Lateral Tibial Plateau

condylus lateralis tibiae facies articularis

The lateral tibial plateau is the convex or slightly flat articular surface of the lateral tibial condyle, smaller than the medial plateau and covered by articular cartilage and the lateral meniscus. Unlike the concave medial plateau, its slight convexity combined with lateral meniscal mobility allows the greater translation and rotation of the lateral tibiofemoral compartment during knee flexion and in the screw-home mechanism. It bears approximately 30-40% of tibiofemoral load in neutral alignment.

Region: Knee

Clinical Relevance

Clinical Notes

Lateral tibial plateau fractures (Schatzker types I-III) are the most common plateau fracture pattern, from valgus loading with or without axial compression. Type I is a simple split, type II a split-depression, and type III a pure central depression requiring elevation and bone grafting when depression exceeds 3 mm. MRI assessment of associated lateral meniscal tears and anterolateral corner injuries is essential. Arthroscopically assisted reduction allows simultaneous articular surface reduction and meniscal assessment.

Pathology

Common Injuries & Conditions

Lateral Tibial Plateau Depression Fracture

Schatzker type III central lateral plateau depression from axial load transmits the lateral femoral condyle into the subchondral bone, depressing the articular surface without peripheral wall disruption; managed by percutaneous or arthroscopically assisted elevation with bone graft and buttress plating when depression exceeds 3 mm.