Facets
The superior articular surface presents two smooth articular facets.
- The medial facet, oval in shape, is slightly concave from side to side, and from before backward.
- The lateral, nearly circular, is concave from side to side, but slightly convex from before backward, especially at its posterior part, where it is prolonged on to the posterior surface for a short distance.
The central portions of these facets articulate with the condyles of the femur, while their peripheral portions support the menisci of the knee joint, which here intervene between the two bones.
Read more about this topic: Upper Extremity Of Tibia