Kacmarek (hamstring) was a limited participant in Wednesday's practice, Marcel Louis-Jacques of ESPN.com reports.
Kacmarek may have picked up the injury during the Dolphins' Week 7 win over the Jets, when he logged 34 snaps (29 on offense, five on special teams) without showing up on the box score otherwise. The rookie third-rounder will have two more opportunities to return to practice in at least a limited capacity before Sunday's game against the Patriots.