System and method for joint resurface repair
First Claim
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1. An implant system, comprising:
- a reamer comprising a shaft and at least one cutting surface extending radially outwardly from said shaft, wherein said reamer is configured to rotate around a longitudinal axis of said shaft to define an excision site having a generally circular cross-section; and
a post comprising a threaded portion configured to engage bone beneath a patient'"'"'s articular surface;
an implant configured to be received in said excision site, said implant having a generally circular outer perimeter corresponding to said generally circular excision site defined by said reamer, wherein said generally circular outer perimeter defines an outer bound of a continuous load bearing surface that substantially matches at least one curvature of said patient'"'"'s articular surface; and
a fixation element configured to couple said post to said implant, wherein said fixation element is further configured to permit said implant to rotate with respect to said post.
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Abstract
A system for positioning an element relative to an articular surface. An embodiment of the system may include a first element having a positional reference relative to an articular surface. The system may further include a second element capable of indicating the positional reference of the first element relative to said articular surface. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.
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Citations
29 Claims
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1. An implant system, comprising:
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a reamer comprising a shaft and at least one cutting surface extending radially outwardly from said shaft, wherein said reamer is configured to rotate around a longitudinal axis of said shaft to define an excision site having a generally circular cross-section; and a post comprising a threaded portion configured to engage bone beneath a patient'"'"'s articular surface; an implant configured to be received in said excision site, said implant having a generally circular outer perimeter corresponding to said generally circular excision site defined by said reamer, wherein said generally circular outer perimeter defines an outer bound of a continuous load bearing surface that substantially matches at least one curvature of said patient'"'"'s articular surface; and a fixation element configured to couple said post to said implant, wherein said fixation element is further configured to permit said implant to rotate with respect to said post. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An implant system, comprising:
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a reamer comprising a shaft and at least one cutting surface extending radially outwardly from said shaft, wherein said reamer is configured to rotate around a longitudinal axis of said shaft to define an excision site having a generally circular cross-section; an implant configured to be received in said excision site, said implant having a generally circular cross-section perimeter corresponding to said generally circular excision site defined by said reamer, wherein said generally circular perimeter defines an outer bound of a continuous a load bearing surface that substantially matches at least one curvature of a patient'"'"'s articular surface, said implant further comprising a first fixation element coupled to a bottom surface; and a post comprising a second fixation element configured to rotatably couple said post to said first fixation element of said implant, said post configured to extend outwardly from said implant and configured to engage bone beneath said patient'"'"'s articular surface; wherein implant is configured to be rotated to a predetermined alignment with respect to said articular surface before said implant is secured to said post. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification