Lisfranc Injury (midfoot ligament and/or bone injury)
Lisfranc injuries are devastating midfoot injuries where the middle of the foot, at the highest point of the foot arch comes “unzipped.” When it first happens, it can be just pain and difficulty walking. However, over time, the arch of the foot progressively collapses and the foot starts to take on an abnormal shape. At the point when the foot begins to curve outward and there arch is so low that there is a visible bump where the arch used to be, it has progressed very far. At any time a Lisfranc injury is discovered, it should be treated with surgery. There is no good non-operative treatment for a Lisfranc injury.
For an excellent (but very scientific) discussion of these type of injuries from the institution where I trained, see the video below: