49ers | Thursday practice report for 49ers

San Francisco 49ers OG Spencer Burford (neck), DE Jordan Elliott (knee), LB Nick Martin (concussion), RB Christian McCaffrey (non-injury), WR Ricky Pearsall (ankle, knee) and OT Trent Williams (non-injury) did not participate in practice Thursday, Dec. 18. LB Tatum Bethune (ankle), CB Renardo Green (neck), DE Yetur Gross-Matos (hamstring) and DE Sam Okuayinonu (ankle) were limited during practice. QB Kurtis Rourke (knee) fully participated in practice.