For many polymers, even a small addition of the HAp filler is associated with a drastic reduction in the impact strength of the material . The same is true for PBS/nHAp composites produced by extrusion and injection molding techniques . As the filler content in the polymer-ceramic system increases, the filler particles agglomerate more and more, forming stress concentration points that lead to a significant weakening of the material. Now, it turns out that in the tested PBS-DLS/HAp materials, the addition of hydroxyapatite is even able to slightly strengthen the material against dynamic loads (Figure -sample coPBS_10%nHAp).