I don't want to side track this thread. But I do wish to respond to your post. (Mods, if there is a more appropriate thread to insert these posts, please feel free to move them)
Athletes can sustain an ankle twist or roll and this can be automatically assumed to be an ankle sprain. Lisfranc injuries, notably lesser ones, are not uncommonly mistaken at first for ankle sprains, especially as ankle pain may be a presenting symptom. If a subtle joint separation (which is characteristic of a Lisfranc) is not carefully looked for, it may be missed. Mathews injured his "ankle" at the very beginning of the season, and, despite continued problems, played with it throughout the season. Then after the season was completed, he was reported to have undergone surgery for a Lisfranc. There is a good possibility, that he initially suffered a mild Lisfranc separation, worsened it as the season progressed.........it was then recognized for what it was and surgery was performed. If these were the true events, it is unfortunate, in that the prognosis typically worsens with delay of diagnosis and surgical repair.