What is a Lisfranc injury? A lisfranc injury is a disruption between the tarsometarsal joint complex specifically damage to the lisfranc ligament that connects the medial cuneiform to the 2nd metatarsal. How to diagnose a Lisfranc injury? X-rays are typically used to diagnose lisfranc injuries and specifically attention is paid to a widening of the gap between the medical cuneiform …