Mostert (knee/ankle) was a non-participant at Wednesday's practice, Marcel Louis-Jacques of ESPN.com reports.
Mostert played through knee and ankle injuries Weeks 11 though 16, but he was inactive for this past Sunday's 56-19 loss to the Ravens. After sitting out to begin Week 18 prep, he'll now have two more chances to mix into drills before the team potentially makes a ruling on his status for Sunday's regular-season finale against the Bills with the AFC East title on the line. Rookie De'Von Achane (toe/ribs) was a limited participant Wednesday, so Miami's top two options out of the backfield continue to be banged up.