NorHA hydrogels were synthesized with various compositions and 3D printed via in situ photo-crosslinking. The process was cytocompatible and used to print cell-laden hydrogels for cartilage engineering. The employment of combinatorial hydrogels permitted identification of bioinks with optimal microenvironments towards the formation of neocartilage. Ultimately, this approach will be useful towards designing patient-specific implants for the treatment of focal defects and eventually osteoarthritis.
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