Fig. 4

Flow chart of the study. KL, Kellgren–Lawrence grading; HKA, Hip–knee–ankle; HTO, High tibial osteotomy; hUCB-MSC, allogenic human umbilical cord blood-derived mesenchymal stem cell
Flow chart of the study. KL, Kellgren–Lawrence grading; HKA, Hip–knee–ankle; HTO, High tibial osteotomy; hUCB-MSC, allogenic human umbilical cord blood-derived mesenchymal stem cell