Ravaged 49ers O-line takes another hit as McKivitz misses practice

SANTA CLARA — The depleted 49ers offensive line took another hit during practice this week. Right tackle Colton McKivitz, who was limited in practice on Thursday, did not practice on Friday due to a knee injury. His availability for the 49ers' game Monday night against the Detroit Lions is in question. The 49ers figure to send a patchwork offensive line onto the field to face the Lions (13-2) in a game featuring the two teams that met in the NFC Championship Game in January. The 49ers this week placed 11-time Pro Bowl left tackle Trent Williams and his backup, Jaylon Moore, on injured reserve. Neither will be available for the final two games of the season. The team's third option at left tackle, Spencer Burford, did not practice Thursday or Friday due to a calf injury. Left guard Aaron Banks will not play in either of the 49ers' final two games due to a knee injury. The 49ers signed offensive linemen Charlie Heck and Matt Hennessy to the active roster this week after adding Austen Pleasants for the team's Week 16 game against the Miami Dolphins. It is unclear how the 49ers will line up against the Lions on Monday night, and they are running out of options. If Burford is unable...