Methods and apparatus for femoral and tibial resection
DC CAFCFirst Claim
1. A method for a knee arthroplasty procedure comprising:
- positioning at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension;
using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of one resected surface on the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface and moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and
implanting a knee arthroplasty implant on the at least one resected surface.
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Accused Products
Abstract
Methods and apparatus for knee arthroplasty utilize components including an alignment device, a single medially or laterally located guidance device, and a cutting device for use in preparing the bones of a knee joint to receive knee arthroplasty implants. The alignment device is used to locate and orient the guidance device adjacent the medial or lateral side of a long bone of a knee joint. The cutting device is engaged with the guidance device and plunged across the end of the long bone to create a resected surface with respect to which a knee arthroplasty implant will be fixed. In one embodiment, the cutting tool guidance device extends less than about half way across the end of a long bone of a knee joint.
218 Citations
54 Claims
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1. A method for a knee arthroplasty procedure comprising:
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positioning at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of one resected surface on the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface and moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and implanting a knee arthroplasty implant on the at least one resected surface. - View Dependent Claims (2, 3, 4, 8)
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5. A method for a knee implant procedure comprising:
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positioning at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of one resected surface proximate the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface and moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and implanting a knee implant on the at least one resected surface, wherein the at least one guide surface includes at least two portions, the portion located along the at least one of the medial side or the lateral side and an other portion located along an anterior side and proximate the end of the long bone and having a longer dimension generally along the at least anterior side and a shorter dimension generally transverse to the longer dimension, wherein the step of positioning the at least one guide surface is performed such the other portion extends to less than about one-half of a width of the anterior side.
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6. A method for a knee implant procedure comprising:
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operably positioning at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is operably positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being operably positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side orthe lateral side and a shorter dimension generally transverse to the longer dimension; using an alignment mechanism operably coupled to the at least one planar cutting guide surface to align the at least one guide surface relative to the long bone in at least three degrees of freedom, at least one of the degrees of freedom being rotational; and locking the alignment mechanism to position the at least one guide surface in a desired location and orientation; using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of one resected surface proximate the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface and moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and implanting a knee implant on the at least one resected surface. - View Dependent Claims (7)
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9. A method for a knee arthroplasty procedure comprising:
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providing a cutting guide having a slot adapted to receive and guide a cutting tool, the cutting tool having a saw blade with at least one cutting edge at a distal end of a long axis of the saw blade; positioning the cutting guide in a position proximate an end of one of a femur or a tibia with at least a portion of the slot facing the end of the one of the femur or the tibia from one of a medial aspect or a lateral aspect; extending the saw blade though the slot; cutting the end of the one of the femur or the tibia by moving the cutting tool in a direction along the long axis, the direction of the long axis being at least one of a medial to lateral direction or a lateral to medial direction to create at least a portion of at least one resected surface; and implanting a knee arthroplasty implant on the at least one resected surface. - View Dependent Claims (12, 27, 28, 29, 30, 31, 32, 33, 34)
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10. A method for a knee arthroplasty procedure comprising:
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providing a cutting guide having a slot adapted to receive and guide a cutting tool, the cutting tool having a saw blade with at least one cutting edge at a distal end of a long axis of the saw blade; positioning the cutting guide in a position proximate an end of one of a femur or a tibia with at least a portion of the slot facing the end of the one of the femur or the tibia from one of a medial aspect or a lateral aspect by; using an alignment guide operably coupled to the cutting guide to align the slot relative to the one of the femur or the tibia in at least three degrees of freedom, at least one of the degrees of freedom being rotational; and locking the alignment guide to position the cutting guide in a desired location and orientation; extending the saw blade though the slot; cutting the end of the one of the femur or the tibia by moving the cutting tool along the long axis in at least one of a medial to lateral direction or a lateral to medial direction to create at least one resected surface; and implanting a knee arthroplasty implant on the at least one resected surface. - View Dependent Claims (11)
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13. A method for a knee implant procedure comprising:
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providing implants and instrumentation for the knee implant procedure, the implants and instrumentation including at least; a femoral implant; a tibial implant; a femoral intramedullary rod; a femoral alignment guide extending at an angle to the femoral intramedullary rod; a femoral cut guide mountable to the femoral alignment guide; a tibial extramedullary alignment guide; and a tibial cut guide; resecting a distal end of a femur of a knee including at least; inserting the femoral intramedullary rod into an intramedullary canal of the femur; positioning the femoral alignment guide so that a surface on the femoral alignment guide contacts a distal femoral condyle; operably connecting the femoral cut guide to the femoral alignment guide and positioning the femoral cut guide to extend toward and generally along at least one of a medial side or a lateral side of the knee; and guiding a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade by using the femoral cut guide to create at least one resected surface on the distal end of the femur by guiding the long axis of the saw blade from the at least one of the medial side or the lateral side of the knee; resecting a proximal end of a tibia of the knee including at least; positioning the tibial extramedullary alignment guide; operably connecting the tibial cut guide to the tibial extramedullary alignment guide and positioning the tibial cut guide generally adjacent at least a portion of an anterior side of the tibia and at least one of the medial side or the lateral side of the knee; and guiding a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade by using the tibial cut guide to create at least one resected surface on the proximal end of the tibia by guiding the long axis of the saw blade from at least one of the medial side or the lateral side of the knee; and implanting the implants by; positioning the femoral implant with at least one fixation surface of the femoral implant generally adjacent the at least one resected surface of the femur; and positioning the tibial implant with at least one fixation surface of the tibial implant generally adjacent to the at least one resected surface of the tibia. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 35, 36, 37, 38, 39, 40)
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21. A method for providing instrumentation, implants and information for a knee arthroplasty procedure comprising:
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providing a knee arthroplasty implant and a cutting guide having at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is adapted to be positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being adapted to be positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; and providing a surgeon with information on a method to perform the knee arthroplasty procedure using the cutting guide and the knee arthroplasty implant, the method including; positioning the at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is positioned along one of the medial side or the lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of at least one resected surface on the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface and moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and implanting the knee arthroplasty implant on the at least one resected surface.
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22. A method for providing instrumentation, implants and information for a knee arthroplasty procedure comprising:
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providing a knee arthroplasty implant and a cutting guide having at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is adapted to be positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being adapted to be positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; and providing a surgeon with information on a method to perform the knee arthroplasty procedure using the cutting guide and the knee arthroplasty implant, the method including; positioning the at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is positioned along one of the medial side or the lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of one resected surface proximate the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and implanting the knee implant on the at least one resected surface, wherein the at least one guide surface includes at least two portions, the portion located along the at least one of the medial side or the lateral side and an other portion located along an anterior side and proximate the end of the long bone and having a longer dimension generally along the at least anterior side and a shorter dimension generally transverse to the longer dimension, wherein the step of positioning the at least one guide surface is performed such the other portion extends to less than about one-half of a width of the anterior side.
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23. A method for providing instrumentation, implants and information for a knee arthroplasty procedure comprising:
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providing a cutting guide having at least one generally planar cutting guide surface, an alignment mechanism operably coupled to the at least one planar cutting guide surface and a knee arthroplasty implant; and providing a surgeon with information on a method to perform the knee arthroplasty procedure using the cutting guide, the alignment mechanism and the knee arthroplasty implant, the method including; operably positioning the at least one generally planar cutting guide surface that is adapted to interface with and guide a saw blade such that at least a portion of the at least one guide surface is operably positioned along one of a medial side or a lateral side and proximate an end of a long bone of a knee joint, the at least one guide surface also being operably positioned generally transverse to a long axis of the long bone with the portion of the at least one guide surface having a longer dimension generally along the at least one of the medial side or the lateral side and a shorter dimension generally transverse to the longer dimension; using the alignment mechanism operably coupled to the at least one planar cutting guide surface to align the at least one guide surface relative to the long bone in at least thee degrees of freedom, at least one of the degrees of freedom being rotational; and locking the alignment mechanism to position the at least one guide surface in a desired location and orientation; using a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade to create at least a portion of one resected surface proximate the end of the long bone by guiding the saw blade with at least the portion of the at least one guide surface and moving the saw blade in a direction along the long axis of the saw blade, the direction of the long axis of the saw blade being generally parallel to the shorter dimension; and implanting the knee implant on the at least one resected surface.
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24. A method for providing instrumentation, implants and information for a knee arthroplasty procedure comprising:
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providing a knee arthroplasty implant and a cutting guide having a slot adapted to receive and guide a cutting tool, the cutting tool having a saw blade with at least one cutting edge at a distal end of a long axis of the saw blade; providing a surgeon with information on a method to perform the knee arthroplasty procedure using the cutting guide, the cutting tool and the knee arthroplasty implant, the method including; positioning the cutting guide in a position proximate an end of one of a femur or a tibia with at least a portion of the slot facing the end of the one of the femur or the tibia from one of a medial aspect or a lateral aspect; extending the saw blade through the slot; cutting the end of the one of the femur or the tibia by moving the cutting tool in a direction along the long axis, the direction of the long axis being at least one of a medial to lateral direction or a lateral to medial direction to create at least a portion of at least one resected surface; and implanting the knee arthroplasty implant on the at least one resected surface. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48)
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25. A method for providing instrumentation, implants and information for a knee arthroplasty procedure comprising:
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providing a knee implant, a cutting guide having a slot adapted to receive and guide a cutting tool, the cutting tool having a saw blade with at least one cutting edge at a distal end of a long axis of the saw blade and an alignment guide operably coupled to the cutting guide; providing a surgeon with information on a method to perform the knee arthroplasty procedure using the cutting guide, the cutting tool and the knee arthroplasty implant, the method including; positioning the cutting guide in a position proximate an end of one of a femur or a tibia with at least a portion of the slot facing the end of the one of the femur or the tibia from one of a medial aspect or a lateral aspect by; using the alignment guide operably coupled to the cutting guide to align the slot relative to the one of the femur or the tibia in at least three degrees of freedom, at least one of the degrees of freedom being rotational; and locking the alignment guide to position the cutting guide in a desired location and orientation; extending the saw blade though the slot; cutting the end of the one of the femur or the tibia by moving the cutting tool along the long axis in at least one of a medial to lateral direction or a lateral to medial direction to create at least one resected surface; and implanting the knee arthroplasty implant on the at least one resected surface.
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26. A method for providing implants, instrumentation and information for a knee implant procedure comprising:
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providing implants and instrumentation for the knee implant procedure, the implants and instrumentation including at least; a femoral implant; a tibial implant; a femoral intramedullary rod; a femoral alignment guide extending at an angle to the femoral intramedullary rod; a femoral cut guide mountable to the femoral alignment guide; a tibial extramedullary alignment guide; and a tibial cut guide; providing a surgeon with information for a method for performing the knee implant procedure comprising; resecting a distal end of a femur of a knee including at least; inserting the femoral intramedullary rod into an intramedullary canal of the femur; positioning the femoral alignment guide so that a surface on the femoral alignment guide contacts a distal femoral condyle; operably connecting the femoral cut guide to the femoral alignment guide and positioning the femoral cut guide to extend toward and generally along at least one of a medial side or a lateral side of the knee; and guiding a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade by using the femoral cut guide to create at least one resected surface on the distal end of the femur by guiding the long axis of the saw blade from the at least one of the medial side or the lateral side of the knee; resecting a proximal end of a tibia of the knee including at least; positioning the tibial extramedullary alignment guide; operably connecting the tibial cut guide to the tibial extramedullary alignment guide and positioning the tibial cut guide generally adjacent at least a portion of an anterior side of the tibia and at least one of the medial side or the lateral side of the knee; and guiding a cutting tool having a saw blade with a cutting edge at a distal end of a long axis of the saw blade by using the tibial cut guide to create at least one resected surface on the proximal end of the tibia by guiding the long axis of the saw blade from at least one of the medial side or the lateral side of the knee; and implanting the implants by; positioning the femoral implant with at least one fixation surface of the femoral implant generally adjacent the at least one resected surface of the femur; and positioning the tibial implant with at least one fixation surface of the tibial implant generally adjacent to the at least one resected surface of the tibia. - View Dependent Claims (49, 50, 51, 52, 53, 54)
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Specification