SANTA CLARA – Running back Jerick McKinnon was back at practice Tuesday after missing the past 18 days after undergoing treatment on his surgically repaired right knee.
McKinnon was removed from the physically unable perform list earlier in training camp but participated in just two practices before experiencing a setback. McKinnon underwent a platelet-rich plasma treatment.
The 49ers hope McKinnon will be available to play at or near the beginning of the regular season.
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McKinnon sustained a season-ending torn ACL in his right knee a week before the start of last season.
Running back Raheem Mostert, who sat out the game Saturday in Kansas City with a quad contusion, also returned to practice on Tuesday.
The following seven players did not participate in practice:
WR Jalen Hurd (back)
WR Dante Pettis (groin)
WR Trent Taylor (foot)
DL Nick Bosa (ankle)
DL Kentavius Street (knee)
CB Jason Verrett (ankle)
CB K’Waun Williams (knee)
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Street is the newest addition to the injury report with an unspecified injury to his knee. He missed his entire rookie season after sustaining a torn ACL in a pre-draft workout. Street played 20 snaps in the 49ers’ 27-17 victory over Kansas City on Saturday,