Bone protector, kit and method
First Claim
1. A method of performing total knee arthroplasty comprising:
- resecting a portion of the patella;
covering at least a portion of the patella after the patella has been resected; and
resecting a portion of the distal femur and proximal tibia after the patella has been resected and while the patella is covered.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical kit includes an orthopaedic implant, an orthropaedic trial and a bone protector. All three components have bone-contacting surfaces sized and shaped to be placed against a resected bone surface. The orthopaedic implant and trial are thicker than the bone protector. The bone protector has a flat bearing surface while the implant and trial have curved articulating surfaces. In use, the bone protector is temporarily mounted on the resected bone surface to cover and protect the resected bone surface while other bones of the joint are resected. A retractor can be placed against the bone protector and used as a lever to move other bones of the joint for greater access during surgery. The bone protector serves as the fulcrum of the lever and protects the resected bone from damage. The kit, bone protector and method should be useful in minimally invasive total joint arthroplasty.
48 Citations
34 Claims
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1. A method of performing total knee arthroplasty comprising:
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resecting a portion of the patella;
covering at least a portion of the patella after the patella has been resected; and
resecting a portion of the distal femur and proximal tibia after the patella has been resected and while the patella is covered. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12)
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9. A bone protector comprising:
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a bone-contacting surface and an opposite bearing surface; and
a mounting member on the bone-contacting surface for temporarily mounting the bone protector to a surface of a bone;
wherein the bone protector has a thickness between the bone-contacting surface and the bearing surface; and
wherein the bearing surface is substantially flat. - View Dependent Claims (10, 11, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A surgical kit for prosthetic implants for replacing portions of bones of a joint, the kit comprising:
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a first prosthetic implant component having a bone-contacting surface and an articulating surface;
a first prosthetic trial component having a bone-contacting surface and an articulating surface;
a bone protector having a bone-contacting surface and a bearing surface;
wherein the first prosthetic implant component, first prosthetic trial component and bone protector are all capable of being separately mounted to a portion of the same bone; and
wherein the bearing surface of the bone protector has a different shape than the articulating surfaces of the prosthetic implant component and prosthetic trial component. - View Dependent Claims (22, 23, 24)
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25. A surgical kit for prosthetic implants for replacing portions of bones of a joint, the kit comprising:
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a first prosthetic implant component having a bone-contacting surface, an articulating surface, and a thickness between the bone-contacting surface and the articulating surface;
a first prosthetic trial component having a bone-contacting surface, an articulating surface, and a thickness between the bone-contacting surface and the articulating surface;
a bone protector having a bone-contacting surface, a bearing surface, and a thickness between the bone-contacting surface and the bearing surface;
wherein the first prosthetic implant component, first prosthetic trial component and bone protector are all capable of being separately mounted to a portion of the same bone; and
wherein the thickness of the bone protector is less than the thickness of the first prosthetic implant component and less than the thickness of the first prosthetic trial component. - View Dependent Claims (26, 28, 29, 30)
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27. The kit of claim 27 wherein the thickness of the bone protector is about 1-2 mm.
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31. A surgical kit for prosthetic implants for replacing portions of the femur and patella of the knee joint, the kit comprising:
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a prosthetic patella implant component having a bone-contacting surface, a curved articulating surface and a thickness between the bone-contacting surface and the articulating surface;
a prosthetic patella trial component having a bone-contacting surface, a curved articulating surface and a thickness between the bone-contacting surface and the articulating surface;
a patella protector having a bone-contacting surface, a flat bearing surface and a thickness between the bone-contacting surface and the articulating surface;
wherein the prosthetic patella implant component, prosthetic patella trial component and patella protector are all capable of being separately mounted to a portion of the patella; and
wherein the thickness of the patella protector is less than the thickness of the prosthetic patella trial component and less than the thickness of the prosthetic patella implant. - View Dependent Claims (32, 33, 34)
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Specification