Pisa Tinoisamoa has arthroscopic knee surgery

The Chicago Bears have arguably had the healthiest roster in the NFL this season, but they took a hit when coach Lovie Smith announced this afternoon that strong-side linebacker Pisa Tinoisamoa has had arthroscopic surgery on his right knee.

Tinoisamoa missed Sunday’s victory at Detroit, the second game in the last three he’s been sidelined, after swelling in the knee flared up last week. At the time, sources said the hope was he wouldn’t need a scope this late in the season and that the matter would settle. But with an eye toward having the productive performer ready for the stretch run, the Bears made the decision to take a look in the knee. Smith said the hope is he will be back on the field soon, but it would not be a surprise if he’s at least two weeks away, maybe a little longer.

“He needed it done right now,'' Smith said, according to Vaughn McClure of the Chicago Tribune.

Tinoisamoa has 47 tackles and has been a major contributor on the highly ranked defense. His backup Nick Roach was lost Sunday with a bruised hip, although Roach said the injury was minor. That forced the Bears to turn to Rod Wilson, who made three tackles in a reserve role.

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Brad Biggs covers the Bears for the Chicago Tribune

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