54-year-old male with left knee pain, rule out tendon tears MENISCI: The lateral meniscus is intact. There is a complex tear at the root posterior horn junction of the medial meniscus with radial and longitudinal components. There is mild intrasubstance signal within the body of the medial meniscus, which may represent mucoid degeneration, without a discrete tear evident. The anterior horn of the medial meniscus is intact.ARTICULAR CARTILAGE AND BONE: There is mild edema within the posterior aspect of the medial tibial plateau immediately adjacent to the torn medial meniscus. There is diffuse thinning of the articular cartilage in the medial compartment without full-thickness cartilage loss. The articular cartilage in the lateral compartment is intact. Small tricompartment osteophytes are present. There is a subchondral cyst and edema along the lateral aspect of the lateral patellar facet with overlying partial thickness cartilage loss, raising the possibility of patellar instability, however no kissing contusion is seen within the medial femoral condyle. In addition, there is edema within the superior lateral infrapatellar fat pad with mild increased signal within the patellar tendon origin. The tibial tubercle trochlear groove (TTTG) distance is 20 mm, however there is no evidence of trochlear dysplasia. There is patella alta with an Insall-Salvati ratio of 1.45.LIGAMENTS: ACL and PCL are intact. Edema surrounds the MCL, which may indicated grade 1 sprain. The lateral collateral ligament complex is intact.EXTENSOR MECHANISM: Mildly increased signal within the patellar tendon origin as above. The quadriceps tendon is intact.ADDITIONAL
1.Complex tear at the medial meniscal root posterior horn junction.2.Findings suggestive of patellar instability.3.Grade 1 sprain of the MCL.4.Mild osteoarthritis.