METHOD AND DEVICE FOR JOINT REPLACEMENT

1 . A method of joint replacement comprising:

forming one or more arthroscopy portals adjacent a hip joint that includes a femur and a pelvis;

inserting a guide wire through a portion of the femur to extend out of a femoral head of the femur;

securing a reamer blade to the guide wire;

reaming a femoral head outer surface at the end of the femoral head to at least one of access cancellous bone and remove damaged cartilage;

reaming an acetabulum outer surface of the acetabulum socket of the pelvis to at least one of access cancellous bone and remove damaged cartilage;

unsecuring the reamer blade from the guide wire; and

inserting a hemiarthroplasty cup between the femoral head outer surface and the acetabulum outer surface.

2 . A method of joint replacement comprising:

forming one or more arthroscopy portals adjacent a hip joint that includes a femur and a pelvis;

inserting a guide wire through a portion of the femur to extend out of a femoral head of the femur;

securing a reamer blade to the guide wire;

reaming a femoral head outer surface at the end of the femoral head to at least one of access cancellous bone and remove damaged cartilage;

reaming an acetabulum outer surface of the acetabulum socket of the pelvis to at least one of access cancellous bone and remove damaged cartilage;

unsecuring the reamer blade from the guide wire;

rotating a cannulated drill around the guide wire and through the femur;

inserting a cannulated fastener in place of the cannulated drill;

inserting a cup femoral head prosthesis adjacent to the femoral head outer surface;

securing the cup femoral head prosthesis to the femoral head outer surface using the cannulated fastener; and

inserting a hemiarthroplasty cup between the femoral head outer surface and the acetabulum outer surface.

3 . A method of joint replacement comprising:

forming one or more arthroscopy portals adjacent a hip joint that includes a femur and a pelvis;

inserting a guide wire through a portion of the femur to extend out of a femoral head of the femur;

securing a reamer blade to the guide wire;

reaming a femoral head outer surface at the end of the femoral head to at least one of access cancellous bone and remove damaged cartilage;

reaming an acetabulum outer surface of the acetabulum socket of the pelvis to at least one of access cancellous bone and remove damaged cartilage;

unsecuring the reamer blade from the guide wire;

rotating a cannulated drill around the guide wire and through the femur;

inserting a cannulated fastener in place of the cannulated drill;

inserting a cup femoral head prosthesis adjacent to the femoral head outer surface; and

securing the cup femoral head prosthesis to the femoral head outer surface using the cannulated fastener.

4 . A prosthesis comprising:

a hemiarthroplasty cup including:

an inner surface shaped and sized to accommodate a reamed or unreamed femoral head outer surface, and

an outer surface shaped and sized to accommodate a reamed or unreamed acetabulum outer surface of an acetabulum socket, wherein the hemiarthroplasty cup is configured to maintain allowance of articulation of the femoral head outer surface and the acetabulum socket relative to the hemiarthroplasty cup after implantation.

5 . A prosthesis comprising:

an at least partially hemispherical-shaped cup including an inner surface and an outer surface, wherein the inner surface is shaped and sized to accommodate a reamed femoral head outer surface of a femur, and wherein the outer surface is shaped and sized to accommodate at least one of a reamed or unreamed acetabulum outer surface of an acetabulum socket and an inner surface of a hemiarthroplasty cup;

a fastener securable to the femur for engagement with a portion of the hemispherical-shaped cup to provide securement of the hemispherical-shaped cup to the femoral head outer surface.

6 . A prosthesis comprising:

a cup-shaped portion including an inner surface and an outer surface, wherein the inner surface is shaped and sized to accommodate at least one of a reamed femoral head outer surface of a femur and a cup femoral head prosthesis, and wherein the outer surface is shaped and sized to accommodate a reamed or unreamed acetabulum outer surface of an acetabulum socket.

7 . The prosthesis of claim 4 , wherein the hemiarthroplasty cup is not artificially secured to the acetabulum socket.