the short answer to your question is that the development of osteoarthritis does seem more prevalent in joints that have been injured in the past. so you may development osteoarthritis of your foot in the future. that said the midfoot is not a common place to develop osteoarthritis. (the big toe is a more common target for arthritis. ) in terms of whether or not you suffered a lisfranc injury it does sound like it from your description. a midfoot injury is deemed a "lisfranc fracture" (or dislocation or injury) when any of the metatarsal bones separates from the tarsus which is the cluster of bones from the heel to the midfoot. this usually happens due to a crushing injury like dropping a jar of pickles on your foot. athletes in certain sports are more prone to lisfranc injuries. these include football and snowboarding. lisfranc injuries occur in varying degrees of severity. slight dislocations often are treated just as you described with some type of splinting (an air cast). severe dislocations require surgery. hope this helps and that you get better soon!
what is the likelihood of arthritis in joints near the base of fractured metatarsals #2 and #3? . if metatarsals #2 and #3 are fractured at the base near the joints of the midfoot what is the likelihood of arthritis particularly if metatarsal #2 is comminuted at the joint? is this a true lisfranc fracture? (aircast and no surgery)