Acetabular reconstruction with massive allograft and cementless prosthesis.

The authors standardize the method to use for a correct approach to acetabular reconstruction in relation to the loss of bone tissue. In type 1 or 2A and C loss, cancellous bone and porous hemispheric acetabula may be used. In type 2B loss there are 3 options: a small acetabulum with a high rotation center, a larger component leaving 30% of the superoexternal portion uncovered, or a larger component with a supporting superoexternal graft. Type 3A requires a supporting graft of distal femur or proximal tibia fused with screws to which a porous hemispheric component with screws is applied. Finally, type 3B loss requires the use of a massive homologous graft fused to the ilium with screws and a component in cemented polyethylene.