There have been quite a few questions about the durability of Chris Kaman. He's no spring chicken, and he's a big dude, which is usually a recipe for disaster. It doesn't bode well, then, that Kaman was forced to sit out the end of the season's first practice this morning with a strained back.

According to Eddie Sefko,

Kaman's injury would not be considered anything more than a blip were it not for his recent history with physical problems. He missed 19 of 66 games last season and 50 of 82 in 2010-11 with various ailments, mostly knee troubles.

The article also says that the injury isn't considered serious, and that the staff will reevaluate Kaman at tonight's second practice. The good news is, Elton Brand was available to step in at center, so the Mavericks will get to use their other new big man in his multipurpose role.

From EKS twitter:

Chris Kaman (sprained lower back) will probably have limited participation in tonight's practice and will be held out of any scrimmaging.

— Earl K. Sneed (@EKS_MavsNBA) September 29, 2012