Medial condyle of femur
The medial condyle is one of the two projections on the lower extremity of femur, the other being the lateral condyle.

The medial condyle is larger than the lateral (outer) condyle due to more weight bearing caused by the centre of mass being medial to the knee. On the posterior surface of the condyle the linea aspera (a ridge with two lips: medial and lateral; running down the posterior shaft of the femur) turns into the medial and  lateral supracondylar ridges, respectively. The outermost protrusion on the medial surface of the medial condyle is referred to as the "medial epicondyle" and can be palpated by running fingers medially from the patella with the knee in flexion.
It is important  to take into consideration the difference in the length of the condyles in a cross section to better understand the geometry of the knee. The medial femoral condyle has an extra segment which is the cause for the passive rotation of the knee joint.

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Bones of the lower limb
Femur