An artificial ligament prosthesis which is notable in that it comprises a layer totally or partly consisting of PCL fibres. The ligament prosthesis is a biodegradable and “biointegrable” artificial ligament which makes it possible to take away all the apprehensions and uncertainties due to non-degradable synthetic supports. It is a prosthetic structure inspired by and similar to the native tissue, which is biodegradable while being sterilisable. It can optionally be seeded in order to facilitate the formation of functional tissues with controlled cell and tissue activity, having the required mechanical properties. The prosthesis maybe slowly resorbable in order to be gradually replaced with a functional tissue identical to that of the native ligament.