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RESULTS OF IN-CEMENT REVISION OF INFECTED TOTAL HIP ARTHROPLASTY



Abstract

Introduction: Removal of all foreign material is the normal practice at the time of revision arthroplasty for sepsis. However, removal of well fixed bone cement is time consuming, can result in significant bone stock loss and increases the risk of femoral shaft perforation or fracture. We report our results of 2 stage revision hip arthroplasty with retention of a well fixed femoral cement mantle.

Methods: If the femoral cement mantle demonstrated good osseo-integration at first stage it was left in-situ. Following Girdlestone excision arthroplasty (GEA), patients received local and systemic antibiotics and underwent reconstruction at a second stage. At the second stage the femoral component was cemented into the old mantle.

Results: 16 patients (M:F 5:11) had at least 3 years follow up (mean 80 months, range 43 to 91). 1 patient died of an unrelated cause at 53 months. Recurrence of infection was not suspected in this case. The mean time to first stage revision was 57 months (3 to 155). The mean time between first and second stages was 9 months (1 to 35). Organisms were identified in 14 (87.5%) cases (5 Staphylococcus Aureus, 4 Group-B Streptococcus, 2 Coagulase negative Staphylococcus, 2 Enterococcus Faecalis, 1 Escheria Coli). At second stage 5 (31.2%) acetabula were uncemented and 11 (68.8%) were cemented. There were 2 complications, 1 patient dislocated 41 days post-operatively and a second patient required an acetabular revision at 44 days for sudden loss of fixation. No evidence of infection was found at re-revision. Currently no patients are suspected of having a recurrence of infection.

Discussion: In-cement revision of the femoral component following GEA for sepsis is not associated with a higher rate of recurrence of infection. Advantages include a shorter operating time, reduced loss of bone stock, improved component fixation and a technically easier second stage procedure.

Correspondence should be addressed to The Secretary, BHS, c/o BOA, The Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London WC2A 3PE.