Review Question - QID 215797

A 28-year-old female recreational runner presents with chronic right lateral ankle pain. She reports several ankle sprains over the past several years. She localizes her pain to her posterior fibula with increasing pain while walking on uneven surfaces. Physical exam reveals tenderness to palpation along the posterior aspect of the lateral malleolus, and pain is reproduced with resisted ankle eversion. No subluxation of the peroneal tendons is appreciated and she has a negative anterior drawer; her hindfoot is supple. Her current radiograph is depicted in Figure A. What most likely contributes to the development of this patient's symptoms?