Final answer:
The medial and lateral condyles are the parts of the distal epiphysis of the femur separated by the intercondylar fossa and contribute to the formation of the kneecap by providing the patellar surface.
Step-by-step explanation:
The parts of the distal epiphysis of the femur that are separated by the intercondylar fossa and form the patellar surface, which contributes to the knee joint, are the medial and lateral condyles. These condyles articulate with the tibia to form the knee joint and also provide a smooth surface for the patella, or kneecap, to glide upon.
The intercondylar fossa is a deep depression located on the posterior side of the femur, separating these two condyles. The lateral epicondyle and medial epicondyle are found on the outer, lateral, and medial sides of the respective condyles and serve as attachment points for muscles and ligaments.