Scaphoid numerical simulation of the critical loading until fracture

Area of Science:

• Biomechanics
• Orthopedic Surgery
• Computational Mechanics

Background:

• Scaphoid fractures are common and can lead to significant disability.
• Numerical studies on scaphoid fractures are relatively unexplored but clinically relevant.

Purpose of the Study:

• To numerically assess scaphoid fracture under various boundary conditions, bone contacts, and loads.
• To evaluate different bone fracture criteria for scaphoid failure analysis.
• To provide a foundational understanding for future scaphoid motion modeling.

Main Methods:

• Simulated seven combinations of boundary conditions and adjacent bone contacts.
• Applied four distinct loads simulating real hand movements.
• Utilized three different bone fracture criteria for scaphoid failure analysis.

Main Results:

• Various interaction models between adjacent bones can produce similar results.
• This similarity allows flexibility in choosing models based on accuracy or computational cost.
• The study offers insights into the accuracy of bone interactions in scaphoid modeling.

Conclusions:

• The choice of interaction models in scaphoid fracture simulation can be optimized for precision or computational efficiency.
• This research establishes a basis for future investigations into scaphoid bone mechanics and injury.
• Findings support informed decisions in selecting computational models for scaphoid fracture analysis.