Torn Lateral Collateral Ligament, Anterior View

Description

Anteriorly, the distal femur and proximal tibia frame the knee joint with the patella seated within the quadriceps tendon and aligned over the trochlear groove. Along the lateral side, the lateral collateral ligament (fibular collateral ligament, ligamentum collaterale fibulare) runs from the lateral femoral epicondyle inferiorly to the fibular head, and the illustration emphasizes a jagged discontinuity within this fibrous band consistent with traumatic rupture. The torn ends retract slightly, opening a gap lateral to the joint line and anterior to the posterolateral corner structures that sit deeper and more posterior. Varus instability lives here. An isolated LCL tear is uncommon in practice and often accompanies injury to the posterolateral corner, so this anterior perspective helps teach why a positive varus stress test at 30 degrees flexion points to LCL disruption, while persistent laxity in full extension raises concern for concurrent cruciate or capsular injury. Surgical planning also benefits from the clear lateral landmarks: the lateral femoral epicondyle for femoral fixation and the fibular head as the distal attachment, with attention to the common fibular (peroneal) nerve as it courses around the fibular neck just posterior and inferior to the insertion. Use this artwork in orthopedic and sports medicine lectures on knee ligament trauma, in anatomy labs when contrasting medial collateral ligament morphology with the cord-like lateral collateral ligament, or in patient-facing education explaining lateral knee pain after a varus or hyperextension mechanism. It also suits operative technique manuals describing LCL reconstruction tunnels and graft orientation relative to the lateral joint line and patellofemoral compartment. Anatomical accuracy verified by SciePro's Medical Advisory Board.