| 主权项 |
1. A revision implant system for a revision surgery on a hip area of a patient, comprising:
an acetabular cup comprising a cup portion and a peripheral portion, the acetabular cup having a first surface configured to interface with the pelvic bone of the patient, the acetabular cup having a second surface facing away from the pelvic bone of the patient, at least a part of the second surface adapted to face a femoral component of a hip implant, the acetabular cup including a plurality of screw holes formed from the first surface to the second surface, the screw holes having a first diameter at the first surface and a second diameter at the second surface, the second diameter being greater than the first diameter, the plurality of screw holes having threaded inner surfaces; and a first screw having a shaft and a head, the shaft having a third diameter less than the first diameter of the screw holes, the head having a fourth diameter greater than the first diameter of the screw holes, the shaft having threads configured to engage the pelvic bone structure, the head having threads formed thereon and configured to engage the threaded inner surface of a first of the screws holes in the acetabular cup; and a second screw having a shaft and a head, the shaft of the second screw having a fifth diameter less than the first diameter of the screw holes, the head of the second screw having a sixth diameter greater than the first diameter of the screw holes, the shaft of the second screw having threads configured to engage the pelvic bone structure, the head of the second screw being free of threads to define a non-threaded head, the non-threaded head driven into secure engagement with the threaded inner surface of a second of the screw holes in the acetabular cup. |
