The Indianapolis Colts signed free agent running back Michael Hill to the active roster and put guard Hugh Thornton on injured reserve Tuesday.

Thornton is sidelined with a shoulder injury after playing in 10 games and starting eight this year. He returned from a knee injury during Week 17 but did not start and was not active for the Colts’ wild-card playoff game against the Cincinnati Bengals last Sunday.

In two years with the Colts, Thornton has played in 24 games and started 20. He also has started two playoff games.

Hill was on the Colts’ practice squad in November before he was signed to the Washington Redskins’ practice squad in December.

In eight games as a rookie in 2013, Hill rushed for 23 yards on nine carries and caught two passes for 23 yards. In college, Hill set a Missouri Western State career record with 4,969 rushing yards.