Novel composite materials, methods of producing the same and uses thereof. The composite materials which have the shape of three-dimensional object comprise a first component formed by a thermoplastic polymer selected from the group of biodegradable polyesters and mixtures thereof, and a second component formed by particles of a woody material, having a smallest dimension greater than 0.1 mm which reinforce the polyester. The material also has regions of elasticity or softness to provide for objects having properties of flexibility or semi-rigidity in at least one dimension. The material semi-rigid materials can be molded and worked at temperatures below 70° C. and are suitable for splints and circumferential casts.
