Yes, Gout Can Occur in a Total Knee Replacement
Yes, gout can definitely occur in a knee after total knee arthroplasty (TKA), and patients with a history of gout face a significantly elevated risk of recurrent gout attacks post-operatively, with over 50% experiencing flares within 2 years of surgery.
Risk of Developing Gout After TKA
Even patients without prior gout history can develop new-onset gout following TKA. A large propensity-matched cohort study found that TKA patients have a 15.6% higher risk of developing gout compared to matched controls (HR=1.156), with this risk being particularly elevated in females and older adults 1. This increased risk persists across various follow-up durations and analytical models.
Recurrent Gout in Patients with Pre-existing Disease
For patients with a prior gout diagnosis, the risk is dramatically higher:
- 53.8% of patients with previous gout experienced recurrence within 2 years post-TKA, compared to only 3.6% of controls (OR: 30.86) 2
- These recurrent gout attacks are associated with serious complications including increased rates of prosthetic joint infections (PJI), prosthetic loosening, and revision procedures at both 1-year and 2-year follow-up 2
Critical Diagnostic Pitfall: Gout Mimicking Infection
The most dangerous clinical scenario is misdiagnosing periprosthetic gout as acute prosthetic joint infection, as both present with:
- Fever and joint pain
- Elevated inflammatory markers (leukocytes, ESR, CRP)
- Elevated synovial fluid cell counts
- Joint dysfunction
This misdiagnosis can lead to unnecessary surgical debridement, prolonged antibiotic therapy, and joint malfunction 3. Current MSIS criteria for periprosthetic infection cannot exclude gout flare 3.
Essential Diagnostic Step
Always perform synovial fluid crystal analysis in any suspected periprosthetic infection scenario, especially in patients with:
- History of gout or hyperuricemia
- Diabetes mellitus
- Long-term glucocorticoid use
- Negative bacterial cultures despite clinical presentation suggesting infection 3
Gout attacks can occur immediately post-operatively or weeks to months after surgery 4. In cases where chalky whitish crystals are found intraoperatively, thorough irrigation and debridement followed by appropriate anti-gout therapy yields good outcomes 4.
Clinical Implications and Monitoring
Patients with gout undergoing TKA face:
- Higher day-of-surgery and 90-day costs 5
- Increased odds of infection (OR 1.229), cardiac arrest (OR 1.354), pneumonia (OR 1.161), and hematoma (OR 1.204) 5
- Need for aggressive perioperative monitoring and preventive management
Clinicians should implement preventive measures and early intervention strategies for all TKA patients with gout history, including optimization of urate-lowering therapy preoperatively and maintaining heightened vigilance for both gout flares and infectious complications postoperatively 1, 2.