Immobilisation element and additive manufacturing method for making same

A method for manufacturing an individualized immobilization element for the non-invasive immobilization and/or mobilization of at least a segment of a body part of a patient at a predetermined position relative to a reference and/or in a predetermined configuration, the method comprising:

• providing a data set that comprises a three-dimensional image of an outer contour of at least a portion of the segment of the body part to be immobilized and/or mobilized;
• and
• manufacturing of at least a part of the immobilization element by rapid manufacturing of a shape based on said data set, using a polymeric material containing a thermoplastic polymer having a melting point less than or equal to 100° C.,
• wherein the polymeric material contains a nucleating agent capable of enhancing crystallization of the thermoplastic polymer, and
• wherein at least a portion of an inner surface of the shape has an inner contour which is complementary to the outer contour of the segment of the body part to be immobilized and/or mobilized.