Patent ID: 8092545
Filing Date: 2012-01-10
Classification: A61F

Abstract:
1. A method of performing knee arthroplasty comprising the steps of: (a) providing a multi-piece tibial component, the tibial component including (b) preparing the proximal end of a tibia including forming a cavity along the intramedullary canal of the tibia; (c) positioning the tibial base on the prepared tibia proximal end; (d) thereafter positioning the tibial stem through the passageway in the tibial base, wherein a portion of the tibial stem is retained within the passageway and a portion of the tibial stem extends distally from the open distal end of the passageway and into the prepared cavity; and (e) securing the tibial base and the tibial stem together by threadably engaging the threaded flange portion of the tibial stem with the threaded aperture of the tibial base, such that the tapered extension of the tibial stem is lockingly engaged with the passageway of the tibial base, said step of securing the tibial base including leaving a gap between a distal side of the threaded flange and a proximal surface of the shoulder to ensure that the threadably engaging step effects locking engagement of the tapered extension and tibial base.