“…These highly favourable biological and chemical properties make chitosan, hitherto underutilized, an attractive starting material for many diverse biomedical and biorelated applications [5][6][7]. Different forms of chitosan-based biomaterials have recently been developed for biomedical purposes, including scaffolds [8][9][10][11], nanocomposites [12][13][14], tubes [15], sponges [16], coatings [17], microspheres [18], wound dressings [19] and membranes [20,21], of which, notably, those combined with hydroxyapatite are especially useful for potential applications in bone repair and regeneration.…”