Accession Number : ADA616641


Title :   Development of Composite Scaffolds for Load Bearing Segmental Bone Defects


Corporate Author : ARMY INST OF SURGICAL RESEARCH FORT SAM HOUSTON TX


Personal Author(s) : Pilia, Marcello ; Guda, Teja ; Appleford, Mark


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a616641.pdf


Report Date : 01 Jul 2013


Pagination or Media Count : 42


Abstract : The need for a suitable tissue engineered scaffold that can be used to heal load bearing segmental bone defects (SBD) is both immediate and increasing. During the past 30 years various ceramic and polymer scaffolds have been investigated for this application. More recently, while composite scaffolds built using a combination of ceramics and polymeric materials are being investigated in greater number, very few products have progressed from laboratory benchtop studies to preclinical testing in animals. This review is based on an exhaustive literature search of various composite scaffolds designed to serve as bone regenerative therapies. We analyzed the benefits and drawbacks of different composite scaffold manufacturing techniques, the properties of commonly used ceramics and polymers and the properties of currently investigated synthetic composite grafts. To follow, a comprehensive review of in vivo models used to test composite scaffolds in SBDs is detailed to serve as a guide to design appropriate translational studies and to identify the challenges that need to be overcome in scaffold design for successful translation. This includes selecting the animal type, the anatomical location within the animals, choosing the correct study duration, and finally an overview of scaffold performance assessment.


Descriptors :   *BONES , *COMPOSITE MATERIALS , *SURGICAL TRANSPLANTATION , CERAMIC MATERIALS , IN VIVO ANALYSIS , LOADS(FORCES) , POLYMERS , REGENERATION(PHYSIOLOGY) , TISSUES(BIOLOGY)


Subject Categories : Anatomy and Physiology
      Medicine and Medical Research
      Laminates and Composite Materials


Distribution Statement : APPROVED FOR PUBLIC RELEASE