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Metal Hypersensitivity or Missed Periprosthetic Joint Infection? A Critical Review
Orthopedics
|January 3, 2022
Summary
Metal hypersensitivity (MHS) is a controversial cause of painful joint replacements. Current diagnostic methods inadequately rule out periprosthetic joint infection (PJI), necessitating better research to differentiate MHS from PJI.
Area of Science:
- Orthopedics
- Infectious Disease
- Allergy & Immunology
Background:
- Metal hypersensitivity (MHS) is a debated cause of painful total joint arthroplasty.
- Periprosthetic joint infection (PJI) is a difficult-to-diagnose cause of implant failure and pain.
Purpose of the Study:
- To critically review the literature on MHS diagnostic workup.
- To assess if current methods adequately differentiate MHS from PJI.
Main Methods:
- Literature review of studies investigating MHS in total joint arthroplasty.
- Critical analysis of diagnostic protocols for MHS and PJI.
Main Results:
- Current literature lacks adequate diagnostic workup to distinguish MHS from PJI.
- Methods to exclude PJI before diagnosing MHS are insufficient.
- There is a significant overlap in symptoms between MHS and low-grade PJI.
Conclusions:
- Assessing patients for PJI is crucial before diagnosing MHS.
- Further well-designed clinical trials are needed to establish diagnostic protocols.
- Differentiating MHS from low-grade PJI requires improved diagnostic strategies.
