BERNASEK, THOMAS L,CROSSETT, LAWRENCE S,HAIDUKEWYCH, GEORGE J,LIEBERMAN, JAY R,SORDELET, BENJAMIN J,JONES, RICHARD SPENCER,VENDRELY, TIMOTHY G,WAINSCOTT, STEPHANIE M,COOK, MICHAEL A,CHANEY, REBECCA L
申请号：
ES13185436
公开号：
ES2540579T3
申请日:
2013.09.20
申请国别(地区):
ES
年份:
2015
代理人:
摘要：
A modular knee prosthesis system, comprising: a femoral implant distal component (10) having a pair of separate curved distal condylar surfaces (12, 14) and a stem (16) having an external surface (75) that tapers from a distal end in a proximal direction, the outer surface of the stem having a maximum outer diameter at the distal end and a smaller outer diameter in a second position proximal to the distal end, a proximal implant component (30, 32) tibial having an articulating surface (37, 39) for receiving and articulating with the distal condylar surfaces of the distal femoral implant component, a first metaphyseal member (24) having an external surface that tapers in the proximal direction and a surface internal (64) defining a tapered hole (68, 72), the outer surface of the first metaphyseal member comprising a stepped portion (49) having a plurality of steps (50), each step having a maximum medial-lateral dimension and a maximum anterior-posterior dimension, the stepped portion having a total axial length L, and a second metaphyseal member (24A) having an external surface that tapers in the direction proximal and an internal surface (64A) defining a tapered hole (68A, 72A), the external surface of the second metaphyseal member comprising a stepped portion (49A) having a plurality of steps (50A), each step having a medial dimension- maximum lateral and maximum anterior posterior dimension, the stepped portion having a total axial length L + X, characterized in that the proximal component of the tibial implant has a stem (36) whose external surface tapers from a proximal end in the distal direction, the external surface of the stem a maximum external diameter at the proximal end and a smaller external diameter at a second position distal to the proximal end, The tapered hole in each of the first and second metaphyseal members is dimensioned and formed to be mountable on the stem of one of the implant components to create a friction lock between the stem and membe
