"It's been bothering him for some time, but Joe is one not to complain," Nets coach Jason Kidd said before the game. "This is for him to get some rest and we'll re-evaluate him tomorrow and see how he feels."
Johnson said the injury has been bothering him for the "past few weeks," but he's been trying to gut it out. Johnson hopes to be back for Thursday night's game against the Spurs.
"It just feels like it's not getting better. It's just hard, it's like I've been on one leg," Johnson said.
"Now my foot was kind of starting to hurt on my left leg [the same foot he had a cortisone shot in during the playoffs last season], so I don't wanna get it to a point where I'm compensating and hurting something on my other leg, and then it lingers over throughout the playoffs or the next few weeks."
Johnson said there is no structural damage to his knee.
"We've done X-rays. Everything's good. The doctors told me the only thing that's gonna help me is rest," Johnson said. "And I'm just doing the necessary things I need to do to stay on top of it, to calm this tendinitis down so I can get back out there as soon as possible."
It's only the second game Johnson will miss this season. He sat out Dec. 20 in Philadelphia due to personal reasons.
The seven-time All-Star, who was selected by the coaches as an Eastern Conference reserve for the Feb. 16 game in New Orleans, had been averaging 9.6 points on 36.4 percent shooting in his last five games.
Alan Anderson will start in Johnson's place.
Brooklyn will be without reserves Andrei Kirilenko (sore right calf) for a third straight game and Andray Blatche (bruised left hip) for a second straight game. The Nets are 12-5 entering Monday's play with Kirilenko in the lineup and 8-20 without him.
In other news, Kidd was named Eastern Conference Coach of the Month for January after his team compiled a 10-3 record.
"It's a great honor for those guys in that locker room because they're playing at a high level and it's a very nice recognition," Kidd said, "but it's for those guys that are playing, and those guys are playing very well right now."