Kyle Shanahan confirms Weston Richburg is done for the season with a torn patella tendon. Dee Ford re-aggravated hamstring, expected to be out for at least three weeks. D.J. Jones has an ankle sprain, Sherman with a grade 2 hamstring, K'Waun Williams in concussion protocol #49ers pic.twitter.com/ldb7LmGCn2

— Jake Hutchinson (@hutchdiesel) December 9, 2019

It looked bad when it happened and MRI results confirmed it on Monday: 49ers center Weston Richburg has a torn right patella tendon and is done for the season.

After playing the majority of last season with a torn quadricep, Richburg missed almost all of the preseason before starting in every game so far this year. He’s been a key cog of the offensive line and has had a mostly impressive and resurgent season, alongside right guard Mike Person.

He was replaced four minutes into the third quarter by backup center Ben Garland, and head coach Kyle Shanahan confirmed that will be the plan going forward. The 49ers put up 20 points after Richburg’s injury, but Garoppolo was sacked three times (was not sacked once prior to that).

Defense dealt multiple injuries

Also injured, again, is Dee Ford. Shanahan said last week the team was being cautious to not rush Ford back in order to not re-aggravate his hamstring. Despite that precaution, Ford did re-injure that hamstring strain on Sunday, and is expected to be out “probably be least three weeks.” Shanahan confirmed that because it’s a re-aggravation, it’s worse than the initial hamstring strain he sustained, and will therefore take longer to recover. He’s out until the playoffs.

D.J. Jones still has an ankle sprain (it sounded from Shanahan like it was re-aggravated) and the team is waiting for his results to come back, while Richard Sherman has a grade two hamstring strain and will “probably be a couple weeks.” K’Waun Williams is currently in concussion protocol. Jullian Taylor is expected to be out for another week with an elbow ligament issue, and Jaquiski Tartt (rib fracture) will be evaluated on Wednesday.

Roster moves are likely to come.

“Yeah, we think so,” Shanahan said. “We definitely don’t know quite now. There are a lot of moving parts here, but definitely anticipate we’re going to have to do something.”

Other injuries

• Marquise Goodwin (knee, ankle) is dealing with “chronic stuff” and the team is evaluating treatment options.
• Dante Pettis (knee sprain) is viewed as hopeful to return to practice.