Why the study?
A significant number of patients complain of persistent pain of unknown origin after total knee arthroplasty, and identifying preoperative chronic pain predictors could enable proper education and realistic expectations.
What are the preoperative risk factors for persistent pain following total knee arthroplasty?
Population
64 patients scheduled for total knee arthroplasty
Comparison
Patients with no pain vs patients with any pain post-surgery
Design
Prospective cohort study
Follow-up
Approximately 6 months
Key result
Every 12 months of preoperative pain increased the risk of persistent pain 6 months following total knee arthroplasty by a factor of 1.27 (p=0.009).
Authors
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Longer preoperative pain duration associated with post-TKA persistent pain; hypothesis-generating and should not yet change surgical timing.
Cohort (n=64)
What are the preoperative risk factors for persistent pain following total knee arthroplasty?
Relative Risk: 1.27
p-value: p=0.009
Longer duration of preoperative pain is a significant risk factor for persistent chronic pain following total knee arthroplasty, suggesting surgical intervention should not be delayed.
Chodór et al. (2022) conducted a cohort in Idiopathic osteoarthritis of the knee (n=64). Preoperative duration of pain vs. Shorter preoperative duration of pain was evaluated on Persistent pain at 6 months following surgery (Risk increase 1.27 per 12 months, p=0.009). Every 12 months of preoperative pain increased the risk of persistent pain 6 months following total knee arthroplasty by a factor of 1.27 (p=0.009).
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