Dowell, 22, will miss two to four weeks. The Blackhawks recalled center Colin Fraser from AHL Rockford to take Dowell's spot in the lineup.
Dowell made his NHL debut Nov. 22 at Calgary, scoring a shorthanded goal for his first NHL tally. In four games with the Blackhawks, Dowell had one goal and four penalty minutes.
Fraser, 22, had seven goals, three assists and 73 penalty minutes and was plus-10 in 21 games for Rockford this season.