Osteoarthritis

Association between weight gain and knee osteoarthritis: a systematic review

Osteoarthritis CartilagePublished Systematic review and meta-analysis of controlled trials and cohort studies

Authors' conclusion

Weight gain in adults is associated with increased clinical and structural KOA and TKR.

Study context

Population
Participants with (or at risk of) knee OA23 studies
Comparison
Weight gain vs no weight gain
Outcome
Association between weight gain and knee OA: clinical features (pain, function, quality of life), structural progression and TKR
Methodological detailsROBINS-I risk of bias, meta-analyses where appropriate
  • ROBINS-I risk of bias
  • Meta-analyses where appropriate

Pooled result

As reported in the abstract

Knee OA clinical features, structural progression and TKR
Significant detrimental effect of weight gain on pain
4 of 7 studies
Significant detrimental effect on stiffness
2 of 2 studies
Significant detrimental effect on function
5 of 6 studies
Adverse effect on cartilage
6 of 9 studies
Adverse effect on bone marrow lesions
1 of 4 studies
Adverse effect on meniscal damage
1 of 3 studies
Adverse effect on effusion/synovitis
1 of 1 study
Weight gain significantly increased total knee replacement (TKR)
3 of 6 studies
TKR per 5 kg weight gain in women (meta-analysis of 2 studies), HR
1.34 (1.18-1.51) (95% CI)
TKR per 5 kg weight gain in men (meta-analysis of 2 studies), HR
1.25 (1.16-1.34) (95% CI)

Original publication

Association between weight gain and knee osteoarthritis: a systematic review. Osteoarthritis Cartilage. Published 26 November 2022. doi:10.1016/j.joca.2022.10.023

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