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Unnecessary Routine Use of Mycobacterial Cultures in Patients With Periprosthetic Joint Infections
Marjorie Golden1, Anne Spichler Moffarah1, Christopher Kerantzas2
1Section of Infectious Diseases, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA.
Abstract:
Accurate diagnosis ensures appropriate therapy of periprosthetic joint infection (PJI). Since mycobacterial PJI is rare, routine testing is inappropriate. We reviewed hip and knee PJI at our institution over 28 months. Mycobacterial cultures were routinely sent with rare positivity. Mycobacterial cultures should be sent only when there is clinical suspicion.
Insights
Routine mycobacterial cultures for periprosthetic joint infection (PJI) are rarely positive and often unnecessary. Testing should be reserved for cases with specific clinical suspicion to ensure accurate diagnosis and appropriate therapy.
Area of Science:
- Orthopedic surgery
- Infectious diseases
- Diagnostic microbiology
Background:
- Periprosthetic joint infection (PJI) requires accurate diagnosis for effective treatment.
- Mycobacterial PJI is an uncommon complication of joint replacement surgery.
Purpose of the Study:
- To evaluate the utility of routine mycobacterial cultures in diagnosing PJI.
- To determine the appropriate indications for mycobacterial culture in PJI cases.
Main Methods:
- Retrospective review of hip and knee PJI cases over a 28-month period.
- Analysis of the frequency and yield of mycobacterial cultures.
Main Results:
- Mycobacterial cultures were routinely performed for PJI cases.
- The positivity rate for routine mycobacterial cultures was low.
- Most PJI cases did not involve mycobacterial pathogens.
Conclusions:
- Routine mycobacterial cultures are not cost-effective or diagnostically beneficial for all PJI cases.
- Mycobacterial cultures for PJI should be selectively ordered based on clinical suspicion.
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