Kalil will undergo Lisfranc surgery, an operation on the mid-foot that happens as a result of broken bones, or ligaments where the metatarsal bones (toes) meet the Lisfranc joint complex (foot). Screws or plates are used to support the area.
Recovery times greatly vary, but in all cases an initial period of 6-8 weeks of non-weight bearing movement on the foot are required. Standard recovery times normally range from 3-to-5 months, although for an NFL player this can be a very different story.
Want the bright side? Kalil should be able to return in 2013 without issue.
Want the not-so-bright side? Of all the players the Carolina Panthers couldn't afford to lose this season, Kalil is at the top.
The team have not announced who will start in his absence, but even money should be on current RG Geoff Hangartner to fill the role. As a stop-gap solution he's fine, but the prospect of another 11 weeks with Garry Williams at right guard isn't so great.