7.P.03 PRELIMINARY EXPERIENCE OF SILVER COATED PROSTHESES IN HIGH RISK PATIENTS

Abstract

Aim: To investigate the effectiveness of silver coated titanium prostheses in preventing periprosthetic infection in a group of very high risk patients.

Methods: Periprosthetic infection is one of the main problems in limb salvage surgery, especially for tibial and pelvic prostheses or following revision surgery, particularly if it has been done for a previous infection. We have used silver coated prostheses in 21 cases on a named patient basis and have now assessed the results.

Results: Between July 2006 and June 2008 21 patients had a silver coated prosthesis inserted. 11 patients were having a second stage revision after a previous infection, 6 were having a pelvic prosthesis inserted, 3 were having a primary tibial replacement and one a one stage proximal tibial revision. Three patients developed a postoperative infection, two of the pelvic replacements and one infected revision (a total femur replacement). Of these only one patient required removal of the prosthesis (for overwhelming coliform infection in a pelvic replacement) whilst the other two infections both settled with antibiotics and washout.

Discussion: The anticipated risk of infection in this high risk group would have been around 20%. The actual infection rate was 14% but two of the infections completely resolved with relatively modest treatment. This suggests that the silver coating may not only have a role in preventing infection but also enhancing control of infection should it arise. There were no other side effects and we believe that these preliminary results are encouraging and should lead to a further evaluation of silver for preventing infection around prostheses.