Energy balance
Long-term use of GLP-1 receptor agonists (GLP-1RAs) reduces the incidence of knee surgery and slows cartilage loss velocity in knee osteoarthritis (KOA) patients with comorbid type 2 diabetes, primarily mediated by significant weight loss rather than direct anti-inflammatory effects.
If you have knee osteoarthritis and type 2 diabetes, using GLP-1RAs (like semaglutide or liraglutide) for at least two years can significantly reduce your risk of needing knee surgery and slow down cartilage wear. This benefit comes mainly from the weight loss these drugs cause, which reduces stress on your knees. While they also help with pain, the structural protection is largely weight-dependent. To maximize benefits, combine GLP-1RA therapy with resistance training to preserve muscle mass.
The association between GLP-1RA exposure and decreased incidence of knee surgery was mediated by weight reduction (mediation proportion: 32.1%), instead of glycaemic control (too small to calculate).
Why this rating
Large prospective observational cohort (n=1807) with long follow-up (mean 4.9 years), adjusted for multiple covariates, but not a randomized controlled trial.
Source
Glucagon-like peptide-1 receptor agonists as a disease-modifying therapy for knee osteoarthritis mediated by weight loss: findings from the Shanghai Osteoarthritis Cohort
Hongyi Zhu et al. · Annals of the Rheumatic Diseases · 2023
DOI 10.1136/ard-2023-223845
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