title: Current strategies in multiphasic scaffold design for osteochondral tissue engineering: A review.
abstract: The repair of osteochondral defects requires a tissue engineering approach that aims at mimicking the physiological properties and structure of two different tissues (cartilage and bone) using specifically designed scaffold-cell constructs. Biphasic and triphasic approaches utilize two or three different architectures, materials, or composites to produce a multilayered construct. This article gives an overview of some of the current strategies in multiphasic/gradient-based scaffold architectures and compositions for tissue engineering of osteochondral defects. In addition, the application of finite element analysis (FEA) in scaffold design and simulation of in vitro and in vivo cell growth outcomes has been briefly covered. FEA-based approaches can potentially be coupled with computer-assisted fabrication systems for controlled deposition and additive manufacturing of the simulated patterns. Finally, a summary of the existing challenges associated with the repair of osteochondral defects as well as some recommendations for future directions have been brought up in the concluding section of this article.
authors.affiliation: Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio, 45056.
authors.forename: Azizeh-Mitra
authors.initials: AM
authors.lastname: Yousefi
authors.affiliation: Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia Campus, Malaysia.
authors.forename: Md Enamul
authors.initials: ME
authors.lastname: Hoque
authors.affiliation: Biomedical and Pharmaceutical Technology Research Group, Nano Research for Advanced Materials, Bangalore, Karnataka, India.
authors.forename: Rangabhatala G S V
authors.initials: RG
authors.lastname: Prasad
authors.affiliation: Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, Ohio, 45056.
authors.forename: Nicholas
authors.initials: N
authors.lastname: Uth
mesh_terms: D001847:Bone Diseases / Q000628:therapy*; D002357:Cartilage Diseases / Q000628:therapy*; D006801:Humans; D023822:Tissue Engineering; D054457:Tissue Scaffolds
keywords: additive manufacturing; biological gradient; finite element analysis; multiphasic scaffold; osteochondral tissue engineering