[Polypropylene-polyester prostheses. Experimental studies].

Polypropylene-polyester prostheses invented by the Research and Development Center of the Textile Industry in łódź are composed of two knitted polyester layers with perpendicular columns arrangement laminated by polypropylene. The prostheses were implanted in 10 pigs into the sternum and shoulder blade, the abdominal wall and peritoneal cavity. The autopsies of the animals were made 90 to 180 days after the operation. Both in bone and soft tissues, the prostheses healed up without local or general complications. The results obtained in surgical post-operative, macroscopic and microscopic examinations prove that the polypropylene-polyester prostheses fulfill the basic conditions for biomaterials. The different moulders of these materials may be used as temporary or permanent implants.