Knee Injury - Torn Meniscus (Cartilage) with Arthroscopic Surgery. This medical animation begins with an orientation of the knee joint, the medial and lateral meniscus, and the free-floating cartilage in the joint space. Prior to surgery, the joint is prepared by filling it with fluid. Afterwards and arthroscope and a surgical tool are inserted to visualize and repair the torn meniscal cartilage, respectively. Contact Medical Legal Art at 800-338-5954 to receive a free custom animation proposal.