US2014031948A1PendingUtilityA1

Method and device for joint replacement

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Individually held — no corporate assignee on recordPriority: Jul 26, 2012Filed: Jul 17, 2013Published: Jan 30, 2014
Est. expiryJul 26, 2032(~6 yrs left)· nominal 20-yr term from priority
Inventors:Patrick M. Birmingham
A61F 2002/4635A61F 2/32A61F 2002/3208A61F 2/3603A61B 17/1664A61B 17/175A61F 2002/30754A61B 17/00234A61B 17/1666A61B 17/1668A61B 17/1746A61B 17/1721A61B 17/742A61F 2002/3233A61F 2002/30406A61F 2002/30405A61B 17/1742
45
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Claims

Abstract

A prosthesis including 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.

Claims

exact text as granted — not AI-modified
We claim: 
     
         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.

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