Obesity alone should not rule out knee replacement surgery
Helen Saul1, Deniz Gursul2, Jonathan Evans3,4
1NIHR Centre for Engagement and Dissemination, Twickenham, UK NIHRAlerts@nihr.ac.uk.
BMJ (Clinical Research Ed.)
|October 25, 2022
Summary
Obesity increases the risk of revision surgery and mortality after primary knee replacement. Patients with obesity undergoing knee surgery reported worse outcomes, highlighting the need for weight management.
Area of Science:
- Orthopedic surgery
- Public health
- Obesity research
Background:
- Obesity is a growing public health concern.
- Knee replacement surgery is a common procedure for osteoarthritis.
- The impact of obesity on knee replacement outcomes requires further investigation.
Purpose of the Study:
- To investigate the association between obesity and outcomes after primary knee replacement.
- To examine the relationship between obesity and revision surgery, mortality, and patient-reported outcomes.
Main Methods:
- UK National Joint Registry cohort study.
- Analysis of data from primary knee replacement surgeries.
- Comparison of outcomes based on body mass index (BMI) categories.
Main Results:
- Obesity was significantly associated with an increased risk of revision surgery.
- Higher BMI correlated with elevated mortality rates post-knee replacement.
- Patients with obesity reported poorer patient-reported outcome measures (PROMs).
Conclusions:
- Obesity is a significant risk factor for adverse outcomes following primary knee replacement.
- Weight management may improve surgical success and patient satisfaction.
- Further research into optimizing care for obese patients undergoing knee surgery is warranted.
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