NFL: 49ersí Willis undergoes knee procedure
SANTA CLARA, Calif. ó San Francisco 49ers All-Pro linebacker Patrick Willis has undergone surgery on his right knee to remove an inflamed fluid sac that kept him out of this yearís Pro Bowl.
The 49ers said the surgery, considered minor and done about a week ago, was performed by Dr. Tim McAdams and Dr. Gary Fanton at Stanford Hospitals and Clinics in nearby Redwood City.
Spokesman Bob Lange said there is no infection and no structural damage. The team will not put a timetable on Willisí return, but he isnít expected to be sidelined for long. The team will adjust his offseason conditioning and regimen as he rehabilitates.