METHOD FOR PLASTY OF DEFECTS OF ACETABULUM ANTERO- AND POSTEROSUPERIOR EDGE WITH STRUCTURAL AUTOBONE IN HIP JOINT ENDOPROSTHESIS Russian patent published in 2017 - IPC A61B17/56 

FIELD: medicine.

SUBSTANCE: bone bed is formed in the true acetabulum by milling cutters. The area of "undersupplication" of the endoprosthesis pelvic component in the area of acetabulum defect is estimated. Osteoperforation with spokes is performed on the acetabulum defect surface with its treatment with bone spoons. An autotransplant is made, for this, the femur head is separated, cutting across the femur neck with an electric saw, the femur head is cut across from the neck saw line into two parts, the most proper part is selected, processed with a bone clipper, bringing geometry of this part up to congruence with the acetabulum surface defect, while maintaining the cortical layer. The autotransplant is oriented with its cortical layer outwards, so that a part of the autotransplant hangs into the acetabulum area, and is preliminarily fixed with spokes in the area of the defect. The position of the autotransplant is checked and, if necessary, corrected. The autotransplant is fixed with compression screws. The overhanging part of the autotransplant is treated with spherical mills. The shape of the bone bed is controlled by placing a test cup into it. A cement-free pelvic component is installed. The pelvic component is jammed due to a tight fit with respect to the angles of inclination and antetorsion. Spokes are removed. The femoral component of the endoprosthesis is installed. The head of the femoral component is inserted into the pelvic component.

EFFECT: stability of the endoprosthesis pelvic component.

2 dwg