Robotic knee replacement sharpens alignment, but the gains patients feel are modest

The edition in brief

Today's orthopaedics edition leads on robotic total knee arthroplasty. A meta-analysis of 52 studies found robotic surgery improves component alignment and reduces outliers, with lower blood loss and shorter stay, but only modest short-term differences in what patients report and longer operative times — the long-term clinical payoff is still unproven. A large meta-analysis of GLP-1 receptor agonists found no effect on bone density or fractures and no change in osteoarthritis symptom scores, but a consistent loss of lean body mass, mostly tied to weight loss and of uncertain functional importance. A double-blind trial of colchicine for knee osteoarthritis was negative for pain, function and effusion, despite improving inflammatory biomarkers, so it does not support colchicine for symptom relief. A pearl reaffirms that a fragility fracture is osteoporosis until proven otherwise and should trigger bone-health treatment. The practice-changer is a target-trial-emulation study of periprosthetic hip fracture: once immortal-time bias was removed, early surgery showed no short-term mortality advantage, suggesting the 48-hour native-hip-fracture standard should not be assumed here solely to cut mortality — though avoidable delay is still not justified.