A method is provided for delivering an implant for replacing a portion of an articular surface. The method may include forming a socket in an articulating feature that is capable of moving relative to the articular surface. An implant may be placed in the socket and the articulating feature may be m
A method is provided for delivering an implant for replacing a portion of an articular surface. The method may include forming a socket in an articulating feature that is capable of moving relative to the articular surface. An implant may be placed in the socket and the articulating feature may be moved relative to the articular surface to generally align the socket with an implant site formed in the articular surface. The implant may be transferred from the socket into the implant site.
대표청구항▼
1. A system for repairing a joint including a first and a second bone having at least a first and a second articular surface, respectively, said system comprising: a drill guide comprising: a locating feature configured to be disposed on said first articular surface proximate to a defect on said fir
1. A system for repairing a joint including a first and a second bone having at least a first and a second articular surface, respectively, said system comprising: a drill guide comprising: a locating feature configured to be disposed on said first articular surface proximate to a defect on said first articular surface;a drill bushing defining a working axis extending through said locating feature; andan arm co-axially aligning said locating feature and said drill bushing;a drill bit configured to be received at least partially through said drill bushing along said working axis to drill a passage through said first bone and provide an opening on said first articular surface about said defect;a tether configured to be partially disposed within said passage in said first bone;a reamer comprising a shaft and a cutter configured to excise an implant site in a portion of said first articular surface about said defect having a diameter larger than said passage;an implant configured to be at least partially received in said implant site via said tether extending through said passage in said first bone, wherein said implant comprises an implant body and a load bearing surface disposed about a first end of said implant body, said load bearing surface having a contour substantially corresponding to a contour of said portion of said first articular surface about said defect. 2. The system of claim 1, wherein said reamer is configured to be removably coupled to said drive shaft extending through said passage. 3. The system of claim 1, wherein said entire implant is received within said implant site such that said load bearing surface is substantially flush with said surrounding first articular surface. 4. The system of claim 1, wherein said implant comprises a generally circular cross-sectional shape. 5. The system of claim 4, wherein said implant is axially symmetrical. 6. The system of claim 4, wherein said implant body further comprises a generally cylindrical implant body wherein said load bearing surface is disposed about a first end of said implant bodywherein said implant further includes a proximal end disposed generally about a second end of said implant body generally opposite said first end, said proximal end having a generally tapered profile. 7. The system of claim 6, wherein said load bearing surface is orientated at an angle relative to a longitudinal axis of said implant body such that said load bearing surface has a generally elliptical shape. 8. The system of claim 7, wherein said angular relationship between said load bearing surface and said longitudinal axis of said implant body is less than 45 degrees. 9. The system of claim 7, wherein said angular relationship between said load bearing surface and said longitudinal axis of said implant body is between 45 degrees and 90degrees. 10. The system of claim 7, wherein said angular relationship between said load bearing surface and said longitudinal axis of said implant body is about 60 degrees. 11. The system of claim 1, wherein said implant comprises an oval cross-sectional shape. 12. The system of claim 1, further comprising a relieved edge around a perimeter of said load bearing surface of said implant. 13. The system of claim 1, further comprising a plurality of implant body grooves on an exterior surface of an implant body of said implant. 14. The system of claim 13, further comprising bone cement configured to be disposed in said implant site and within said plurality of implant body grooves in said implant body. 15. The system of claim 13, wherein said plurality of implant body grooves further include an undercut region. 16. The system of claim 1, wherein a proximal end of said implant generally opposite said load bearing surface comprises a plurality of proximal end grooves. 17. The system of claim 16, wherein said plurality of proximal end grooves further include an undercut region. 18. The system of claim 1, further comprising an excision device configured to form a socket in an articulating feature associated with said second articular surface of said second bone, wherein said socket is exposed relative to said first articular surface of said first bone when in a first position and is generally aligned with implant site when in a second position. 19. The system of claim 1, wherein said reamer is configured to form a socket in said second articular surface. 20. The system of claim 1, wherein at least a portion of said reamer is further configured to be coupled to said tether and configured to be conveyed to said first articular surface by said tether. 21. The system of claim 20, wherein said cutter is configured to be coupled to said tether. 22. The system of claim 1, wherein said reamer comprises an expanding cutter. 23. The system of claim 1, wherein said shaft includes a cannulated shaft configured to receive a portion of said tether. 24. The system of claim 23, wherein said tether is disposed within said cannulated shaft and is configured to convey said cutter to a distal end of said shaft. 25. The system of claim 23, wherein said tether is disposed within said cannulated shaft and is configured to convey said implant to said implant site. 26. The system of claim 1, wherein said load bearing surface of said implant is generally defined by a first curve and a second curve disposed generally perpendicularly to said first curve. 27. A method of replacing a portion an articular surface of a joint including a first and a second bone having at least a first and a second articular surface, respectively, said method comprising: excising an implant site in a portion of said articular surface of said first bone;excising a socket in an articular surface of said second bone adjacent to said first bone;disposing at least a portion of an implant within said socket, wherein said implant comprises an implant body and a load bearing surface disposed about a first end of said implant body, said load bearing surface having a contour substantially corresponding to a contour of said portion of said articular surface of said first bone;articulating said first bone and said second bone from a first position, wherein said socket is exposed relative to said articular surface of said first bone and is configured to receive said implant, to a second position, wherein said socket is generally aligned with said implant site; and transferring said implant from said socket at least partially into said implant site.
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