(A) The X-ray of a case of an infected proximal humerus fracture sequelae, originally treated with a plate. (B) After plate removal, the first RSA was implanted, which subsequently dislocated, resulting in infection. (C) A two-stage procedure was performed: removal of the RSA, debridement and implant of a cement antibiotic spacer with vancomycin. (D) Spacer X-ray postoperative image.