Circulating miR-126-3p is a mechanistic biomarker for knee osteoarthritis. Study of 145 pts w/ #OA undergoing knee or hip arthroplasty or arthroscopy. miR-126-3p highest in subchondral bone, fat pad &synovium, not cartilage. IV or IA miR-126-3p given to mouse model of kneeOA https://t.co/DzudhYAK8E