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US 2014/0276866 A1Published application
Method And Apparatus For Determining A Location
AssigneeBiomet Manufacturing, LLC
InventorsJason M. ENDSLEY, Mark MOTTRAM, Peter Anthony BRYDON
Life of this patent
Estimating the term…
Abstract
A template operable to reestablish the center of rotation of a native femoral head at the head of an implanted prosthesis. The template includes a first member with a marking passage and optional cutting guide and a second member with a target. The first member of the template can be placed on a femur and the second member can be moved in the proximal-distal, medial-lateral and anterior-posterior directions to fix the center of the target at the center of rotation of a femoral head. The head of a prosthesis can be manipulated to come in contact with the target to reestablish the center of rotation of the native femoral head.
Claims28
A femoral head center location template, comprising:
- a first member configured to be positioned adjacent to a surface of at least one of a shaft of a femur or a greater trochanter of the femur, the first member defining a marking feature to allow a mark to be placed on at least one of the shaft of the femur or the greater trochanter of the femur;
- a second member extending from the first member that is moveable and fixable relative to the first member, the second member including a target portion configured to be positioned by moving at least one of the first member or the second member to identify a center of a femoral head while the first member is positioned adjacent to at least one of the shaft of the femur or the greater trochanter of the femur;
- a first locking member operable to fix the second member in a first direction relative to the first member;
- and
- a second locking member to fix the second member relative to the first member in a second direction different from the first direction relative to the first member;
- wherein the first member and the second member are operable to be removed from near the femur once the second member is fixed relative to the first member in both the first direction and second direction.
3 more elements
A femoral head center location template, comprising:
- a first member configured to be positioned adjacent to a surface of at least one of a shaft of a femur or a greater trochanter of the femur, the first member comprising a marking feature allowing for marking the shaft of the femur or the greater trochanter of the femur;
- a second member extending from the first member that is moveable and fixable relative to the first member;
- a third member extending form the second member that is moveable and fixable relative to the second member, the third member including a target portion configured to be moved to be positioned to identify a center of a femoral head while the first member is positioned adjacent to the surface of at least one of the shaft of the femur or the greater trochanter of the femur;
- a first locking member operable to fix the second member in two directions relative to the first member and a second locking member operable to fix the third member relative to the first member in a third direction;
- wherein the template is operable to be removed from the position adjacent to a surface of at least one of a shaft of a femur or a greater trochanter of the femur once the third member is positioned to identify the center of the femoral head.
2 more elements
A method for determining a native head center of a femur and reestablishing the native head center of the femur with a head of an implanted prosthesis comprising:
- positioning a template comprising a first member that is both operably connected to and movable relative to a second member on an surface of a femur, wherein the femur has a shaft and a native head with a center of rotation, wherein the second member includes a target portion configured to be positioned to identify a center of the native femoral head;
- marking the position of the template on the femur by placing a mark on the femur using a marking feature associated with the first member of the template;
- centering the target portion of the second member near the native head center of the femur by moving the second member relative to the first member;
- and
- removing the template and resecting the native head of the femur,
- wherein the native head center of the femur can be reestablished by positioning the template on the marked surface of the femur and aligning the mark on the femur with the marking feature associated with the first member of the template.
3 more elements
A femoral head center location template, comprising:
- a first member configured to be at least partially inserted into a shaft of a femur;
- a second member extending from the first member that is moveable and fixable relative to the first member, the second member including a first target portion configured to be positioned by moving the second member to identify a first center perspective of a femoral head while the first member is at least partially inserted into the shaft of the femur;
- and
- a third member extending form the first member that is moveable and fixable relative to the first member, the third member including a second target portion configured to be positioned by moving the third member to identify a second center perspective of a femoral head while the first member is at least partially inserted in the shaft of the femur.
1 more element
A method for determining a native head center of a femur and reestablishing the native head center of the femur with a head of an implanted prosthesis comprising:
- positioning a template comprising a first member, a second member, and a third member, wherein the femur has a shaft and a native head with a center of rotation, wherein the second and third members each include a target portion configured to be positioned to identify a center of the native femoral head, into the shaft of the femur;
- centering each target portion of the second and third members at selected first and second positions near the native head center of the femur by moving the second and third members relative to the first member;
- removing the template from the femur and resecting the native head of the femur;
- and
- inserting a broach or a prosthesis into the shaft of the femur,
- wherein the native head center of the femur can be reestablished by repositioning the template into the broach or prosthesis.
3 more elements
Dependencies are inferred from the claim text.