A Novel Bone Substitute with High Bioactivity, Strength, and Porosity for Repairing Large and Load-Bearing Bone Defects.
Li, JJ
Dunstan, CR
Entezari, A
Li, Q
Steck, R
Saifzadeh, S
Sadeghpour, A
Field, JR
Akey, A
Vielreicher, M
Friedrich, O
Roohani-Esfahani, S-I
Zreiqat, H
- Publisher:
- WILEY
- Publication Type:
- Journal Article
- Citation:
- Advanced healthcare materials, 2019, 8, (8), pp. e1801298
- Issue Date:
- 2019-04
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Full metadata record
Field | Value | Language |
---|---|---|
dc.contributor.author | Li, JJ | |
dc.contributor.author | Dunstan, CR | |
dc.contributor.author | Entezari, A | |
dc.contributor.author | Li, Q | |
dc.contributor.author | Steck, R | |
dc.contributor.author | Saifzadeh, S | |
dc.contributor.author | Sadeghpour, A | |
dc.contributor.author | Field, JR | |
dc.contributor.author | Akey, A | |
dc.contributor.author | Vielreicher, M | |
dc.contributor.author | Friedrich, O | |
dc.contributor.author | Roohani-Esfahani, S-I | |
dc.contributor.author | Zreiqat, H | |
dc.date.accessioned | 2020-07-08T04:43:45Z | |
dc.date.available | 2020-07-08T04:43:45Z | |
dc.date.issued | 2019-04 | |
dc.identifier.citation | Advanced healthcare materials, 2019, 8, (8), pp. e1801298 | |
dc.identifier.issn | 2192-2640 | |
dc.identifier.issn | 2192-2659 | |
dc.identifier.uri | http://hdl.handle.net/10453/141741 | |
dc.description.abstract | Achieving adequate healing in large or load-bearing bone defects is highly challenging even with surgical intervention. The clinical standard of repairing bone defects using autografts or allografts has many drawbacks. A bioactive ceramic scaffold, strontium-hardystonite-gahnite or "Sr-HT-Gahnite" (a multi-component, calcium silicate-based ceramic) is developed, which when 3D-printed combines high strength with outstanding bone regeneration ability. In this study, the performance of purely synthetic, 3D-printed Sr-HT-Gahnite scaffolds is assessed in repairing large and load-bearing bone defects. The scaffolds are implanted into critical-sized segmental defects in sheep tibia for 3 and 12 months, with bone autografts used for comparison. The scaffolds induce substantial bone formation and defect bridging after 12 months, as indicated by X-ray, micro-computed tomography, and histological and biomechanical analyses. Detailed analysis of the bone-scaffold interface using focused ion beam scanning electron microscopy and multiphoton microscopy shows scaffold degradation and maturation of the newly formed bone. In silico modeling of strain energy distribution in the scaffolds reveal the importance of surgical fixation and mechanical loading on long-term bone regeneration. The clinical application of 3D-printed Sr-HT-Gahnite scaffolds as a synthetic bone substitute can potentially improve the repair of challenging bone defects and overcome the limitations of bone graft transplantation. | |
dc.format | Print-Electronic | |
dc.language | eng | |
dc.publisher | WILEY | |
dc.relation.ispartof | Advanced healthcare materials | |
dc.relation.isbasedon | 10.1002/adhm.201801298 | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | 0304 Medicinal and Biomolecular Chemistry, 0903 Biomedical Engineering, 1004 Medical Biotechnology | |
dc.subject.mesh | Tibia | |
dc.subject.mesh | Animals | |
dc.subject.mesh | Sheep | |
dc.subject.mesh | Bone Substitutes | |
dc.subject.mesh | Bone Regeneration | |
dc.subject.mesh | Porosity | |
dc.subject.mesh | Tissue Scaffolds | |
dc.subject.mesh | X-Ray Microtomography | |
dc.subject.mesh | Biomechanical Phenomena | |
dc.subject.mesh | Printing, Three-Dimensional | |
dc.subject.mesh | Animals | |
dc.subject.mesh | Biomechanical Phenomena | |
dc.subject.mesh | Bone Regeneration | |
dc.subject.mesh | Bone Substitutes | |
dc.subject.mesh | Porosity | |
dc.subject.mesh | Printing, Three-Dimensional | |
dc.subject.mesh | Sheep | |
dc.subject.mesh | Tibia | |
dc.subject.mesh | Tissue Scaffolds | |
dc.subject.mesh | X-Ray Microtomography | |
dc.title | A Novel Bone Substitute with High Bioactivity, Strength, and Porosity for Repairing Large and Load-Bearing Bone Defects. | |
dc.type | Journal Article | |
utslib.citation.volume | 8 | |
utslib.location.activity | Germany | |
utslib.for | 0304 Medicinal and Biomolecular Chemistry | |
utslib.for | 0903 Biomedical Engineering | |
utslib.for | 1004 Medical Biotechnology | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Engineering and Information Technology | |
pubs.organisational-group | /University of Technology Sydney/Faculty of Engineering and Information Technology/School of Biomedical Engineering | |
pubs.organisational-group | /University of Technology Sydney | |
utslib.copyright.status | open_access | * |
dc.date.updated | 2020-07-08T04:43:39Z | |
pubs.issue | 8 | |
pubs.publication-status | Published | |
pubs.volume | 8 | |
utslib.citation.issue | 8 |
Abstract:
Achieving adequate healing in large or load-bearing bone defects is highly challenging even with surgical intervention. The clinical standard of repairing bone defects using autografts or allografts has many drawbacks. A bioactive ceramic scaffold, strontium-hardystonite-gahnite or "Sr-HT-Gahnite" (a multi-component, calcium silicate-based ceramic) is developed, which when 3D-printed combines high strength with outstanding bone regeneration ability. In this study, the performance of purely synthetic, 3D-printed Sr-HT-Gahnite scaffolds is assessed in repairing large and load-bearing bone defects. The scaffolds are implanted into critical-sized segmental defects in sheep tibia for 3 and 12 months, with bone autografts used for comparison. The scaffolds induce substantial bone formation and defect bridging after 12 months, as indicated by X-ray, micro-computed tomography, and histological and biomechanical analyses. Detailed analysis of the bone-scaffold interface using focused ion beam scanning electron microscopy and multiphoton microscopy shows scaffold degradation and maturation of the newly formed bone. In silico modeling of strain energy distribution in the scaffolds reveal the importance of surgical fixation and mechanical loading on long-term bone regeneration. The clinical application of 3D-printed Sr-HT-Gahnite scaffolds as a synthetic bone substitute can potentially improve the repair of challenging bone defects and overcome the limitations of bone graft transplantation.
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