When Marquis Daniels  stumbled to the floor Sunday afternoon – just 59 seconds into the second quarter – it was an all-too-familiar sight for Doc Rivers . He immediately flashed back to Game 5 of the Eastern Conference finals against the same Magic team when Daniels fell awkwardly to the ground. It seemed like the exact same injury.
After Sunday’s game, the Celtics  announced that – for all intents and purposes – it was.
The team announced that Daniels, who quickly regained full movement in all extremities, has a preexisting condition in his spinal cord that makes him vulnerable to the spinal cord “bruise” he suffered as he hit the ground Sunday.
“And this one looked worse,” Rivers said in a somber tone after the 91-80 win over the Magic at TD Garden. “I don’t actually know how our players kind of got back their senses that quickly, because they all knew it, too.
The Celtics trailed 24-17 at the time but gathered themselves to outscore the Magic, 74-56, the rest of the way.
“I knew it immediately,” Rivers added. “It was no doubt. Right when he went down, I was already out on the floor. Gilbert [Arenas ] or someone was standing near him and I just told him, ‘Don’t touch him,’ because, you could see it was not good.’
The good news was that Daniels had full function of his motor skills following a scary injury in the second quarter of Sunday’s game at TD Garden, according to Celtics general manager Danny Ainge, who left to visit him at New England Baptist Hospital.
“Marquis is doing well,” Ainge said. “I was just with him at New England Baptist Hospital. He’s moving, he’s fine. His arms and legs are fine.”
Ainge was flanked by team doctor Brian McKeon, who announced that Daniels will be out “indefinitely” and that guard has a pre-existing condition that contributed to Sunday’s freak injury, sustained one minute into the second quarter. Daniels fell awkwardly to the court after driving to the right on Gilbert Arenas and remained motionless for over four minutes before being wheeled out on a stretcher.
“He basically bruised his spinal cord,” McKeon said. “He’ll be out indefinitely. We’re getting all the tests at the Baptist and we’ll have more information [Monday]. We’ll get CT scans, MRIs and serial examinations.”
McKeon confirmed that Sunday’s injury was directly related to the same injury sustained in Game 5 of the Eastern Conference finals last spring, when the team announced at first that Daniels had a concussion.
“It’s not a concussion,” McKeon announced. “This is the same type of neck injury that he had so it’s just a little bit worse. He’s got some spine issues in the past that have been addressed by other teams and so we’ll just have to see how it plays out in the next few days.’
“I think he was scared when he was out on the court because he couldn’t really move there for a short period of time so that scared him,” Ainge said. “But he’s had some issues with this before and some tingling in his body and his arms and things before so I think he wasn’t scared, he was fine. He had it last year against Orlando in Game 5 and I’m not sure before that. He’s had a couple of episodes throughout his career.’
On Sunday, it was apparent that – when and if Daniels returns this season – he’ll be dealing with a lot more than just getting back in game shape.