Asymmetric artificial knee joint

An artificial knee joint comprising:

• a bearing member comprising:
• a top surface that extends between an anterior edge and an opposing posterior edge;
• a lateral sulcus recessed into the top surface of the bearing member and having a concave shape, the lateral sulcus having a lateral sulcus point disposed at a maximally recessed location of the lateral sulcus;
• and
• a medial sulcus recessed into the top surface of the bearing member and having a concave shape, the medial sulcus having a medial sulcus point disposed at a maximally recessed location of the medial sulcus;
• and
• a femoral component having a medial condyle and a lateral condyle disposed on the medial sulcus and the lateral sulcus of the bearing member, respectively,
• wherein the lateral sulcus point of the lateral sulcus of the bearing member is positioned more forward toward the anterior edge than the medial sulcus point of the medial sulcus of the bearing member, and wherein when the femoral component is pivoted posterior to anterior on the bearing member, the lateral condyle moves more forward toward the anterior edge than the medial condyle and the medial sulcus of the bearing member and the medial condyle of the femoral component form a center of motion, and
• wherein a linear line extends between a point on the anterior edge and a point on the posterior edge and has an anterior-posterior (AP) length, the lateral sulcus point being disposed on the linear line at a distance from the anterior point that is between 10% and 25% of the AP length.

An artificial knee joint comprising:

• a bearing member having a top surface that extends between an anterior edge and an opposing posterior edge;
• a lateral sulcus recessed into the top surface of the bearing member and having a concave shape, a maximally recessed area of the lateral sulcus defining a lateral sulcus portion;
• a medial sulcus recessed into the top surface of the bearing member and having a concave shape, a maximally recessed area of the medial sulcus defining a medial sulcus portion;
• wherein the lateral sulcus portion of the lateral sulcus has an anterior side positioned more forward toward the anterior edge than an anterior side of the medial sulcus portion such that the medial sulcus is a center of motion, and wherein a linear line extends between a point on the anterior edge and a point on the posterior edge and has an anterior-posterior (AP) length, the lateral sulcus portion being disposed on the linear line at a distance from the anterior point that is between 10% and 25% of the AP length.