Jaylen Brown received “pain management injections” in his injured right knee to prepare for the Celtics’ postseason run, according to a report Saturday from ESPN’s Ramona Shelburne.

Brown, who’s been dealing with a bone bruise and what the team calls a “right knee impingement,” sat out six of Boston’s last 16 games, including each of the last two. When he has played, he’s been on a minutes restriction. Brown has not topped 30 minutes since the Celtics’ March 12 loss to the Oklahoma City Thunder and logged just 22 in his last two appearances.

Earlier this month, Brown said he had a plan in place to be as healthy as possible for the playoffs. He is expected to be available when Boston’s first-round series opens next weekend, per ESPN’s report.

“I’ve had to come to grips that every night, I’m not going to feel my normal self,” he said after tallying 24 points and nine rebounds in a blowout loss to the Miami Heat. “But that doesn’t mean I still can’t make plays and things like that. So it’s just something that we are working through. Today was a good step forward. I’ve got some stuff lined up with the medical staff in order to be and feel better come playoffs. But as for now, just mentally working through not feeling great, but still able to find ways to be effective, I guess.”

As for why he played through what he’s described as a painful injury, Brown said he wanted to hone his game to be effective despite physical limitations that could linger into the playoffs. He’s also watched film of former Celtics star Paul Pierce to study how to find his shooting spots while “playing at a certain pace.”

Brown was highly productive in the Celtics’ win over the Phoenix Suns last Friday (31 points, 10-of-16 shooting, five rebounds, three assists, one turnover in 28 minutes) but much less so in Tuesday’s overtime victory over the New York Knicks, in which he did not play after the third quarter (six points, 2-of-8 shooting, five rebounds, one assist, three turnovers in 22 minutes).

“I think pain is definitely a physical thing, but it’s also a mental thing,” Brown said after the Suns game. “So Joe (Mazzulla) has allowed me, even though my team physically can see maybe I’m in a bit of pain, that they trust me to go out there and I can control my body and still be able to make plays and mentally be able to kind of push through it.

“I think that’s going to be something I’m going to have to have in my back pocket, so I’ve been just utilizing these games in order to feel things out. Things will get better, I’m sure, but if they don’t, I still have a good feel for where my baseline is at and stuff like that. Because there’s no guarantee, honestly, that rest is going to make anything better. I wish it would, but it’s kind of the cards that are laid out.”

The Celtics sat their top six players, including Brown, for Wednesday’s loss to the Orlando Magic, which came on the second night of a back-to-back. Brown then was the only Boston regular who did not play in Friday’s 130-94 victory over the Charlotte Hornets.

Boston will sit everyone again in Sunday’s regular-season finale against Charlotte at TD Garden. Brown, Jayson Tatum, Derrick White, Jrue Holiday, Kristaps Porzingis and Al Horford all were ruled out.

Boston, which will enter the playoffs as the No. 2 seed in the Eastern Conference, will face either Orlando or Atlanta in the opening round, pending the outcome of Tuesday’s 7-vs.-8 play-in game. The Magic and Hawks both went 2-1 against the Celtics this season, with Atlanta winning twice at TD Garden, but lag far behind the C’s in most statistical metrics, including net rating (Boston is second behind OKC; Orlando and Atlanta are 17th and 19th, respectively).

Davison fills final roster spot

After three seasons split between Boston and Maine, JD Davison has earned an official Celtics roster spot.

The Celtics on Saturday filled their final open 15-man roster slot — which had been left vacant for the entire season — by converting Davison’s two-way contract to a permanent NBA deal, his agent told ESPN’s Shams Charania.

It’s reportedly a two-year contract for Davison that runs through next season.

Davison has seen minimal NBA playing time since the Celtics drafted him in the second round out of Alabama in 2022 (181 career minutes across 35 appearances), but he was the Most Valuable Player of the G League this season, averaging 25.1 points, 7.4 assists and 5.2 points per game for the Maine Celtics.

The 6-foot-1 point guard was even more productive during Maine’s recent playoff run, which ended in the Eastern Conference finals. He topped 30 points in all three games, averaging 34.7 points, 13.3 assists and 2.0 blocks per contest while going 10-for-24 from 3-point range (41.7%).

With the parent club, Davison has been stuck behind White, Holiday and Payton Pritchard on the backcourt depth chart, limiting him to 15 mostly garbage-time appearances this season.

White, Holiday and Pritchard all are signed through at least the 2026-27 season, but the Celtics could look to shed some of their soon-to-be record-setting payroll this offseason to avoid further luxury tax penalties, and the 34-year-old Holiday is a potential trade candidate.

“I think it’s always tough being here because we’re balancing winning and developing at the same time, and it takes a level of patience and understanding the long term and still trying to win in the short term,” Mazzulla said earlier this month. “I think (Davison’s) leadership has really grown, and just his ability to impact the game in different ways. … (He’s) just getting more comfortable playing with the ball and without the ball when he’s with us. He usually has it most of the time in Maine, but here, not as much. But just putting his leadership and his patience into seeing what he can look like as he continues to get better and better.”

The Celtics took a similar step to fill their final roster vacancy last season, converting center Neemias Queta’s two-way deal before their NBA championship run. Queta only played in blowouts during last year’s playoff run but had a larger role this season as Boston’s fourth big man behind Porzingis, Horford and Luke Kornet.

Davison, Queta and the rest of the Celtics’ deep reserves should see ample playing time Sunday against Charlotte.