Further updates revealed the extent of the 49ers running back's injury. Here's what to know about McCaffrey's injury.

San Francisco 49ers star running back Christian McCaffrey is dealing with Achilles tendinitis in both legs, head coach Kyle ...

San Francisco 49ers star running back Christian McCaffrey isn't just dealing with Achilles tendinitis in one leg, but it's ...

San Francisco 49ers star running back Christian McCaffrey has bilateral Achilles tendinitis, meaning he has it in both legs, ...

San Francisco 49ers star running back Christian McCaffrey has bilateral Achilles tendinitis, meaning he has it in both legs, ...

Kyle Shanahan confirmed what Matt Maiocco of NBC Sports Bay Area reported on his podcast: Running back Christian McCaffrey ...

SANTA CLARA — Running back Christian McCaffrey has been dealing with issues with his Achilles tendons on both legs, 49ers ...

SANTA CLARA — Running back Christian McCaffrey has been dealing with issues with his Achilles tendons on both legs, 49ers ...

Christian McCaffrey continues to deal with his injured Achilles. The San Francisco 49ers’ star running back recently flew to ...

The San Francisco 49ers have been without star running back Christian McCaffrey due to a mysterious injury, which has now ...

San Francisco 49ers head coach Kyle Shanahan spoke to reporters via a Monday conference call, addressing the recent news that ...

When Christian McCaffrey was healthy the past two seasons, he was the 49ers' offensive identity. Now McCaffrey is out for at ...