Cartilage status in knees with recurrent patellar instability using magnetic resonance imaging T2 relaxation time value
Cartilage status in knees with recurrent patellar instability using magnetic resonance imaging T2 relaxation time value
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DOI：
10.1007/s00167-014-3036-z
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发表时间：
2015-08-01
影响因子：
3.8
通讯作者：
Wang, Jianhua
中科院分区：
文献类型：
--
作者：
Chen, Xiaodong;Li, De;Wang, Jianhua
应用核磁共振成像(MRI)技术对113例复发性髌骨不稳定患者(不稳定组)和50例健康对照组(对照组)的髌骨状态进行分析。所有患者均接受了计算机断层扫描(CT)以测量髌股关节的解剖结构。同时，用MRI观察软骨状态，并测定其T2松弛时间值。比较不稳定组和对照组的这些参数的平均值。与对照组相比，不稳定组的CT图像显示出更大的解剖异常。经MRI检查，32例患者经关节镜确诊为软骨缺损者。在其他81例患者中，在中段(p=0.032)或中段(p=0.041)，髌骨不稳组的T2松弛时间值显著高于对照组(p=0.041)。核磁共振成像可以早期发现这些髌股关节内的软骨缺陷，使临床医生能够采取策略来延缓或预防软骨退变。
The purpose of the study was to analyse the patellar status in patients with recurrent patellar instability and in healthy controls using magnetic resonance imaging (MRI).One hundred and thirteen patients with patellar instability (patellar instability group) and 50 healthy controls (control group) were studied. All patients underwent computed tomography (CT) to measure the patellofemoral joint anatomy. Meanwhile, MRI was used to investigate cartilage status and to determine the T2 relaxation time value of the patellar cartilage plate. The mean values of these parameters for the patellar instability group and the control group were compared.The CT images of the patellar instability group revealed greatly abnormal anatomy of the patellofemoral joint compared with the control group. By MRI assessment, 32 patients were determined to have a cartilage defect, which was confirmed under arthroscopy. Among the other 81 patients, the T2 relaxation time value of the patellar instability group was significantly higher than that of the control group on the middle (p = 0.032) or medial sites (p = 0.041) of the patellar cartilage.The patellar instability group exhibits a higher risk of cartilage lesions with abnormal patellofemoral joint anatomy. MRI may enable early detection of these cartilage defects within the patellofemoral joint, enabling clinicians to adopt strategies to delay or prevent cartilage degeneration.III.