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The Comparison of Biomechanical Volar and Dorsal Plating in Distal Part Radius Fractures; a Finite Element Analysis
Ali Ghaem-Maghami1, Ehsan Fallah1, Hamid Namazi2
1Department of Orthopedic Surgery, School of Medicine, AJA University of Medical Sciences, Tehran, Iran.
Objective:
To compare the stability of the radius stabilized fractured parts by volar and dorsal planting based on modeling approach.
Methods:
Ten forearm models were created based on Computed Tomography (CT) Scan images by using of Mimics software. The distal part fracture of radius was induced in the models. The stress were developed and implanted in various parts of the bone and and their displacement were evaluated in volar and dorsal inserted implants.
Results:
The results of this study showed that the stress developed in screws, implant and bony parts differed significantly between volar and dorsal plate conditions. The displacement of implant and bony parts in volar plating was more than dorsal plating (p=0.05). However, the screws displacement in dorsal plating significantly increased compared to volar plating.
Conclusion:
The stress developed in dorsal and volar implants is not too high to fail the structure. However, it seems that the irritation of soft tissue and tendon would be less in volar inserted implant than dorsal implant. It is recommended to use valor plating to be a good approach for stabilizing the distal part fracture of radius.
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