Patello-Femoral With Reusable Instruments
AssigneeBiomet Sports Medicine, LLC
InventorWilliam MAXSON
Life of this patent
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Abstract
A system for repairing a cartilage defect. The system includes a riser block having a bone-engaging side that is a patient-specific negative of a patient's bone anatomy proximate to the cartilage defect. A drill guide-engaging side of the riser block is opposite to the bone-engaging side. A superior riser block guide hole is defined by the riser block and extends from the drill guide-engaging side to the bone-engaging side. An inferior riser block guide hole is defined by the riser block and extends from the drill guide-engaging side to the bone-engaging side.
Claims22
A system for repairing a cartilage defect comprising:
- a riser block including:
- a bone-engaging side that is a patient-specific negative of a patient's bone anatomy proximate to the cartilage defect;
- a drill guide-engaging side that is opposite to the bone-engaging side;
- a superior riser block guide hole defined by the riser block and extending from the drill guide-engaging side to the bone-engaging side;
- and an inferior riser block guide hole defined by the riser block and extending from the drill guide-engaging side to the bone-engaging side.
A system for repairing a cartilage defect comprising:
- a riser block including:
- a patient-specific bone-engaging side;
- a drill guide-engaging side that is opposite to the patient-specific bone-engaging side;
- a superior riser block guide hole;
- and an inferior riser block guide hole, both the superior and inferior riser block guide holes are defined by and extend through the riser block from the drill guide-engaging side to the patient-specific bone-engaging side;
- a drill guide including:
- an outer side;
- a riser-engaging side opposite to the outer side, the riser-engaging side is complementary to the drill guide-engaging side of the riser block;
- a superior drill guide hole;
- and an inferior drill guide hole, both of the superior and inferior drill guide holes extend through the riser block and are arranged to align with the superior and inferior riser block guide holes respectively when the drill guide is coupled to the riser block;
- and
- a reamer configured to be guided to the bone surface by the superior and inferior drill guide holes, and the superior and inferior riser block guide holes, to prepare the bone to receive an implant.
A method for repairing a cartilage defect, the method comprising:
- imaging a bone of a patient proximate to the cartilage defect;
- positioning a riser block on the bone proximate to the cartilage defect such that a patient-specific bone-engaging side of the riser block formed based on the imaging mates with the bone;
- positioning a drill guide such that a riser-engaging side of the drill guide abuts a drill guide-engaging side of the riser block, and such that superior and inferior drill guide holes defined by the drill guide are respectively aligned with superior and inferior riser block guide holes of the riser block;
- coupling the riser block and the drill guide together and to the bone with coupling members extending through the drill guide, through the riser block, and into the bone;
- inserting a reamer through the superior drill guide hole and the superior riser block guide hole to guide the reamer to a superior portion of the bone, and reaming the superior portion of the bone to receive an implant;
- inserting the reamer through the inferior drill guide hole and the inferior riser block guide hole to guide the reamer to a superior portion of the bone, and reaming the superior portion of the bone to receive the implant;
- and
- implanting the implant in the bone such that an articular surface of the implant is generally flush with surrounding cartilage.
Dependencies are inferred from the claim text.