[Blood vessel replacement by new large (over 6 mm) and small (to 1.5 mm) lumen vascular prostheses].

Histologic studies on 1,672 functionally implanted synthetic vascular grafts of various fabrics revealed 1. an industrially coated large-porous textile prosthesis to heal faster and without less complications than conventionally preclotted ones, 2. a neointimal endothelium to regenerate only from the vascular stumps, 3. the fate of neointima and of in vitro seeded endothelium to depend on the type of the vascular graft and 4. a new type of fine fibrillar vascular (polyurethane) microprostheses to have functioned in clinically relevant lengths with excellent results.