Overview
- Bosa has been largely sidelined in 49ers training camp since early August because of inflammation and tendinitis in his right knee after a revision ACL reconstruction.
- Coach Kyle Shanahan said Tuesday that Bosa is making measurable progress and that the team is managing him week to week with a possible return to full practice after the second preseason game.
- Independent orthopedic surgeons called a revision ACL a “different beast,” warning that a second reconstruction usually brings longer, less predictable recovery and that returning to normal can take about 12 to 18 months.
- There are encouraging on‑field signs — reporters observed Bosa running without a support sleeve after the preseason opener — but experts say persistent quad tendinitis and prior knee surgeries raise the risk of lingering tendon problems.
- Bosa’s availability will directly affect the 49ers’ pass rush and roster planning this season, and the team must balance a short‑term comeback push with the long‑term durability concerns surgeons outlined.