Cartilage status in knees with recurrent patellar instability using magnetic resonance imaging T2 relaxation time value

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• 作者：Xiaodong Chen ; De Li ; Wei Wang ; Hanlong Xin…
• 关键词：Patellar instability ; Patellofemoral joint ; Cartilage ; Magnetic resonance imaging ; CT ; Arthroscopy
• 刊名：Knee Surgery, Sports Traumatology, Arthroscopy
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：23
• 期：8
• 页码：2292-2296
• 全文大小：486 KB
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• 作者单位：Xiaodong Chen (1)
  De Li (1)
  Wei Wang (1)
  Hanlong Xin (1)
  Yue Wang (1)
  Jianhua Wang (1)
  
  1. Department of Orthopaedic Surgery, Shanghai Jiao Tong University Xinhua Hospital, 1665# Kongjiang Rd, Shanghai, 200092, People’s Republic of China
  
• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Orthopedics
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1433-7347

文摘

Purpose 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). Methods 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. Results 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. Conclusions 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. Level of evidence III.