Pain in left knee. Please assess lateral structures including biceps and LCL. Injury was in September. MENISCI: There is a complex tear of the lateral meniscus with branching signal abnormality in the posterior horn of the meniscus extending to the tibial articular surface, as well as a defect within the superior fibers of the posterior body of the meniscus and what we suspect is a displaced fragment between the posterior horn and popliteal tendon. This tear also extends horizontally to involve the body and anterior horn, with extension to the tibial articular surface. The medial meniscus is intact.ARTICULAR CARTILAGE AND BONE: Mild bone marrow edema is present at the lateral aspect of the proximal fibula. We see no fluid-filled cartilage defect. An ossific density seen on the recent radiograph adjacent to the proximal fibular tip may either represent a subacute avulsion fracture fragment or posttraumatic heterotopic ossification, but is not clearly visualized on this MRI study. LIGAMENTS: There is thickening and increased signal intensity in the distal half of the anterior cruciate ligament, likely representing subacute full-thickness rupture. The posterior cruciate ligament and medial collateral ligament are intact. There is thickening of the distal biceps femoris tendon and intermediate signal intensity separating the distal fibers of the tendon and lateral collateral ligament proper from the fibular head. These findings are compatible with a partial thickness tear/full-thickness tear with interposed granulation tissue. The iliotibial band is intact.EXTENSOR MECHANISM: No significant abnormality noted.
1.No comparison studies have been submitted to Poiesis.2.Complete tear of the lateral meniscus, as described above.3.ACL tear.4.Findings suggest prior injury to the biceps femoris tendon and lateral collateral ligament ligament, either representing a partial-thickness tear, or more likely a healing full-thickness tear.