Articular surface of medial femoral condyle

The articular surface of the medial femoral condyle is characterized by a complex three-dimensional geometry that is not perfectly spherical. In the sagittal plane, the posterior facet of the medial condyle can be approximated by a circular arc, but the inferior facet (weight-bearing surface) is consistently larger and less curved than the lateral condyle, with the "medial inferior circle" having a radius approximately 35% greater than other condylar circles. This results in a broader, flatter articular surface medially, which is important for load distribution and knee kinematics.

Morphometric studies show that the medial and lateral condyles are asymmetric in both curvature and surface area, with the medial condyle generally having a larger and more elongated articular surface.

The articular cartilage overlying the medial condyle varies in thickness, averaging around 1.7 mm, and is thinnest near the sulcus terminalis (the groove for the meniscus).