The invention provides novel compositions of hydroxyapatite and block co-polymers, methods of their preparation, and uses thereof, wherein the co-polymers have degradable hydrophobic blocks and hydrophilic blocks for stable interfacing with hydroxyapatite, resulting in stable polymer-hydroxyapatite suspensions. The super-hydrophilicity, strengthened mechanical integrity, and retained structural integrity of the HA-PELA composite in aqueous environment represent major advantages over the HA-PLA composites for skeletal tissue engineering applications.
