INTERCONDYLAR COMPONENT AND FIN ATTACHMENT FEATURES FOR USE IN KNEE ARTHROPLASTY

摘要

Tibial prosthesis having one or more fins for use in a total or unicompartmental knee athroplasty procedure are disclosed. The one or more fins can be adapted to fix a tibial prosthesis to the tibia and can engage with corresponding channels formed in the resected tibia. Additionally, intercondylar components and methods for use in a total or unicompartmental knee athroplasty procedure are disclosed. The intercondylar component can be integral with or attached to a baseplate configured for attachment to a partially resected proximal surface of the tibia that retains at least a portion of the intercondylar eminence and the anterior cruciate ligament (ACL) and/or the posterior cruciate ligament (PCL). Inner surfaces of the intercondylar component can be configured to engage with at least a portion of the intercondylar eminence remaining with the partially resected tibia. In an example, the intercondylar component or the one or more fins can be formed of a porous material, such as to facilitate bone growth.

主权项

1. A tibial implant configured for attachment to a tibia in a knee arthroplasty, the tibial implant comprising:
a baseplate configured for attachment to a partially resected proximal surface of the tibia and comprising:
a medial compartment;a lateral compartment; andan anterior bridge portion between the medial and lateral compartments such that a notch is formed between an inner surface of the medial compartment and an inner surface of the lateral compartment; and an intercondylar component attachable to or integral with the baseplate, the intercondylar component comprising:
a medial portion configured to connect to the inner surface of the medial compartment;a lateral portion configured to connect to the inner surface of the lateral compartment; andan arcuate portion between the medial portion and the lateral portion and configured to connect to the bridge portion of the baseplate.