Fig. (4) (Principle of our individually customized thermoplastic wrist and hand splint for patients sustaining RNP during both the duration of functional recovery with or without surgery and/or before tendon transfers): (A) Lateral radiograph of a 22-year-old female demonstrating open reduction and internal fixation of a right distal humerus shaft fracture performed in another hospital, there was an iatrogenic RNP postoperatively (axonotmesis); (B) Clinical photographs of the same patient showing that the wrist is immobilized in intrinsic plus position to avoid shortening of the antagonistic extrinsic flexor muscles in order to avoiding a secondary wrist flexion contracture, the MP II-V joints are immobilized in neutral position to avoid shortening of the antagonistic extrinsic flexor muscles of the long fingers in order to avoiding MP joint flexion contractures, the proximal interphalangeal joints are not immobilized because the intrinsic-related extension in these joints is not affected by RNP; (C) Clinical photographs of the same patient showing that the non-affected extrinsic-related flexion of the thumb is completely freed whereas the affected extrinsic-related extension and abduction of the thumb is passive realized by a flexible steel feather which is dorsally placed at the splint combined with alignment of the thumb in an abduction position, a spontaneous complete functional recovery was observed 7 months postoperatively.