Provisional orthopedic implant and recutting instrument guide
First Claim
1. A system for implanting an orthopedic prosthesis on a resected surface of a bone using a surgical tool, the resected surface including a posterior cut surface and a chamfer cut surface, said system comprising:
- a first prosthetic component and a second prosthetic component, said first and second prosthetic components having differently sized configurations;
a provisional component removably mountable on the bone, said provisional component having a configuration that is substantially similar to said first prosthetic component and has a predefined correspondence to said second prosthetic component;
at least one referencing element disposed on said provisional component wherein, when said provisional component is mounted on the bone, said at least one referencing element defines at least one reference point on the bone; and
an instrument guide having a substantially planar base surface configured to abut a portion of the resected surface of the bone, said instrument guide including at least one positioning element alignable with the at least one reference point, said instrument guide defining at least one guide feature configured to receive the surgical tool, wherein when said positioning element is aligned with the reference point said guide feature is positioned to guide the surgical tool received therein to cut the posterior surface of the bone.
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Accused Products
Abstract
A provisional component for use with differently sized first and second prosthetic orthopedic components. The provisional component has a configuration which is substantially similar to the first prosthetic component and has a predefined correspondence to the second prosthetic component. The provisional component is mounted on a bone to assess the fit of the first prosthetic component. The provisional component includes a referencing element for defining a reference point on the bone if the fit of the provisional component indicates that the second prosthetic component should be used. An instrument guide is aligned with the reference point and used to properly position a surgical instrument to prepare the bone to receive the second prosthetic component. The provisional and prosthetic components may all be femoral components which have an articulating surface defining a single condylar-shaped projection.
109 Citations
17 Claims
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1. A system for implanting an orthopedic prosthesis on a resected surface of a bone using a surgical tool, the resected surface including a posterior cut surface and a chamfer cut surface, said system comprising:
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a first prosthetic component and a second prosthetic component, said first and second prosthetic components having differently sized configurations; a provisional component removably mountable on the bone, said provisional component having a configuration that is substantially similar to said first prosthetic component and has a predefined correspondence to said second prosthetic component; at least one referencing element disposed on said provisional component wherein, when said provisional component is mounted on the bone, said at least one referencing element defines at least one reference point on the bone; and an instrument guide having a substantially planar base surface configured to abut a portion of the resected surface of the bone, said instrument guide including at least one positioning element alignable with the at least one reference point, said instrument guide defining at least one guide feature configured to receive the surgical tool, wherein when said positioning element is aligned with the reference point said guide feature is positioned to guide the surgical tool received therein to cut the posterior surface of the bone. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for trialing an orthopedic prosthesis on the surface of a resected bone and, if necessary, revising the surface of the resected bone with a surgical tool, the system comprising:
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a provisional component removably mountable on the surface of the resected bone, said provisional component having a passage extending therethrough, said passage defining a reference point on the resected bone; a fastener configured to extend through said passage and into the bone, said fastener marking said reference point, said fastener configured to permit said provisional component to be removed from the bone while said fastener is secured to the bone; and an instrument guide having a base surface configured to abut a portion of the surface of the resected bone, said instrument guide having a guide feature extending therethrough and configured to receive the surgical tool, said instrument guide including an opening extending therethrough, said opening configured to receive said fastener therethrough, whereby with said provisional component removed from the bone said instrument guide is positioned directly on the surface of the bone by inserting said fastener through said opening, when said fastener extends through said opening said guide feature is configured to allow the surgical tool to revise the surface of the bone. - View Dependent Claims (9, 10, 11, 12)
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13. A system for trialing an orthopedic prosthesis on the surface of a resected bone and, if necessary, revising the surface of the resected bone with a surgical tool, the system comprising:
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a provisional component removably mountable on the resected bone, said provisional component including a reference means for providing a reference relative to the bone; a cut guide mountable directly on the resected bone, said cut guide including a guide feature configured to receive the surgical tool therethrough, said cut guide including positioning means for positioning said cut guide relative to said bone; and an alignment means engageable with said reference means and the bone to define said reference, said alignment means configured to permit the removal of said provisional component from the bone and said alignment means while said alignment means is engaged to said bone, said alignment means engageable with said positioning means after said provisional component is removed from the bone to align said cut guide relative to said reference. - View Dependent Claims (14, 15, 16, 17)
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Specification