Chronic infections of knee megaprostheses: are “Off-Label” DAIR-Plus or partial two-stage exchange viable options? - Summary - MDSpire

Chronic infections of knee megaprostheses: are “Off-Label” DAIR-Plus or partial two-stage exchange viable options?

  • By

  • Davide Stimolo

  • Matteo Innocenti

  • Mattia Carminati

  • Filippo Castrogiovanni

  • Elisabetta Neri

  • Domenico Andrea Campanacci

  • Guido Scoccianti

  • February 19, 2026

  • 0 min

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Objective:

To evaluate the outcomes of DAIR-Plus and partial two-stage exchange in chronic knee megaprosthetic infections and identify prognostic factors for treatment suitability, emphasizing the significance of these factors.

Key Findings:
  • DAIR-Plus and PTSE showed variable success rates in resolving chronic PJIs, with specific rates to be included.
  • Patient characteristics and preoperative imaging influenced the choice of surgical technique.
  • Infection resolution was measured through clinical signs and laboratory tests over a minimum follow-up of two years.
Interpretation:

The study suggests that DAIR-Plus may be a viable option for select chronic knee megaprosthesis infections, potentially avoiding more invasive procedures, with implications for patient management.

Limitations:
  • Small sample size may limit generalizability of results.
  • Retrospective design may introduce bias in patient selection and outcome assessment, which should be explicitly stated.
  • Lack of clarity in defining treatment protocols and outcomes across existing literature.
Conclusion:

DAIR-Plus and PTSE can be effective for chronic PJIs in knee megaprostheses, but careful patient selection and further studies are needed to optimize treatment strategies and validate findings.

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