“…In a retrospective case-control study on 41 patients [56], the authors examined which radiographic signs predicted failure of 2stage revision arthroplasty, if present after the first stage surgery. These radiologic signs were as follows: retained metal implants, new metal implants, retained cement, retained cement restrictor, new fracture, the local anti-microbial delivery system (eg, gentamicin-loaded beads), and use of a drain.…”