Abstract: A prosthetic polylactide or collagen-containing scaffold material for treating osseous defects and neogenesis of bone, obtained by printing a scaffold composed of strings of polylactide and porous microstructures which allow passage and ingrowth of bone tissue. A soluble mixture of BSP and/or collagen is provided, and BSP and/or collagen is applied onto the strings and in the pores of the printed body to obtain a prosthetic material which induces tissue-directed ingrowth of bone tissue as well as repair and healing of damaged or diseased bone tissues and lesions. The prosthetic material is osseo-inductive and osseo-conductive. The BSP in the prosthetic scaffold material induces a tissue-directed growth of osseous tissue. No undirectional callous or overgrowing bone and cartilage tissue is observed.