Ligaments of the Flexed Knee, Lateral View

Description

Seen in lateral profile with the knee flexed, the distal femur overlies the proximal tibia and the fibular head sits posterolateral to the tibial plateau, immediately inferior to the lateral femoral epicondyle. The fibular (lateral) collateral ligament runs as a cordlike band from the lateral epicondyle to the fibular head, separated from the lateral meniscus by the popliteus tendon as it courses inferomedially toward the posterior tibia. A capsular layer outlines the femorotibial and patellofemoral compartments, with articular cartilage capping the femoral condyle and tibial plateau at the joint line. Small but telling bony landmarks are readable. Flexion is not cosmetic here, it changes what you can teach and what a surgeon can reach: the lateral collateral ligament becomes easier to follow as a discrete extracapsular structure and its relationship to the fibular head clarifies why varus stress testing in slight flexion targets LCL integrity more cleanly than in full extension. This view also supports discussion of posterolateral corner injury patterns, where combined LCL and popliteus complex disruption produces rotational instability, and why the common fibular (peroneal) nerve, wrapping around the fibular neck just distal to the LCL insertion, demands attention during lateral approaches. Arthroscopists and sports surgeons recognize these intervals immediately. Use this plate to anchor lectures on knee stabilizers in gross anatomy and MSK modules, or to illustrate clinical chapters on lateral knee pain, varus laxity, and reconstruction graft placement at the lateral femoral epicondyle and fibular head. It also fits operative technique manuals describing lateral meniscus repair, posterolateral corner reconstructions, and safe dissection planes around the fibular head. Anatomical accuracy verified by SciePro's Medical Advisory Board.