Porous bovine hydroxyapatite for drug delivery.

Biomaterials derived from natural sources have considerable interest in human health care. This study reports a simple method of designing a bone drug delivery system using porous bovine hydroxyapatite (BHA). The porous BHA blocks with different porosity were fabricated by a die-pressing method using polyvinylbutyral (PVB) as a porosifier. A model antibiotic drug, neomycin sulfate (NS) was loaded in the blocks and its in vitro release...