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Master Thesis

Évaluation de l’impact de l’ultra trail sur l’articulation du genou par IRM : une étude pilote

Abstract : Off-road mountain running or “trail running” is popular and ultra-marathon trails are gaining in popularity worldwide. These endurance runs involve a combination of specific physiological and mechanical constraints, linked particularly to the duration of exercise (several hours) and the environment (elevation changes, off-road terrain) and raises new questions regarding the osteoarticular impact on the knees. The purpose was to quantify the changes in MRI T2 relaxation times of knee articular cartilage immediately after and one month after an ultra-trail run and determine the consequences of regular practice of this type of race on the cartilage and menisci. 20 participants in a 55 km race involving total elevation changes of 2600 metres had 1,5T knee MRI prior to the race (V0), immediately after the race (V1) and one month after the race (V2). T2 measurements were significantly increased in V1 from V0 and remained so one month after the race (V2), despite a significant reduction from V1. Morphological sequences revealed that 65% had cartilage damage and 65% meniscal damage. Only one subject (5%) presented no anomaly whatsoever. Damage appeared to be stable between the assessments. Ultra-trail running leads to damage in the knee cartilage ultrastructure, which persists for at least one month after the event. These modifications are similar to those found in the early stages of osteoarthritic pathogenesis and can have severe consequences for the knee. Furthermore, regular ultra-trail runners present more low-grade cartilage and meniscus lesions than the general public, but also than marathon runners of a similar age.
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Master Thesis
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Contributor : Jean-Hugues Morneau Connect in order to contact the contributor
Submitted on : Monday, March 29, 2021 - 11:04:27 AM
Last modification on : Wednesday, March 31, 2021 - 3:21:43 AM
Long-term archiving on: : Wednesday, June 30, 2021 - 6:19:19 PM


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  • HAL Id : dumas-03184047, version 1


Thibault Della Rosa. Évaluation de l’impact de l’ultra trail sur l’articulation du genou par IRM : une étude pilote. Médecine humaine et pathologie. 2021. ⟨dumas-03184047⟩



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