Tibial tray for total knee arthroplasty
First Claim
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1. An improved tibial tray for total knee arthroplasty, said tibial tray comprising:
- a tibial base plate comprising a top surface and a bottom surface, said tibial base plate further comprising an asymmetric keel integrally formed on said tibial base plate and depending from said bottom surface, said asymmetric keel comprising a first side and a second side; and
said tibial base plate further comprising at least one fin integrally formed on said tibial base plate and depending from said bottom surface, said fin comprising a keel edge that is integrally attached to one of said first and second sides of said asymmetric keel, said first side and said second side of said asymmetric keel each defining non-planar curved surfaces that are substantially parallel to each other.
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Abstract
An improved one piece tibial tray uniquely characterized by its construction including an asymmetric keel extending from the bottom of the tibial tray base plate, whereby insertion of the tray during arthroplasty may be accomplished with a smaller than normal incision, enhancing the efficacy and safety of the surgical procedure. A fin on either or both sides of the asymmetric fin may be provided for enhanced stability of the tray.
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Citations
8 Claims
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1. An improved tibial tray for total knee arthroplasty, said tibial tray comprising:
- a tibial base plate comprising a top surface and a bottom surface, said tibial base plate further comprising an asymmetric keel integrally formed on said tibial base plate and depending from said bottom surface, said asymmetric keel comprising a first side and a second side; and
said tibial base plate further comprising at least one fin integrally formed on said tibial base plate and depending from said bottom surface, said fin comprising a keel edge that is integrally attached to one of said first and second sides of said asymmetric keel, said first side and said second side of said asymmetric keel each defining non-planar curved surfaces that are substantially parallel to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a tibial base plate comprising a top surface and a bottom surface, said tibial base plate further comprising an asymmetric keel integrally formed on said tibial base plate and depending from said bottom surface, said asymmetric keel comprising a first side and a second side; and
Specification