The Lions placed LaPorta (back) on injured reserve Saturday.
LaPorta thus will miss at least the next four games due to the back injury that didn't allow him to practice this week before Detroit ruled him out for Week 11 action Friday. His next chance to play will be Sunday, Dec. 14 at the Rams. In the meantime, Brock Wright (ankle) and Ross Dwelley will handle TE duties for the Lions.