Proximal end of the tibia (tibial plateau) articulates with the femoral condyles. notch. Separating these concavities is a rough area where the cruciate ligaments attach: this area is commonly called the tibial spine or the intercodylar eminence. Patella largest sesamoid bone in the body: lateral aspect of the patella wider than the medial aspect, tracking within the femoral groove depends on the pull of the quads and patellar tendon, the depth of the. Patella articulates between the concavity provided by the femoral condyles (femoral groove). Femoral groove and the shape of the patella: underside of the patella is not flat raised in the centre and sits in the pf groove. The knee joint actually has 3 articulations: the femur and tibia, the femur and patella and the tibia and femur. Articular facet of the tibia and to the joint capsule, by the coronary ligaments. Semimembranosus attaches to the medial meniscus pulls it back to keep it in position.