Efficacy of Serum-Free Cultured Human Umbilical Cord Mesenchymal Stem Cells in the Treatment of Knee Osteoarthritis in Mice

BACKGROUNDWe investigated the efficacy of intra-articular injection of human umbilical cord mesenchymal stem cells (hUC-MSCs) for the treatment of osteoarthritis (OA) progression in the knee joint. Although many experimental studies of hUC-