Method and device for joint replacement

1. A joint replacement device comprising:

an asymmetric spacer configured for positioning within an acetabulum socket, the spacer including:

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; and

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;

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.

2. The device of claim 1 , further comprising a lip that extends outwardly from the outer perimeter along the superior portion.

3. The device of claim 2 , wherein the lip includes an inner edge that is joined to the outer perimeter, 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.

4. The device of claim 3 , wherein the lip extension further includes a top surface and a bottom surface, and wherein the bottom surface is configured to at least partially abut a portion of the acetabulum socket when installed.

5. The device of claim 4 , wherein the lip is configured to be unsecured to the acetabulum socket.

6. The device of claim 4 , wherein the lip is configured to be secured to the acetabulum socket using a fastener.

7. The device of claim 1 , wherein the interior perimeter diameter ranges from about 30 millimeters to about 70 millimeters.

8. The device of claim 1 , wherein the inner perimeter is smaller in length relative to the outer perimeter.

9. The device of claim 1 , wherein the posterior limb has a greater width than the anterior limb.

10. The device of claim 1 , wherein the anterior limb has a width equal to the posterior limb width.

11. The device of claim 1 , wherein the inner surface and the outer surface have similar contours providing a uniform thickness.

12. The device of claim 1 , wherein the inner surface and the outer surface have dissimilar contours providing a varying thickness.

13. The device of claim 1 , wherein the thickness between the inner surface and the outer surface is about 2 millimeters to about 8 millimeters.

14. The device of claim 1 , wherein the interior perimeter diameter ranges from about 30 millimeters to about 70 millimeters.

15. 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.

16. 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.

17. The spacer of claim 16 , wherein the lip extension further includes a plurality of fastener apertures configured to receive a fastener for securing the lip to the acetabulum socket.