BMI and Knee Pain in Osteoarthritis
Author Information
Author(s): Matthew W Rogers, Frances V Wilder
Primary Institution: The Arthritis Research Institute of America
Hypothesis
Is there a relationship between BMI and knee pain among persons with radiographic knee osteoarthritis?
Conclusion
Higher BMI is associated with a greater likelihood of knee pain among individuals with radiographic knee osteoarthritis.
Supporting Evidence
- Pain subjects had a higher mean BMI (30.4 kg/m2) compared to No Pain subjects (27.5 kg/m2).
- Adjusted odds ratios showed a positive association between BMI and pain for each elevated BMI category.
- Subjects in the Obese III category had the highest odds ratio (7.5) for knee pain.
Takeaway
If you weigh more, you might hurt more if you have knee problems. Losing weight could help your knees feel better.
Methodology
A cross-sectional study comparing BMI categories among subjects with knee pain and no knee pain.
Potential Biases
Potential for confounding factors such as knee pain leading to weight gain.
Limitations
The cross-sectional design limits the ability to determine causation.
Participant Demographics
Subjects aged 40 and older, with a mean age of 67.1 years for those with pain.
Statistical Information
P-Value
p<0.0001
Confidence Interval
1.1 – 2.4 for Pre-Obese; 1.4 – 3.8 for Obese I; 2.3 – 8.9 for Obese II; 2.8 – 20.6 for Obese III
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website