Abstract #4626

Reversible Changes in knee articular cartilage after half marathon: an MRI T2* study in heathy amateur runners

Yanjing Zhang^1,2, Li Zhang^3,4, Wanzhen Yao^1,2, Siyu Dai^1,2,5,6, Dingbo Shu^1,2, Jianping Ding^2,5,7, and Mengxiao Liu⁸

¹Department of Radiology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China, ²Institute of Sport Medicine, Hangzhou Normal University, Hangzhou, China, ³Department of Radiology, The Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, China, ⁴National Clinical Research Center for Child Health, Hangzhou, China, ⁵School of Clinical Medicine, Hangzhou Normal University, Hangzhou, China, ⁶Faculty of Medicine, The Chinese University of Hong Kong, HongKong, China, ⁷1 Department of Radiology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China, ⁸MR scientific Marketing, Diagnostic Imaging, Siemens Healthineers Ltd, Shanghai, China

Synopsis

This research investigated the difference in T2* value of knee cartilage between amateur runners and non-exercisers, and examined the trends in the T2* value of knee cartilage in amateur runners before and after a half marathon. The results showed that the T2* value in lateral femorotibial joint of amateur runners was lower than non-exercisers. And the T2* value increased significantly after half-marathon running, and returned to the baseline level after 3 days. This indicates that long-term running may be beneficial to joint health; the effect of a half-marathon exercise on cartilage is reversible.

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