SANTA CLARA The 49ers added quarterback Colin Kaepernick to their practice participation report Thursday with a back injury. Kaepernick was not listed on Wednesday’s report and went through Thursday’s practice in full, signaling that the issue is unlikely to cause him to miss any of Sunday’s game.
But it was the second straight year the 49ers quarterback has landed on the injury report following a Week 2 loss. Last year, he suffered a foot injury in Seattle. That issue, which Kaepernick recently revealed was a chipped bone on his forefoot and a ruptured capsule in the ball of his foot, prompted the 49ers to curtail his running while the injury healed.
It’s unknown what caused the current injury. Kaepernick took several shots, including a big one from behind by Bears defensive end Jared Allen, during Sunday’s loss. He also was in on a tackle following one of his interceptions. Kaepernick was observed doing back exercises with a medicine ball prior to Thursday’s practice.
Kaepernick, running back Carlos Hyde (calf), defensive end Justin Smith (not injury related) and tackle Joe Staley (knee) all practiced in full.
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Cornerback Tramaine Brock (toe), tackle Anthony Davis (hamstring), tight end Vernon Davis (ankle, knee), center Marcus Martin (knee) and tight end Vance McDonald (knee) did not practice.