Methods and apparatus for pinplasty bone resection
First Claim
1. A method for implanting an orthopedic prosthesis during athroplasty surgery comprising:
- creating a plurality of apertures extending into a bone from a position that intersects a peripheral rim border that externally delineates a resected surface to be created in the bone that defines a surface shaped to interface with a corresponding fixation surface of the orthopedic prosthesis;
for each of the apertures, inserting a pin from a position outside the border of the resected surface into that aperture, such that the pin extends along an axis parallel to the resected surface with a distal end of the pin positioned within the border of the resected surface;
utilizing a cutting instrument to create the resected surface wherein the cutting instrument includes at least one surface that engages at least a portion of at least a line of contact on at least two of the pins that define a plane that is parallel with the resected surface; and
operably attaching the corresponding fixation surface of the orthopedic prosthesis to the resected surface.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and apparatus for performing arthoplasty utilizes a plurality of apertures created in a bone, each aperture having a cross section defined perpendicular to an axis of the aperture that intersects a plane of a resected surface to be created in the bone and also intersects a peripheral rim border that externally delineates the resected surface. A pin feature is inserted into each of the plurality of apertures and the resected surface is created by guiding a cutting tool along at least a line of contact of the pin features. An implant can then be attached to the resected surface.
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Citations
12 Claims
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1. A method for implanting an orthopedic prosthesis during athroplasty surgery comprising:
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creating a plurality of apertures extending into a bone from a position that intersects a peripheral rim border that externally delineates a resected surface to be created in the bone that defines a surface shaped to interface with a corresponding fixation surface of the orthopedic prosthesis;
for each of the apertures, inserting a pin from a position outside the border of the resected surface into that aperture, such that the pin extends along an axis parallel to the resected surface with a distal end of the pin positioned within the border of the resected surface;
utilizing a cutting instrument to create the resected surface wherein the cutting instrument includes at least one surface that engages at least a portion of at least a line of contact on at least two of the pins that define a plane that is parallel with the resected surface; and
operably attaching the corresponding fixation surface of the orthopedic prosthesis to the resected surface.
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2. A method of performing arthoplasty comprising:
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creating a plurality of apertures in a bone, each aperture having a cross section defined perpendicular to an axis of the aperture that intersects a plane of a resected surface to be created in the bone and also intersects a peripheral rim border that externally delineates the resected surface;
inserting a pin feature into each of the plurality of apertures;
creating the resected surface by guiding a cutting tool along at least a line of contact of the pin features; and
attaching an implant to the resected surface.
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3. A method of implanting a first orthopedic prosthesis during arthroplasty surgery, the first orthopedic prosthesis having at least one bone fixation surface in a generally back to back relation to an articulation surface for contacting a second orthopedic prosthesis, the method comprising:
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aligning a cutting tool guide with respect to the first bone in a pre-defined relation to a desired implant location and orientation of the bone fixation surface of the first orthopedic prosthesis, the cutting tool guide possessing a plurality of guide apertures to guide the introduction of a first cutting tool into the first bone;
for each of the plurality of guide apertures, engaging the first cutting tool with the guide aperture and plunging the first cutting tool from a first position beyond an external surface of the first bone to a second position within the external surface of the first bone to create a plurality of bone apertures, the first position and the second position of defining an axis for that bone aperture which is parallel to the desired implant location and orientation;
for each of the apertures, inserting a pin into that bone aperture such that the pin extends along the axis of the bone aperture;
engaging a second cutting tool along at least a line of contact on at least two of the pins to create a resected surface with respect to which a bone fixation surface of the first orthopedic prosthesis is to be attached; and
operably attaching the bone fixation surface of the first orthopedic prosthesis to the first bone in predetermined relation to the resected surface such that the bone fixation surface of the first orthopedic prosthesis is positioned at the desired implant location and orientation and the articulation surface of the first orthopedic prosthesis is positioned for contacting with the second orthopedic prosthesis, wherein the bone apertures have cross sections defined perpendicular to the axis of each bone aperture that intersect a plane of the resected surface, and wherein the bone apertures interrupt the resected surface. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification