Jared Sullinger had two herniated discs in his back before undergoing season-ending surgery.
Jared Sullinger's agent, David Falk, said that the Celtics knew his client would eventually have to get back surgery.
The decision for Jared Sullinger to undergo back surgery was made because the Celtics were told that the procedure "would likely" fix Sullinger's back problems permanently.
Jared Sullinger underwent back surgery Friday and is out for the season.
Jared Sullinger (back) was not at Celtics shootaround on Friday and is questionable against Orlando.
Doc Rivers said he's not concerned about Jared Sullinger's back spasms, which could keep the rookie out of Friday's game.
Jared Sullinger (back) was receiving treatment on Thursday, and his status for Friday's game is unknown.
Jared Sullinger left Wednesday's game in the first quarter due to back spasms and he will not return.
Doc Rivers said that Jared Sullinger will remain in the starting lineup.
Doc Rivers said that Jared Sullinger was inserted into the starting lineup to create more energy.
Jared Sullinger shot 3-of-5 from the field for seven points to go with four rebounds, two assists and three steals in 22 minutes during his third start of the season on Sunday.
The Celtics will start Jared Sullinger over Brandon Bass at PF on Sunday
Jared Sullinger played just 15 minutes in a loss on Thursday, scoring seven points with three rebounds and one block against the Knicks.
Jared Sullinger logged his fourth double-double of the season with 12 points and 10 boards in 26 minutes against the Cavs on Tuesday.