Patello-femoral joint implant and instrumentation
AssigneeSmith & Nephew, Inc.
InventorsChristopher F. Scifert, Jason S. Jordan, John H. Newman, William B. Smith
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Abstract
A system for preparing a trochlear region of a resected femur is disclosed. The system includes a reamer guide and a reamer. The reamer guide has a first arcuate portion, a second arcuate portion, a wall, a protrusion connected to the wall, a leg connected to one of the first or second arcuate portion, and a distal tip portion connected to the leg. The reamer is adapted to rotatably connect to the distal tip portion, and the reamer has a first end portion, a second end portion, and one or more flutes.
Claims19
A method of preparing a femur for a patello-femoral implant, comprising the steps of:
- a. cutting a planar anterior surface on the femur;
- b. attaching a reamer guide to the planar anterior surface, the reamer guide having a wall portion, a leg connected to the wall portion, and a distal tip portion connected to the leg;
- c. connecting a reamer to the distal tip portion of the reamer guide;
- and
- d. reaming a portion of a trochlea by translating the reamer medially or laterally along the wall portion of the reamer guide, wherein the step of reaming includes pivoting a portion of the reamer about the distal tip portion of the reamer guide.
A method of preparing a femur for a patello-femoral implant, comprising the steps of:
- a. cutting a planar anterior surface on the femur;
- b. attaching a reamer guide to the planar anterior surface, the reamer guide having a wall portion, a leg connected to the wall portion, and a distal tip portion connected to the leg;
- c. engaging a distal portion of a reamer with the distal tip portion of the reamer guide;
- and
- d. reaming a portion of a trochlea by translating the reamer along the wall portion of the reamer guide and pivoting the reamer about the distal tip portion while the distal portion of the reamer remains engaged with the distal tip portion of the reamer guide.
A method of preparing a femur for a patello-femoral implant, comprising the steps of:
- a. cutting a planar anterior surface on the femur;
- b. attaching a reamer guide to the planar anterior surface, the reamer guide having a wall portion, a leg connected to the wall portion, and a distal tip portion connected to the leg, the distal tip portion defining a recess;
- c. placing a distal end portion of a reamer in the recess in the distal tip portion of the reamer guide;
- and
- d. reaming a portion of a trochlea by translating a proximal portion of the reamer along the wall portion of the reamer guide such that a portion of the proximal portion of the reamer remains in contact with the wall portion during translation of the proximal portion, and pivoting the distal end portion of the reamer in the recess.
Dependencies are inferred from the claim text.