Journal
BONE & JOINT OPEN
Volume 2, Issue 8, Pages 671-678Publisher
BRITISH EDITORIAL SOC BONE & JOINT SURGERY
DOI: 10.1302/2633-1462.28.BJO-2021-0002.R2
Keywords
Prosthetic joint infection; Total hip arthroplasty; Total knee arthroplasty; Revision arthroplasty; Fungal infection; Fungal prosthetic joint infection; Infection treatment; fPJI; PJI
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In this study, a novel treatment algorithm based on three-stage revision arthroplasty with local and systemic antifungal therapy was implemented for fungal periprosthetic joint infections (fPJI). The results showed a successful eradication rate of 88.8% in 18 patients with a mean follow-up of 35 months, indicating promising outcomes in the treatment of fPJI.
Aims Fungal periprosthetic joint infections (fills) are rare complications, constituting only 1% of all PJIs. Neither a uniform definition for fPJI has been established, nor a standardized treatment regimen. Compared to bacterial PJI, there is little evidence for fPJI in the literature with divergent results. Hence, we implemented a novel treatment algorithm based on three-stage revision arthroplasty, with local and systemic antifungal therapy to optimize treatment for fPJI. Methods From 2015 to 2018, a total of 18 patients with fPJI were included in a prospective, single-centre study (DKRS-ID 00020409). The diagnosis of PJI is based on the European Bone and Joint Infection Society definition of periprosthetic joint infections. The baseline parameters (age, sex, and BMI) and additional data (previous surgeries, pathogen spectrum, and Charlson Comorbidity Index) were recorded. A therapy protocol with three-stage revision, including a scheduled spacer exchange, was implemented. Systemic antifungal medication was administered throughout the entire treatment period and continued for six months after reimplantation. A minimum follow-up of 24 months was defined. Results Eradication of infection was achieved in 16 out of 18 patients (88.8%), with a mean followup of 35 months (25 to 54). Mixed bacterial and fungal infections were present in seven cases (39%). The interval period, defined as the period of time from explantation to reimplantation, was 119 days (55 to 202). In five patients, a salvage procedure was performed (three cementless modular knee arthrodesis, and two Girdlestone procedures). Conclusion Therapy for fPJI is complex, with low cure rates according to the literature. No uniform treatment recommendations presently exist for fPJI. Three-stage revision arthroplasty with prolonged systemic antifungal therapy showed promising results.
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