When the San Francisco 49ers hit the practice field last Wednesday, Matt Maiocco of NBC Sports Bay Area counted 15 players who did not participate due to injuries. That list included several running backs.

Jerick McKinnon continues to rehab the torn ACL he suffered in September. Matt Breida recently suffered a slightly torn pectoral muscle during a workout. Also on the list is Raheem Mostert, who had a setback with his recovery from the broken forearm which ended his 2018 season.

Mostert's recovery timeframe was pushed back by about a month after needing to repeat the surgery to repair the damage. Both Mostert and Breida are expected to be healthy for training camp. That much was already known. Mostert, however, recently spoke to NBC Sports Bay Area about the second surgery.

"I wasn't anticipating having a second surgery, but the bone wasn't healing right, and that's basically what it came down to," Mostert said via Jennifer Lee Chan. "I had a conversation with my doctor after the first surgery, and he said it was a possibility. It was my ulna that was more complicated because it actually shattered instead of just a clean break."

The situation has left Mostert frustrated because he wants to be out there with his teammates. At the same time, he knows he has to do what is best for his recovery. The 49ers have limited Mostert during organized team activities, which conclude this week.

Mostert sounds confident that those players sitting out practices because of injuries will be able to contribute once healthy.

"We all know we are missing time right now," Mostert said. "But it's one of those things; we know what we bring to the table. We know what we can do, and we have training camp coming. We have plenty of time to get our bodies right."

The 49ers will hold a three-day mandatory minicamp after OTAs conclude. Players will then enjoy about six weeks off before reporting back to Santa Clara in late-July for training camp.