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http://dx.doi.org/10.3348/kjr.2012.13.5.594

Comparison of MRI T2 Relaxation Changes of Knee Articular Cartilage before and after Running between Young and Old Amateur Athletes  

Cha, Jang Gyu (Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital)
Lee, Jae Chul (Department of Orthopedics, Soonchunhyang University College of Medicine, Seoul Hospital)
Kim, Hyun Joo (Department of Radiology, Soonchunhyang University College of Medicine, Seoul Hospital)
Han, Jong Kyu (Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital)
Lee, Eun Hye (Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital)
Kim, Yong Dai (Department of Statistics, College of Natural Sciences, Seoul National University)
Jeon, Chan Hong (Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University College of Medicine, Bucheon Hospital)
Publication Information
Korean Journal of Radiology / v.13, no.5, 2012 , pp. 594-601 More about this Journal
Abstract
Objective: To compare changes in T2 relaxation on magnetic resonance (MR) images of knee articular cartilage in younger and older amateur athletes before and after running. Materials and Methods: By using a 3.0-T MR imager, quantitative T2 maps of weight-bearing femoral and tibial articular cartilages in 10 younger and 10 older amateur athletes were acquired before, immediately after, and 2 hours after 30 minutes of running. Changes in global cartilage T2 signals of the medial and lateral condyles of the femur and tibia and regional cartilage T2 signals in the medial condyles of femoral and tibia in response to exercise were compared between the two age groups. Results: Changes in global cartilage T2 values after running did not differ significantly between the age groups. In terms of the depth variation, relatively higher T2 values in the older group than in the younger group were observed mainly in the superficial layers of the femoral and tibial cartilage (p < 0.05). Conclusion: Age-related cartilage changes may occur mainly in the superficial layer of cartilage where collagen matrix degeneration is primarily initiated. However, no trend is observed regarding a global T2 changes between the younger and older age groups in response to exercise.
Keywords
Knee joint; Cartilage; MR imaging; Aging;
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