Changes on magnetic resonance tomography in the knee joints of marathon runners: a 10-year longitudinal study.

Objective: The aim of the study was to evaluate long-term damage in the internal structures of the knee joints of recreational long-distance runners.

Materials And Methods: Ten years after their participation in a baseline study concerning their knee joints, seven long-distance runners and one who had given up long-distance running were invited to participate in a repeat magnetic resonance imaging (MRI) investigation. The same evaluation criteria and the same technical equipment were used, and the results of the two investigations were compared.