WALTHAM — The Celtics  received good news on Thursday when an MRI revealed that Glen Davis  has only left knee patellar tendinitis and no major structural damage. The power forward, who has started at center many times this season in place of Shaquille O’Neal  and Jermaine O’Neal , said he will need only a week to rest the injury before returning to action.
Celtics coach Doc Rivers  confirmed that assessment after practice on Thursday.
“Nothing serious but he may be out for three, four or five days,” Rivers said. “But it’s nothing serious. He’ll miss Friday [vs. Golden State]. I think he’ll miss a couple of games. But overall, that’s pretty good.”
Davis, who injured the knee going up for a dunk with 49 seconds left in Wednesday’s game against the Suns, said he’s been playing with the soreness all season and initially aggravated the knee in Game 7 of the NBA finals  last year in Los Angeles.
‘I’ve been playing with it all year, since Game 7 of last year,’ Davis said. ‘It’s a sigh of relief but you don’t want to be hurt anyway. You don’t want to sit out. You can’t take that approach. It could be worse. I’m just glad I’m here [watching practice], getting healthy and getting ready to play.’
Davis entered last night tied for the team lead with Paul Pierce  and Ray Allen  in games played this season, having played in all 59 contests. His hopes of making it a perfect 82 were dashed Thursday when he was told rest was needed to make sure he will be ready for the playoffs, beginning in April.
“It kind of [stinks],” Davis said. “I kind of wanted to play the whole season. I tried the best I can. I just have to get healthy now and get ready for the playoffs.”
Speaking of Allen, ironically, he came to practice Thursday and told Rivers and trainer Ed Lacerte that he had ‘soreness’ in his legs and was given the day off. He is expected to be ready for Friday against the Warriors.
Rivers said Shaquille O’Neal ran ‘skeleton’ sets with the team on Thursday during practice but has not been cleared yet to take part in full contact practice. Delonte West  (sprained right ankle) is still not ready to practice but was shooting around. Rivers said West will “definitely” miss the next two games this weekend against the Warriors Friday and at Milwaukee Sunday night.