Date of Publication : August 2026

Abstract: Background: Fracture non-union is still considered a big deal, especially with respect to long bone fractures from high-energy injuries. While juxta-articular and intra-articular fractures may have the option of replacement surgery, the biologic healing of a diaphysis of the healing of fracture ends is dependent upon the stability of the fixation mechanically. The Diamond Concept emphasizes the importance of combining mechanical and biological factors, however, traditional internal fixation systems provide a static environment. This can cause stress shielding or too little stimulus for callus formation. This study discusses a new magnetically responsive dynamic plate-screw system for non-invasive post-operative mechanical modulation.
Method: From medical-grade Stainless Steel 304 (SS304) helps to fabricate The system consists of a low-profile bone plate and specialized screws. Magnetic properties were imparted to the screw via an impulse magnetization procedure performed with the Impulse 2k228e magnetizer. Human-like 3D-printed TBL bone models were employed for biomedical validation. Design optimization was performed using CAD & Finite element analysis.
Result: You can use this method in both clinical and preclinical studies to tweak the distance between bone fragments after they’ve been implanted, and you won’t need another surgery to do it. Computer modelling showed that the system lined up perfectly with the 3D-printed TBL bone surface. Tests also proved that the internal screw could be controlled magnetically to apply both compressive and distractive forces between the bone fragments.
Conclusion: The obtained magnetically responding system prototype combines the adjustability of the external fixator used in open fractures with the stability offered by the internal fixation system, an extra-medullary plate. It provides a promising tool for creating a mechano-biological environment in the treatment of complex and resistant non-unions by enabling controlled dynamization.

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