Fig. 4
From: Multicup reconstruction technique for the management of severe protrusio acetabular defects
Intraoperative photographs demonstrating the “multicup” technique. A After removal of the failed acetabular components, cement and membrane, the acetabular deficiencies were confirmed again intraoperatively. B The medial TM tantalum revision shell was implanted into the medial defect with multiple screws to serve as upgraded-augment or the foundation for the following porous cups. C The screw holes on the bottom TM cup were blocked with wax to prevent the cement from entering the interface between the host bone and the tantalum revision shell. D The smaller second cup was cemented into the medial shell with the desired anteversion and abduction. E The additional porous cup was added to the finished “cup-in-cup” construct. F The modular liner with a 10° elevated rim was inserted