[Bilateral-velour blood vessel prostheses produced by the Center for Research and Development of the Textile Industry (TRICOMED) in Lódź. Personal experiences].

Two-year observations on 17 patients after the implantation of bilaterally velour vascular prostheses were made. In the postoperative course 5 prostheses underwent occlusion. Special attention was given to the behaviour of the prostheses above and below the knee-joint. The velour vascular prostheses made by the Research Centre Tricomed in Lódź could be a good alternative to other grafts in the surgical treatment of occlusion located in the above knee but in occlusions below the knee they can be used only exceptionally.