Repeated Intra-Articular Injections of Umbilical Cord-Derived Mesenchymal Stem Cells for Knee Osteoarthritis: A Phase I, Single-Arm Study

To promote the application of intra-articular injection of human umbilical cord (UC)-derived MSCs in treating osteoarthritis, investigators conducted an open-label trial to investigate the safety of repeated intra-articular injections of UC-MSCs.