Trial femoral prosthesis for use in knee joint replacement surgery
First Claim
1. A posterior stabilized femoral trial apparatus for preparing a patient'"'"'s femur to receive a posterior stabilized femoral prosthesis, comprising:
- a) a trial body that includes medial and lateral portions and proximal and distal portions, the distal portion having an articulating surface for articulating with a patient'"'"'s tibial component;
b) the articulating surface including anterior, distal and posterior condylar portions;
c) the proximal surface including a plurality of flat intersecting surfaces;
d) a module that fits the trial body at the proximal surface, the module including a rasping surface that extends longitudinally along a proximal to distal plane that is generally parallel to an anterior to posterior plane;
e) the module being removably attachable to the trial body at the proximal surface.
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Accused Products
Abstract
A posterior stabilized femoral trial apparatus for preparing a patient'"'"'s femur to receive a posterior stabilized femoral prosthesis includes a trial body with proximal and distal portions, the distal portion having an articulating surface for articulating with a patient'"'"'s tibial component. A module fits the trial body at the proximal surface, the module being selected from a kit or group of modules of differing sizes and shapes. The module includes a rasping surface that extends longitudinally. The trial body includes cutting surfaces at the posterior condyles. The module is removably attachable to the trial body at the proximal surface. During use, the apparatus of the present invention enables the surgeon to resect the patient'"'"'s femur in a revision surgical case using the trial itself and more particularly the rasping surface and cutting surface thereon.
159 Citations
26 Claims
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1. A posterior stabilized femoral trial apparatus for preparing a patient'"'"'s femur to receive a posterior stabilized femoral prosthesis, comprising:
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a) a trial body that includes medial and lateral portions and proximal and distal portions, the distal portion having an articulating surface for articulating with a patient'"'"'s tibial component; b) the articulating surface including anterior, distal and posterior condylar portions; c) the proximal surface including a plurality of flat intersecting surfaces; d) a module that fits the trial body at the proximal surface, the module including a rasping surface that extends longitudinally along a proximal to distal plane that is generally parallel to an anterior to posterior plane; e) the module being removably attachable to the trial body at the proximal surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A posterior stabilized femoral trial apparatus for preparing a patient'"'"'s femur to receive a posterior stabilized femoral prosthesis, comprising:
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a) a trial body that includes proximal and distal portions, the distal portion having a "J" shaped curved articulating surface for articulating with a patient'"'"'s tibial component; b) the articulating surface including an anterior surface, a distal surface, and a posterior condylar surface; c) the proximal surface including at least one flat surface; d) a module that removably fits the trial body at the flat surface, the module including a plurality of wall portions extending away from the flat surface, one of the wall portions having a rasping surface thereon; e) a stem on the module for fitting a patient'"'"'s femoral intramedullary canal; f) slots through the trial body having cutting guide surfaces for guiding a surgeons cutting blade for shaping the patient'"'"'s femur; g) the posterior condylar surface having cutting surface for cutting the patient'"'"'s femur at the condylar portions of the femur; and h) the module having proximal sharp cutting edges. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A femoral trial apparatus for preparing a patient'"'"'s femur to receive a femoral prosthesis, comprising:
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a) a trial body that includes proximal and distal portions, the distal portion having a curved articulating surface for articulating with a patient'"'"'s tibial component; b) the articulating surface including an anterior surface, a distal surface and a posterior condylar surface; c) a kit that includes a plurality of modules that each fit the trial body at the proximal surface, each module including a base portion that fits the proximal surface and a walled portion projecting from the base portion; d) each module being removably attachable to the trial body at the proximal surface; e) the posterior condylar surface having a cutting edge portion that can cut the patient'"'"'s femur at the femoral condyles during surgical placement of the trial body on the patient'"'"'s femur; and f) each module having sharp proximal cutting edges.
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Specification