Department of Orthopaedics;
Department of Musculoskeletal Tumor;
Henan Cancer Hospital;
Zhengzhou University;
Department of Pathology;
Tongji Hospital;
Tongji Medical College;
Huazhong University of Science and Technology;
Department of Chemistry;
Huazhong University of Science and Technology;
poly(lactic-co-glycolic; acid); microspheres; bone; morphogenetic; protein-2; unsaturated; polyphosphoester; bone; regeneration;