Patent ID: 6067701
Filing Date: 2000-05-30
Classification: A61F,B23P,C21D,Y10S,Y10T

Abstract:
A method of forming a work hardened orthopedic joint having a male member and a female member for use in an orthopedic surgical procedure, said method comprising:machining the male member by removing excess material to form a first cylindrical portion and a second tapered portion with an oversized region located therebetween at a stress concentration area of the male member where the oversized region on the male member extends beyond a final configuration of the male member;reducing the size of the oversized region by cold rolling at least a portion of the oversized region into the male member to form a concentrated work hardened contact area at the stress concentration area of the male member;machining the male member into the final configuration to remove any remaining portion of the oversized region that extends beyond the final configuration; andjoining the male member with the female member, whereby at least a portion of the concentrated work hardened contact area at the stress concentration area of the male member engages the female member.