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Abstract #0829

Effect of Tear of the Medial Meniscus on T2 Relaxation Time of Articular Cartilage

Risto Ojala1, Antero Saviluoto1, Ilkka Hannila1, Marianne Haapea1, Osmo Tervonen1,2, Miika T. Nieminen1,3

1Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland; 2Department of Diagnostic Radiology, University of Oulu, Oulu, Finland; 3Department of Medical Technology, University of Oulu, Oulu, Finland

Meniscal tears are known to increase the risk of osteoarthritis (OA). To assess whether they influence the composition and structure of articular cartilage, T2 relaxation time of medial weight-bearing tibio-femoral cartilage was measured and compared between 20 patients with a tear in medial meniscus and 20 asymptomatic controls. A tear in medial meniscus resulted in significantly longer T2 values in most of the superficial and deep load-bearing medial femoro-tibial cartilage when compared to controls. T2 mapping may provide a sensitive tool to detect early signs of OA.