High-Fidelity Haptic Rendering for Virtual Drilling on Gradient Porous Bone in Surgery Training

Area of Science:

• Orthopedic Surgery
• Medical Simulation
• Robotics

Background:

• Femoral neck fracture surgery requires precise drilling techniques.
• Inadequate haptic feedback during orthopedic training can lead to surgical errors.
• Mastering haptic interaction is crucial for surgeons performing complex procedures.

Purpose of the Study:

• To develop a virtual drilling surgery training system with high-fidelity haptic feedback for femoral neck fracture.
• To enhance the realism of bone structure simulation for improved surgical training.
• To validate the system's effectiveness in improving surgical skills.

Main Methods:

• Utilized Triple dexel for realistic femur surface reconstruction.
• Employed multi-morphology with three periodic minimal surface (TPMS) approaches for heterogeneous bone structure simulation.
• Developed a haptic interaction algorithm integrating Triple dexel and TPMS for precise force feedback and bone chip density simulation.

Main Results:

• The haptic interaction algorithm accurately computed bone chip densities, simulating porosity variations.
• A robotic experimental platform validated the proposed force model against bovine bone experiments.
• Medical students demonstrated improved hand-eye coordination using the virtual training system.

Conclusions:

• The developed virtual drilling system provides realistic haptic feedback for orthopedic training.
• The integration of Triple dexel and TPMS effectively simulates bone properties during virtual drilling.
• The system shows potential for enhancing surgical training and improving patient safety in orthopedic procedures.