a. Medial patellar retinaculum b. Patellar tendon c. Quadriceps tendon d. Trochlear groove cartilage e. Hoffa's fat pad f. Anterior root attachment of medial meniscus g. Iliotibial band h. Anterior horn of lateral meniscus i. Proximal attachment of posterior cruciate ligament j. Lateral tibial plateau cartilage k. Medial collateral ligament (partially torn in this patient) l. Medial tibial spine m. Body of lateral meniscus n. Body of medial meniscus o. Popliteus tendon insertion p. Anterior cruciate ligament q. Lateral femoral condyle cartilage r. Posterior root attachment of medial meniscus s. Fibular collateral ligament t. Posterior horn of medial meniscus u. Biceps femoris distal insertion v. Popliteus muscle w. Fibular head x. Medial head gastrocnemius y. Popliteal artery z. Common peroneal nerve.