Biomechanical Numerical Calculation and Evaluation of Equine Hoof Foot Osteotomy
Background:The deformities of rigid equinovarus foot are very complex.The common clinical diagnostic methods such as CT imaging cannot accurately describe the deformities of the foot,and it is difficult to make surgical plans according to the characteristics of the deformities.Objective:Based on the CT data of patients with rigid equinovarus foot,a three-dimensional fi-nite element model of rigid equinovarus varus was created.The numerical simulation was conducted for patients undergoing sur-gery,and the stress concentration of the metatarsal bone,the high stress area of the deep soft tissue below the metatarsal bone and the displacement of the medial arch were analyzed.To provide the basis for the selection of surgical plan.Methods:Using the foot CT scan data of volunteers,foot pseudo-directional reconstruction was carried out to obtain the finite element model with complete structure and high geometric similarity,and the three surgical schemes were numerically simulated,and the biomechanical prop-erties of the foot were quantitatively evaluated.Results & Conclusions:When the Angle of tibial root bone increased in the osteoto-my program,the stress concentration of the same foot gradually shifted from the fourth and fifth metatarsal bone to the second metatarsal bone,which was more in line with the stress situation of normal foot.The stress distribution of bone tissue and soft tissue stress concentration were the best when the valgus was 5°.However,the displacement of the medial arch first increased and then de-creased,and the maximum value was 4.2mm when 3 was reached.Considering that reducing the pain of patients and enhancing the therapeutic effect of version 5°is the best surgical scheme.
Equinovarus FootReverse EngineeringBiomechanicsFinite Element Analysis
万方数据
维普
