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• W3115132068 abstract "Abstract Articular cartilage injury can lead to joint‐wide erosion and the early onset of osteoarthritis. To address this, we recently developed a rapid fabrication method to produce patient‐specific engineered cartilage tissues to replace an entire articular surface. Here, we extended that work by coupling a mesenchymal stromal cell‐laden hydrogel (methacrylated hyaluronic acid) with the porous polycaprolactone (PCL) bone integrating phase and assessed the composition and mechanical performance of these constructs over time. To improve initial construct stability, PCL/hydrogel interface parameters were first optimized by varying PCL pretreatment (with sodium hydroxide before ethanol) before hydrogel infusion. Next, cylindrical osteochondral constructs were formed and cultured in media containing transforming growth factor β3 for up to 8 weeks, with constructs evaluated for viability, histological features, and biochemical content. Mechanical properties were also assessed in axial compression and via an interface shear strength assay. Results showed that the fabrication process was compatible with cell viability, and that construct biochemical content and mechanical properties increased with time. Interestingly, compressive properties peaked at 5 weeks, while interfacial shear properties continued to improve beyond this time point. Finally, these fabrication methods were combined with a custom mold developed from limb‐specific computed tomography imaging data to create an anatomic implantable cell‐seeded biologic joint surface, which showedmaturation similar to the osteochondral cylinders. Future work will apply these advances in large animal models of critically sized osteochondral defects to study repair and whole joint resurfacing." @default.
• W3115132068 created "2021-01-05" @default.
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• W3115132068 date "2021-01-14" @default.
• W3115132068 modified "2023-09-25" @default.
• W3115132068 title "Fabrication and maturation of integrated biphasic anatomic mesenchymal stromal cell‐laden composite scaffolds for osteochondral repair and joint resurfacing" @default.
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• W3115132068 doi "https://doi.org/10.1002/jor.24969" @default.
• W3115132068 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8222412" @default.
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