Knee pain and swelling with activity, evaluate for recurrent meniscal tear versus chondromalacia. MENISCI: The lateral meniscus appears intact. The body and posterior horn of the medial meniscus are not visualized. The anterior horn of the medial meniscus is diminutive.ARTICULAR CARTILAGE AND BONE: There is mild diffuse thinning of the articular cartilage of the lateral tibiofemoral compartment without full-thickness focal defects. There is diffuse thinning of the articular cartilage of the medial tibiofemoral compartment with small foci of full-thickness or near full-thickness cartilaginous defects (for example weightbearing portion of medial femoral condyle series 9, image 22 measuring 9 mm in AP dimension). There are full-thickness cartilage defects both within the median patellar eminence (series 4, image 12) as well as the medial aspect of the femoral trochlea with underlying reactive bone marrow signal changes. Bone marrow signal intensity is otherwise within normal limits.LIGAMENTS: The collateral and cruciate ligaments are intact. EXTENSOR MECHANISM: The extensor mechanism is intact.ADDITIONAL
1.Absence of the body and posterior horn of medial meniscus which may reflect a combination of postoperative and degenerative etiologies.2.Cartilaginous degenerative changes most pronounced in the medial tibiofemoral and patellofemoral compartments as described above.