肪抑制T2加权成像的软骨下密度，可将SIF分为3型。与1型和2型相比，3型SIF倾向于难以保守治疗。
ObjectiveOur aims were to investigate the imaging appearance of subchondral insufficiency fracture (SIF) of the femoral head based on fat-suppressed T2-weighted MRI, and evaluate its correlation with the clinical outcomes following conservative treatment.Materials and methodsWe retrospectively evaluated 40 hips in 37 patients with SIF of the femoral head (12 males and 25 females; mean age 55.8 years, range 22–78 years). MRI examinations were performed within 3 months after the onset of hip pain. Using fat-suppressed T2-weighted imaging, we evaluated the hips for the intensity of the subchondral bone (corresponding to the area superior to the low intensity band on T1-weighted images) as well as bone marrow edema, joint effusion, and presence of the band lesion. We then correlated the intensity of the subchondral bone with clinical outcomes.ResultsThe hips were classified into three types based on subchondral intensity on fat-suppressed T2-weighted images: type 1 (21 hips) showed high intensity, type 2 (eight hips) showed heterogeneous intensity, and type 3 (11 hips) showed low intensity. The mean period between pain onset and MRI examination was significantly longer for type 2 hips than for type 1. Healing rates were 86 % for type 1, 75 % for type 2, and 18 % for type 3.ConclusionSIF cases were classified into three types based on subchondral intensity on fat-suppressed T2-weighted imaging performed within 3 months after pain onset. Type 3 SIF tended to be intractable to conservative treatment compared to type 1 and type 2.