Evaluation of the three-dimensional relative positional relationship of talus and calcaneus using Go-ICP

- Positional relationships of bones important for staging of ankle osteoarthritis -

Abstract

A lot of elderly people need to care for joint disease, and one of the treatments for ankle osteoarthritis is artificial joint replacement surgery. Estimating the relative positional difference (alignment) between the bone before the deformation and the deformed bone, artificial joint replacement surgery can be performed effectivity. The purpose of this study was to evaluate a three-dimensional bone relative positional relationship of the talus and the calcaneus of ankle osteoarthritis using Go-ICP algorithm. The three-dimensional bone model created by stacking the CT images is overlapped by using the Go-ICP algorithm, and the bone relative positional relationship of each patient can be estimated. Using the proposed method, the amount of the rotation in the Y-axis showed a significant difference in Stage 3B compared to healthy subjects in the talus and calcaneus.