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Does Timing Matter? Postoperative Risk and the Optimal Timing for Total Joint Arthroplasty Following COVID-19
Lane McCoy1, Gabrielle Helm1, Tyler Calkins1,2
1Washington University School of Medicine, St Louis, MO, USA.
Arthroplasty Today
|July 6, 2026
Summary
Timing elective hip or knee replacement after COVID-19 infection is crucial. Delaying surgery >12 weeks post-infection may reduce complication risks, especially for total hip arthroplasty.
Area of Science:
- Orthopedic Surgery
- Infectious Disease Epidemiology
- Public Health
Background:
- Optimal timing for elective arthroplasty after COVID-19 infection is not well-defined.
- Limited data exist on arthroplasty outcomes stratified by COVID-19 recovery intervals.
- Early postoperative risks are recognized, but specific recovery periods require further investigation.
Purpose of the Study:
- To investigate the association between the timing of elective total hip arthroplasty (THA) and total knee arthroplasty (TKA) after COVID-19 infection and postoperative complication risks.
- To determine if delaying arthroplasty beyond specific intervals post-COVID-19 infection is associated with improved patient outcomes.
- To compare complication rates in patients undergoing arthroplasty at different intervals after COVID-19 infection versus those without prior infection.
Main Methods:
- Retrospective cohort study including 37,272 THA and 57,158 TKA patients.
- Patients with pre-operative COVID-19 infection were stratified into three groups based on timing relative to surgery: <4 weeks, 4-12 weeks, and >12 weeks.
- Outcomes including prosthetic joint infection, sepsis, revision surgery, deep vein thrombosis, and pulmonary embolism (PE) were compared to a control group without prior infection.
Main Results:
- Surgery within 4 weeks of COVID-19 infection increased risks of sepsis (THA RR: 2.36; TKA RR: 2.27) and PE (THA RR: 1.74; TKA RR: 2.39).
- For THA, deep vein thrombosis risk remained elevated at 4-12 weeks (RR: 1.49), with persistent modest increases in sepsis and PE beyond 12 weeks.
- TKA showed no increased systemic risk beyond 4 weeks, and prosthetic joint infection and revision rates were lower when surgery occurred >12 weeks after infection.
Conclusions:
- Elective THA and TKA within 4 weeks of COVID-19 infection are linked to higher systemic postoperative complications.
- While risks generally decrease with longer recovery intervals, some complications may persist beyond 12 weeks for THA.
- Findings support a timing-based strategy for scheduling elective arthroplasty after COVID-19 infection to mitigate risks.
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