Torn Posterior Cruciate Ligament

Description

Centered within the intercondylar notch of the distal femur, the posterior cruciate ligament (PCL) is rendered as the thicker, more posterior of the cruciate pair, coursing from the lateral surface of the medial femoral condyle to the posterior intercondylar area of the tibia. Its torn fibers are highlighted at the point where the ligament normally crosses posterior to the anterior cruciate ligament (ACL), leaving an irregular, frayed gap between femur and tibia. Superiorly, the femoral condyles bracket the notch, while inferiorly the tibial plateau and the C-shaped medial and lateral menisci sit interposed between the articular surfaces. Bone and fibrocartilage textures remain anatomically faithful. A rupture is obvious. PCL morphology matters because it is the primary restraint to posterior tibial translation, and tear pattern influences both stability testing and reconstruction strategy. A midsubstance tear, as suggested by disruption within the notch, behaves differently from a tibial avulsion and correlates with the posterior drawer at 90 degrees flexion and the classic dashboard mechanism in motor vehicle trauma. Surgeons also plan around adjacent landmarks, including the posterior tibial “facet” for PCL insertion and the proximity of the popliteal neurovascular bundle during tibial tunnel placement. Small distances, high stakes. Use this illustration in orthopedic and sports medicine teaching when contrasting ACL versus PCL injury patterns, in anatomy lab manuals covering intra-articular knee ligaments and menisci, or in patient-facing print and digital materials explaining posterior cruciate ligament tears and reconstruction. Anatomical accuracy verified by SciePro's Medical Advisory Board.