Congratulations on your son earning his degree. His desire to serve is another well done in my book.
There are a million stories in the Naked City that is the military...unfortunately, whatever he decides, he'll need to get the shins fixed prior to entering any program in the military, officer or enlisted. Any commissioning path or enlisted entry program will be very difficult for him.
I wish him the best of health moving forward.
BTW, because I had my Tib and Fib broken while being hit by a car, I had lengthy issues with Lisfranc stuff:
https://www.foothealthfacts.org/conditions/lisfranc-injuries
I finally decided to relax and do the recommended rehab on the schedule the PT told me to follow....not easy for me since I knew more then I do now. Dirk has a few year to figure this out physically.