Abstract
Currently available bone grafts present certain limitations such as donor-site morbidity for autografts and risk of disease transmission for allografts. These limitations suggest a need for alternative strategies. The use of polymer/ceramic composites as scaffolds for trabecular bone tissue engineering capitalizes on the benefits of both materials. Polymers are easily formed and shaped and add structural rigidity while calcium phosphates impart osteoconductivity and osteointegration. We have developed a biodegradable, microsphere-based scaffold for bone tissue engineering based on poly(lactide-co-glycolide)/calcium phosphate composite microspheres in which a nanocrystalline hydroxyapatite is synthesized within the forming microspheres.
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