Quantitative MRI of the ACL-injured and reconstructed knee

MRI has led to significant advancement in diagnosis of soft tissue injuries. Previous technology has been limited to morphologic diagnosis and static images. Recent advances allow high-resolution images with shorter acquisition time and compositional analysis of tissues. Static, unloaded, and morphologic examination became dynamic, loaded, and biochemical analyses. This article focuses on the use of advanced MRI techniques in the evaluation of anterior cruciate ligament (ACL) injury and its surgical outcome. Up-to-date applications of quantitative MRI and kinematic analysis of ACL injuries and reconstructed knees are reviewed.