Hip Replacement Simulator for Predicting Dislocation Risk

This paper reports development of a novel haptic 3D computer-based hip replacement simulator. A haptic device provides a kinesthetic interface in a virtual environment to conduct hip surgery. Predictive software enables modelling the risk of hip dislocation which was missing from previous simulators. The developed neural network autonomously matches compatible implant components from a library of industry standard part codes and sizes. The parameter driven simulator enables patient-specific modeling of femur and acetabulum. Combining haptic feedback with 3D graphics, the simulator enables training and assessment of orthopedic surgeons. The simulator includes haptic feedback for the orthopedic tools including reamer, saws, hip stems, acetabular cup implants. The hip replacement simulator allows surgeons to practice placing the stem and cup, providing a haptic sense of touch to replicate the in-vivo procedure. The novel capability to assess risk of dislocation could reduce post-operative dislocation. Enhancing the skill and accuracy of trainee hip surgeons can reduce the number of revision surgeries required, extend the life of artificial hip implants and improve patient safety, reducing costs for the health service.