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confirmed on the basis of plain radiographs obtained in the early postoperative period, and 2were identified at a follow-up examination conducted more than 3 months postoperatively. Allpatients showed clinical improvement. Revision surgery was not required to rectify incompleteseating.Conclusions: We agreed with Langdown AJ. et al who reported that this implant design had anelevated rim and that shell deformity upon implantation can cause incomplete seating.Therefore, when using this implant, due care should be taken during implantation of the liner. Itis necessary to conduct follow-up examination in patients with incomplete seating of the linerbecause these patients can have problems such as metallosis, corrosion, fatigue fracture ofimplants, and implant loosening.Friday, October 8, 2010, 15:20-16:00Session B14: Hip ResurfacingThe Outcome of the Treatment of Periprosthetic Hip Infection Using a TwoStage Reimplantation Protocol With a Cement SpacerIntroduction*Hideyuki Tashima - Saiseikai Nakatsu Hospital - Osaka, Japan*Email: hideyukitashima0218@gmail.comPeriprosthetic infection is a serious complication after total hip arthroplasty (THA). Two stageprocedure using antibiotic-impregnated cement spacer is one of the treatments for late chronicinfection after THA. We investigated the effects of two stage procedure on the infection controland the recurrence of infection after revision THA.Materials and MethodsWe retrospectively reviewed a consecutive series of 10 cases of a periprosthetic infection afterhip arthroplasty, including 3 THA and 7 bipolar hemiarthroplasty (BHA). They were treatedwith two stage procedure using antibiotic-impregnated cement spacer from 2004 to 2009. Therewere 4 women and 6 men with an average age of 68.4 years. The pathogens were methicilinresistantStaphylococcus aureus (MRSA) in 3 cases, coagulase-negative Staphylococcus (CNS)in 2 cases, Enterococcus in 2 cases, Streptococcus in 2 cases, and unknown in 1 case.After removal of the prosthesis, extensive debridement was performed to remove infectedtissues and residual cement. After irrigation with iodine solution, antibiotic-impregnated cementspacer was inserted with proximal cement fixation to prevent dislocation and fracture of thecement spacer. The antibiotics that were impregnated in the cement spacer were VCM in 8cases, MEPM in 1 case, and CAZ in 1 case. Intravenous antibiotics were administrated for 3weeks after this first stage surgery, and then oral antibiotics were administrated until C-reactiveprotein (CRP) rates became negative. After confirming the culture of joint fluid contained nopathogens, second stage revision surgery was performed. The average follow-up period afterrevision THA was 2.3 years.file:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]