Case for small group discussion Chopart joint injury Case for small group discussion AOTrauma—Foot & Ankle Module 4b: Midfoot trauma—Chopart, navicular fractures Stefan Rammelt, DE

Case description 68-year-old woman Fell down a flight of stairs Day 0

Preoperative CT scans Day 3

Intraoperative images Day 7

Intraoperative images Post fixation stressing revealed no instability on the lateral side Day 7

Postoperative x-rays Day 7

1-year follow-up

Take-home messages Appropriate radiographic projections High index of suspicion—CT scans Look for injury of the opposite column Anatomic reduction of joint surfaces Use mini-distractor to aid articular reduction and restore column length Screws or anatomically shaped interlocking plates available References: Rammelt S, Grass R, Schikore H, Zwipp H. [Injuries of the Chopart joint]. Unfallchirurg. 2002 Apr;105(4):371–383; quiz 384–385. German. Rammelt S, Zwipp H, Schneiders W, Heineck J. Anatomical reconstruction after malunited Chopart joint injuries. Eur J Trauma Emerg Med. 2010;36: 196–205. Rammelt et al. Unfallchirurg. 2002;105:371–383. Rammelt et al. Eur J Trauma Emerg Med. 2010;36:196–205.