Method and device for joint replacement

An asymmetrically-shaped spacer configured for positioning within an acetabulum socket, the spacer comprising:

• an inner surface configured to accommodate at least one of a portion of an outer surface of a femoral head of a femur and a prosthetic secured to the femoral head;
• an outer surface configured to accommodate at least one of a portion of an outer surface of an acetabulum socket and a prosthetic secured to a pelvis, wherein the inner surface and outer surface each have a circular curvilinear shape and together include an inner perimeter and an outer perimeter, and wherein the inner perimeter is joined to the outer perimeter to form a posterior limb and an anterior limb;
• an interior perimeter diameter that extends between opposite sides of the inner perimeter;
• a posterior portion, an anterior portion, and a superior portion formed from the inner surface and the outer surface, wherein the superior portion further includes a posterior superior portion and an anterior superior portion;
• and
• a lip that extends outwardly from the outer perimeter along the superior portion, wherein the lip includes an inner edge that is joined to the outer perimeter, and wherein the lip extends radially from and along the outer perimeter forming a lip extension that terminates along a lip outer edge, a lip first side edge, and a lip second side edge;
• wherein the inner perimeter and the outer perimeter are discontinuous, thereby providing a gap between the posterior limb and the anterior limb that leads to an opening configured to allow the passage of a ligament therethrough;
• and
• wherein the opening extends through the inner and outer surfaces of the spacer and is asymmetrically positioned relative to the lip such that a center of the opening is offset from a centerline of the lip.

An asymmetrically-shaped spacer configured for positioning within an acetabulum socket, the spacer comprising:

• an inner surface configured to accommodate at least one of a portion of an outer surface of a femoral head of a femur and a prosthetic secured to the femoral head;
• an outer surface configured to accommodate at least one of a portion of an outer surface of an acetabulum socket and a prosthetic secured to a pelvis, wherein the inner surface and outer surface each have a circular curvilinear shape and together include an inner perimeter and an outer perimeter, and wherein the inner perimeter is joined to the outer perimeter to form a posterior limb and an anterior limb;
• an interior perimeter diameter that extends between opposite sides of the inner perimeter;
• a posterior portion, an anterior portion, and a superior portion formed from the inner surface and the outer surface, wherein the superior portion further includes a posterior superior portion and an anterior superior portion;
• and
• a lip that extends outwardly from the outer perimeter along the superior portion, wherein the lip includes an inner edge that is joined to the outer perimeter, and wherein the lip extends radially from and along the outer perimeter forming a lip extension that terminates along a lip outer edge, a lip first side edge, and a lip second side edge;
• wherein the inner perimeter and the outer perimeter are discontinuous, thereby providing a gap between the posterior limb and the anterior limb that leads to an opening configured to allow the passage of a ligament therethrough;
• and
• wherein the opening extends through the inner and outer surfaces of the spacer and is asymmetrically positioned such that a center of the opening is offset from a centerline of the spacer.