![]() By virtue of the success of this technique, the percentage of distal radius fractures that are now treated with open reduction and internal fixation has risen. Volar locked plating has had an increase in popularity in the last several years. There have been several studies analyzing the biomechanical properties of a variety of these different implants. There are currently a multitude of fixation constructs available for stabilizing distal radius fractures. VLP and IMN fixation of distal radius fractures can achieve comparable stability. There was no statistically significant difference between the VLP and IMN. The VLP has higher average bending stiffness, ultimate bending strength, and resistance to 5 mm displacement than the other constructs and significantly higher ultimate bending strength than the DCPs and DNLP. The VLP was significantly stronger than the DNLP and DCPs, and the IMN and DCPs were stronger than the DNLP. Ultimate load to failure occurred at 278.2 N for the VLP, 245.7 N for the IMN, and 52.0 N for the DNLP. Bending stiffness for VLP (16.7 N/mm) was significantly higher than for DNLP (6.8 N/mm), while IMN (12.6 N/mm) and DCPs (11.8 N/mm) were similar. Dorsal bending loads were applied and bending stiffness, load to yield 5 mm displacement, and ultimate failure were measured. In 28 fresh-frozen radii, a wedge osteotomy was performed, creating an unstable fracture model and the four fixation constructs employed (DNLP, VLP, DCPs, and IMN). ![]() This study examines the biomechanical properties of these four different fixation constructs. Implants available for distal radius fracture fixation include dorsal nonlocked plating (DNLP), volar locked plating (VLP), radial–ulnar dual-column locked plating (DCPs), and locked intramedullary fixation (IMN).
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