RT Journal A1 Milewski, Matthew D. A1 Sanders, Timothy G. A1 Miller, Mark D. T1 MRI-Arthroscopy Correlation: The Knee JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2011 FD September 21 VO 93 IS 18 SP 1735 OP 1745 DO 10.2106/JBJS.9318icl UL http://dx.doi.org/10.2106/JBJS.9318icl AB The knee was the first joint to be examined with arthroscopy, and many of the fundamental principles of arthroscopy of all joints were originally developed for the knee. Although knee arthroscopy had its roots in Japan and Europe, it became popular in the United States in the 1960s, and substantial progress has been made over the past five decades1. Knee arthroscopy has become the most common orthopaedic procedure performed in the United States2. Techniques have evolved such that a wide range of pathological conditions of the knee can be addressed arthroscopically, such as meniscal surgery, anterior cruciate ligament (ACL) reconstruction, articular cartilage restoration procedures, and removal of intra-articular pigmented villonodular synovitis.