The association between objectively measured physical activity and knee structural change using MRI

Objectives This study describes the longitudinal association between objectively assessed physical activity (PA) and knee structural change measured using MRI. Methods 405 community-dwelling adults aged 51–81 years were measured at baseline and approximately 2.7 years later. MRI of the right knee at baseline and follow-up was performed to evaluate bone marrow lesions (BMLs), meniscal pathology, cartilage defects, and cartilage volume. PA was...