Injury expert, and 49ers fan, Stephania Bell gives her thoughts on Ahmad Brooks kidney laceration. She is a physical therapist, a board-certified orthopedic clinical specialist and a certified strength and conditioning specialist.
Mike Sando was able to get some of her thoughts. Here are a few of them.
If it is a very tiny laceration, more superficial (or more toward the 'outer surface' of the kidney), this injury might well heal on its own and heal completely without further issue -- relatively quickly. A more severe injury could cause much more bleeding and in some instances require surgery, although that is far less common.
"Unless Brooks' injury is more serious than it sounds on the surface, I would expect that he will be able to return. The question becomes when. While I certainly can't offer a specific timetable from here (and even the 49ers couldn't give a precise one because it all depends on how his healing progresses), I can say that the re-evaluation in two weeks will probably dictate whether looks well enough to return to practice. Expect more time before they allow contact."
From the sound of it, since it is a small cut, it looks like Brooks won't miss any serious time. He will miss the 49ers-Colts preseason opener, and is most likely sitting out the Minnesota game. Hopefully he returns quickly enough in time for the season opener in Seattle.