Arthroscopic surgery is a possibility for Dallas Mavericks star Dirk Nowitzki if his sore and swollen right knee doesn't respond to a week of rest and treatment. Nowitzki, who sat out Tuesday's loss to FC Barcelona Regal in Spain, is experiencing soreness and swelling in his knee for the second consecutive training camp. It bothered him several weeks into the season last year, something he wants to avoid happening again. "We'll see how it responds," Nowitzki said, according to The Dallas Morning News. "But the longer we wait, obviously the worse it is. If we have to do something, it'd be better to do it quick. "But we're still hopeful that this is a temporary thing. If we relax and rest it for a week and see how it goes, then we'll have a better idea." Read more: http://espn.go.com/dallas/nba/story...witzki-dallas-mavericks-star-sore-knee-scoped
