"Rajon Rondo and Rasheed Wallace were limited during the Boston Celtics' practice session Monday.

Rondo, who suffered muscle spasms during the Eastern Conference finals against the Orlando Magic, then landed hard on his back during a first-quarter drive in Friday's clinching Game 6, participated in what Celtics coach Doc Rivers estimated was 3/4 of the practice, but was held back with eyes towards Thursday's Game 1 of the NBA Finals against the Los Angeles Lakers.

Wallace developed back spasms during Game 5 against Orlando, then departed in the fourth quarter of Game 6 when the symptoms worsened. Rivers held the reserve big man out of contact drills Monday and remains concerned about his availability moving forward.

Rondo was on the court and active during 5-on-5 drills to close out the session; Wallace watched from the sidelines.

"Rondo felt pretty good, he went 75-80 percent of practice," said Rivers. "Rasheed is not right yet, he did the skeleton offense stuff, but other than that, we didn't allow any contact. So if we have a concern right now with anybody, [Wallace] would be the only one.""