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A. For sub-compartmental analysis, the cartilage of femur and tibia is divided into sub-compartments with regard to the anterior and posterior horns of the meniscus. The femoral condyle has 5 sub-compartments (F1, F2, F3, F4, and F5) and the tibial plateau has 3 sub-compartments (T1, T2, and T3). B. The articular cartilage is divided into the superficial zone and the deep zone. S: superficial zone; D: deep zone.
