Figure 2 3D finite element model of healthy foot, flatfoot, clubfoot, and foot with Lisfranc joint injuryA 3D solid model of foot bone was constructed by SolidWorks 2017 software, and the cartilage layer with a thickness of 1–2 mm was established on bone joint to obtain finite element model. (A) Healthy foot; (B) flatfoot; (C) clubfoot; (D) the first metatarsal fracture; (E) the second to fourth metatarsal dislocation; (F) the second to fifth metatarsal dislocation; (G) the second metatarsal fracture combined with the third to fifth metatarsal dislocation; and (H) the medial cuneiform fracture combined with second and third metatarsal dislocation.