关键词：骨头；缺陷（材料）；凝胶；基因工程
摘 要：The 'Fracture Putty' project was initiated to develop better, faster and more efficient methods to treat difficult fractures. This contract supported study of hydrogel polymers, which are polymerized under direct control of the operating surgeon, and are also designed for biologic cleavage by osteoclast specific proteases. Processes in bone growth and repair were studied in cell cultures, mice, rats, sheep, pigs, and feasibility of lymphatic imaging was demonstrated in humans. We believe this system is safe and efficacious and will lead to profound enhancements in patient care.