CaO2/gelatin oxygen slow-releasing microspheres facilitate tissue engineering efficiency for the osteonecrosis of femoral head by enhancing the angiogenesis and survival of grafted bone marrow mesenchymal stem cells

CaO₂/gelatin microspheres can slowly release oxygen to support cell survival in extreme hypoxia condition and enhance osteogenesis and angiogenesis in the necrotic femoral head after being grafted with 3D scaffold and BMSCs.