ARTIFICIAL HIP JOINT SOCKET AND ATTACHMENT JIG THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an artificial hip joint socket capable of easily positioning a cup in correct position and direction and stably fixing the socket, and to provide a jig for stably attaching the socket having a leg on an outer peripheral surface, in correct position and direction.;SOLUTION: An artificial hip joint is formed of one member in an approximately hemispherical shell shape, and is configured in which three legs 3 extend radially at approximately regular intervals on an outer peripheral surface of an opening side groove part of a hemispherical cup 2. The legs 3 can be bent along a surface orthogonal to the opening surface of the cup, and a screw hole 4 or a taper is provided at a top end part of each leg 3. A jig includes: a pelvis abutting part at a tip end part which abuts to a pelvis; a cutting tool guiding cylinder part, a cylindrical hollow of which a rotary cutting tool can be inserted into; and screw guide holes for screws screwed into the screw holes at the tip end of the socket. The tip end of the jig has a shape that covers more than a half around the hemispherical opening side groove part and the all legs, and also has a shape that fits to a surface shape around an acetabulum in which the socket is embedded. Further, an axial direction of the cylindrical part is aligned with a direction of cutting the acetabulum.;COPYRIGHT: (C)2014,JPO&INPIT