Bone tissue engineering has emerged as a promising alternative in cases of bone loss, overcoming problems of rejection and donor scarcity associated to the clinical used bone grafts [12]. By combining three-dimensional struc- tures (3D-scaffolds, cells and growth factors, bone tissue engineering seeks to achieve a long lasting and fully func- tional regeneration of bone [3]. Materials with high hydro- philic properties appear suitable for mimicking the aqueous in vivo environment. For this reason, hydrogels