Garnett to miss time with knee injury

Kevin Garnett’s sprained right knee will cause the Boston Celtics forward to miss up to three weeks, the team said Saturday.

The 6-foot-11 Garnett suffered the injury late in the first half of Boston’s 90-85 loss Thursday at Utah when he attempted to catch a lob from teammate Paul Pierce.

After being assisted to the locker room and missing the second half, Garnett flew home to Boston Friday, where Dr. Brian McKeon diagnosed the posterior right knee muscle strain.

McKeon said the injury would need a 2- to 3-week recovery period.

Rest and ice for KG, Danny Ainge, the Celtics’ president of basketball operations, told The Boston Globe in a text message. We’re just being cautious (but) we think he’s OK.

Garnett is averaging 16.3 points and 8.8 rebounds in 53 games this season for the reigning NBA champions.