Review Question - QID 211110

A 31-year-old male presents with persistent foot pain 4 months after falling from a ladder. He was treated with an ankle brace for a suspected ankle sprain at the time of injury. On exam there is tenderness about the lateral hindfoot, no laxity on anterior drawer testing, and full eversion strength. Imaging demonstrates a nonunion of the anterior process of the calcaneus (Figure 1). Which of the following mechanisms and ligaments are involved?