Method and system for mammalian joint resurfacing
First Claim
1. A system for the modification of a knee, the system comprising a knee implant that provides a first major surface adapted to be positioned upon a tibial plateau, and a second major surface adapted to be positioned against a femoral condyle, the second major surface being provided with a femoral glide path to facilitate its performance in situ, the glide path being in the form of a generally central depression, the implant further comprising one or more tibial projections, extending distally over a rim of the tibial plateau and into a posterior cruciate ligament (PCL) fossa of a tibia, wherein the implant remains substantially permanently anchored in place with respect to the tibial plateau when positioned in the knee by a combination comprising the first major surface, the second major surface, and the tibial projection(s).
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Abstract
A method and system for the creation or modification of the wear surface of orthopedic joints, involving the preparation and use of one or more partially or fully preformed and procured components, adapted for insertion and placement into the body and at the joint site. In a preferred embodiment, component(s) can be partially cured and generally formed ex vivo and further and further formed in vivo at the joint site to enhance conformance and improve long term performance. In another embodiment, a preformed balloon or composite material can be inserted into the joint site and filled with a flowable biomaterial in situ to conform to the joint site. In yet another embodiment, the preformed component(s) can be fully cured and formed ex vivo and optionally further fitted and secured at the joint site. Preformed components can be sufficiently pliant to permit insertion through a minimally invasive portal, yet resilient enough to substantially assume, or tend towards, the desired form in vivo with additional forming there as needed.
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Citations
24 Claims
- 1. A system for the modification of a knee, the system comprising a knee implant that provides a first major surface adapted to be positioned upon a tibial plateau, and a second major surface adapted to be positioned against a femoral condyle, the second major surface being provided with a femoral glide path to facilitate its performance in situ, the glide path being in the form of a generally central depression, the implant further comprising one or more tibial projections, extending distally over a rim of the tibial plateau and into a posterior cruciate ligament (PCL) fossa of a tibia, wherein the implant remains substantially permanently anchored in place with respect to the tibial plateau when positioned in the knee by a combination comprising the first major surface, the second major surface, and the tibial projection(s).
Specification