Objective To study the effect of basic fibroblast growth factor (bFGF) and hyaluronic acid gel (HAG) combined with freeze dried bone allograft in repairing segmental bone defect and to explore their mechanism.

• 目的 探讨碱性成纤维细胞生长因子 (b FGF)和透明质酸凝胶 (HAG)复合异体冷冻干燥骨修复节段性骨缺损的能力及作用机制。