3D MODELING AND SIMULATION OF TOTAL ANKLE REPLACEMENT: A CASE STUDY

Abstract

This study proposes a new method for
implantation of an ankle joint endoprosthesis. Key to this
methodology is the customization and sizing of the implant
using patient-specific geometry that is obtained using a
combination of computerized tomography and finite element
modeling. Computer modeling of the customized ankle
implant also provides information related to the forces that
will act upon the endoprosthesis, including pressure. Actual
three-dimensional modeling of the ankle allows for preimplantation
assessment of the endoprosthesis prior to
operative intervention as well as to determine the optimal
meniscus thickness that will go with the new customized
endoprosthesis. The methodology was also used in
calculating which bone density and what amount of bone
removal would provide the best outcome for the customize
implant and meniscus. This study will provide desirable
results for total ankle joint replacement by increasing the
life of the implant as well as providing patient satisfaction.

Index Terms ⎯ 3D modeling and simulation, total ankle
replacement, computerized tomography, customized implant,
and patient satisfaction.