WYSS, JOSEPH,WAGNER, CHRISTEL M,SOKOLOV, DIMITRI,LEE, JORDAN S,WILLIAMS, JOHN L,GOMAA, SAID,ARMACOST, JOHN M
申请号：
ES09164160
公开号：
ES2537337T3
申请日:
2009.06.30
申请国别(地区):
ES
年份:
2015
代理人:
摘要：
A prosthetic orthopedic posterior stabilized knee (10) comprising: a femoral component (12) including (i) a pair of spaced condyles (52, 54) defining a intracondilar notch (56) therebetween, at least one of pair of spaced apart condyles (52, 54) a surface (100) of curved condyle in the sagittal plane and (ii) a posterior cam (80) positioned at the incisura intracondilar (56) and a tibial bearing (14) including (i) a platform (30) having a support surface (32) configured to articulate with the surface (100) of the condyle of the femoral component (12) and (ii) a column ( 60) extending upwardly from the platform (30) the knee prosthesis is characterized in that the surface (100) of the condyle of the femoral component (12) (i) contacting the support surface (32) at a first contact point on the surface (100) of the condyle with first degree of flexion being smaller the first degree of flexion at about 30 °, (ii) contacting the support surface (32) at a second contact point on the surface (100) of the condyle with a second degree of bending, being the second degree of flexion in the range of 35 ° to 90 °, (iii) contacting the support surface (32) at a third contact point on the condyle surface (100) with a third degree flexion, the third degree of flexion being greater than the second degree of flexion, and (iv) contacting the support surface (32) at a plurality of contact points between the first contact point and the second point contact when the femoral component (12) It is moved from the first degree of flexion to the second degree of flexion wherein the posterior cam (80) of the femoral component (12) comes into contact with the column (60) of the tibial bearing (14) in a fourth degree of flexion never exceed the fourth degree of flexion greater than about 10 ° the third degree of flexion in which each contact point of the plurality of contact points is defined by a ray extending from a common origin to the respective contact of the plurality of contact points, TE2
