The San Francisco 49ers completed their final full practice of the week as the team prepares for its matchup against the Seattle Seahawks on Sunday.

The 49ers will go into the game with a shortage of healthy safeties. Jimmie Ward and Jaquiski Tartt are both out for the season after each suffered a broken arm. Adrian Colbert will not play on Sunday as he continues to recover from surgery last week on his broken right thumb, which he sustained on November 12 against the New York Giants.

The 49ers have defensive backs Antone Exum, Dexter McCoil, and Leon Hall who could help fill in during Colbert's absence.

Earlier this week, head coach Kyle Shanahan said he is hopeful to see the return of three other rookies in tight end George Kittle (ankle), wide receiver Trent Taylor (ribs), and defensive end Solomon Thomas (knee).

Taylor and Thomas are both listed as questionable for Sunday's game.

"[Thomas] has gotten better each day," Shanahan said on Friday. "Monday, he was a little rusty, as they all are coming off his MCL like he has, better Wednesday, better Thursday, and better today. By no means is he back 100-percent so we still have him listed as questionable."

Right tackle Trent Brown injured his shoulder during Thursday's practice and will be a game-time decision, according to Shanahan. He did not practice on Friday.

Below are the official injury reports for the 49ers and Seahawks. Also included is Friday's practice participation report for the 49ers, which was provided by the 49ers Communications team.

San Francisco 49ers

S Adrian Colbert (thumb)

T Trenton Brown (shoulder), RB Raheem Mostert (shoulder), WR Trent Taylor (ribs), DE Solomon Thomas (knee)

Seattle Seahawks

G Oday Aboushi (shoulder), S Kam Chancellor (neck), CB Shaquill Griffin (concussion)

RB Mike Davis (groin)

LB D.J. Alexander (shoulder), T Duane Brown (ankle), TE Jimmy Graham (ankle), G Luke Joeckel (knee), DE Dion Jordan (neck), DT Jarran Reed (hamstring), LB Bobby Wagner (hamstring), LB Michael Wilhoite (calf)

San Francisco 49ers Friday Practice

Did Not Participate In Practice
T Trenton Brown (shoulder), S Adrian Colbert (thumb)

Limited Participation in Practice
RB Raheem Mostert (shoulder), WR Trent Taylor (ribs), DE Solomon Thomas (knee)

Full Participation in Practice
DE Elvis Dumervil (not injury related), DT D.J. Jones (shoulder), TE George Kittle (ankle), LB Elijah Lee (knee), S Eric Reid (knee), T Joe Staley (not injury related)