Bridging and Repairing Patient Specific Acetabular Defects with a New Custom Acetabular Cage

Abstract

Sever acetabular defects can usually be addressed with a standard acetabular cage. The procedure is more complicated, as standard devices have to be adapted to different shapes of acetabular defects, especially when they are bigger and widespread. The proposed cage tries to fix problems that standard cages sometimes do not resolve for example insufficient fixation due to the fact that the inferior flange did not engage the ischium, graft resorption and at the same time tries to remain affordable. The implant is being built based on the 3D reconstruction of the patient hip from CT scans with the help of additive technologies and uses standard components (cup, screws). The particular implant was designed and produced and it is available for patient implantation. The proposed solution offers a better fit alternative for the patient but realization of the implant is very time consuming, although a systematized process was tried and achieved.