Definition
The lateral tibial condyle is the lateral weightbearing surface of the tibia that articulates with the corresponding lateral condyle of the femur.
Its unique structural features include a more convex surface then the concave medial tibial condyle (plateau). On its outer edges, the lateral collateral ligament attaches, as well as attachments for the lateral meniscus which serves as a cushion between the tibial and femoral condyles.
It articulates with the lateral condyle in a simple hinge type joint.
The function of the condyle is to provide a stable, wide platform which can distribute the high forces transmitted through the knee through the femoral condyle. Due to its relatively flat surface (as well as the flat surface of the medial tibial condyle) which doesn’t provide a lot of bony stability, it therefore relies on the strong ligamentous structures to provide stability to the knee
Common diseases include fractures to the condyle and arthritis. Although arthritic changes to the lateral tibial condyle occur less frequently then on the medial side, the lateral side is more prone to fractures then the medial condyle
Commonly used diagnostic procedures include plain radiographs and cat scans to evaluate fracture patterns
Arthritic changes to the lateral tibial condyle can be treated with a uniarthroplasty (one side), but most joint surgeons will perform a total knee arthroplasty with both isolated arthritis to the lateral side and global arthritis to the lateral and medial sides. Fractures must be fixed with plates and screws to restore the joint surface or arthritic changes will result
References
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