Method and apparatus for pre-forming a high tibial osteotomy
First Claim
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1. A method of implanting an osteotomy implant at an osteotomy site, the method comprising:
- forming a cut in bone to create an osteotomy site with a first bone surface on a first side of the cut and a second bone surface on a second side of the cut;
providing or obtaining a pre-assembled osteotomy implant comprising a first part, a second part, and a hinge to facilitate compression or expansion of the osteotomy implant, wherein the first and second parts of the osteotomy implant are non-removably joined via the hinge;
comparing a width of the pre-assembled osteotomy implant to a width of the osteotomy site;
if the width of the pre-assembled osteotomy implant is wider than the width of the osteotomy site, compressing the implant along the hinge to decrease the width of the osteotomy implant;
if the width of the pre-assembled osteotomy implant is narrower than the width of the osteotomy site, expanding the implant along the hinge to increase the width of the osteotomy implant; and
implanting the pre-assembled osteotomy implant into the osteotomy site so that the pre-assembled osteotomy implant engages the first and second bone surfaces of the osteotomy site; and
moving an adjustable member that engages the first and second parts of the osteotomy implant to move the first and second parts relative to each other and thereby increase or decrease the width of the osteotomy implant.
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Abstract
An osteotomy implant including a porous portion, a solid portion, and a hinge portion. The porous portion includes a first part and a second part that defines a clearance therebetween. A solid portion abuts the porous portion. A hinge portion of the solid portion is coupled to the first part and the second part. The hinge portion is configured to enable the implant to be changed from a first configuration to a second configuration.
127 Citations
14 Claims
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1. A method of implanting an osteotomy implant at an osteotomy site, the method comprising:
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forming a cut in bone to create an osteotomy site with a first bone surface on a first side of the cut and a second bone surface on a second side of the cut; providing or obtaining a pre-assembled osteotomy implant comprising a first part, a second part, and a hinge to facilitate compression or expansion of the osteotomy implant, wherein the first and second parts of the osteotomy implant are non-removably joined via the hinge; comparing a width of the pre-assembled osteotomy implant to a width of the osteotomy site; if the width of the pre-assembled osteotomy implant is wider than the width of the osteotomy site, compressing the implant along the hinge to decrease the width of the osteotomy implant; if the width of the pre-assembled osteotomy implant is narrower than the width of the osteotomy site, expanding the implant along the hinge to increase the width of the osteotomy implant; and implanting the pre-assembled osteotomy implant into the osteotomy site so that the pre-assembled osteotomy implant engages the first and second bone surfaces of the osteotomy site; and
moving an adjustable member that engages the first and second parts of the osteotomy implant to move the first and second parts relative to each other and thereby increase or decrease the width of the osteotomy implant. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of implanting an osteotomy implant at an osteotomy site, the method comprising:
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forming a cut in bone to create an osteotomy site with a first bone surface on a first side of the cut and a second bone surface on a second side of the cut; providing an osteotomy implant comprising; a porous portion configured for bone growth and including a first part with a first sidewall and a second part with a second sidewall, a clearance provided between the first and second sidewalls; a solid portion configured to inhibit tissue growth into the porous portion from outside of the osteotomy site, the solid portion abutting the porous portion, the first and second sidewalls of the porous portion extending from the solid portion to define the clearance; and a hinge portion configured to enable the implant to be adjustable by either compressing the implant relative to the hinge to decrease the clearance or expanding the implant relative to the hinge to increase the clearance; determining a size of the osteotomy site; comparing a size of the osteotomy implant to the size of the osteotomy site; adjusting the osteotomy implant between a first configuration and a second configuration to accommodate the osteotomy site; and implanting the osteotomy implant into the osteotomy site so that the osteotomy implant engages the first and second bone surfaces of the osteotomy site;
fixing the first and second parts of the porous portion relative to each other using an adjustment member; and
moving the adjustment member to increase or decrease the clearance between the first and second sidewalls. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification