Perkins is sidelined because he tore the medial collateral and posterior cruciate ligaments in the knee trying to grab a rebound in the first quarter. In 2008, Bynum could do nothing but sit and watch as an injury kept him out of the Finals against Boston, a series Los Angeles lost in six games.

At times, Bynum has been more of a spectator than a participant in this series, but he sounded certain yesterday that his knee can survive one more game.

“For sure, definitely,’’ he said. “I’m going to try to stay out there as long as I can and go through as much pain protection as I can.’’

Bynum asked to be taken out of Game 6 in the third quarter because of pain and swelling in his knee. He played 1:42 in the third and sat out the rest of the half, playing a total of 15:53 for the game.

Bynum put up his strongest performance of the series in Game 2 — scoring 21 points, blocking 7 shots, and grabbing 6 rebounds in 39 minutes. But the effort came in a 103-94 loss. Since then, Bynum’s playing time and production have been limited. He played 32 minutes in Game 5 but had just 6 points and 1 rebound in the loss.

After Game 6, Bynum wished Perkins the best. He was part of the play, getting tangled up with Perkins when the injury occurred.

“It’s unfortunate what happened to him,’’ said Bynum. “I know where he’s at, so I wish him the best, and I hope he’ll be able to play.’’

The Celtics have options to compensate for Perkins’s loss.

“You know, it’s funny, I was sitting on the bench, and they got Rasheed Wallace and Kevin Garnett on the court at the same time, and those guys have had great careers,’’ Lakers forward Lamar Odom said. “Glen Davis is a fighter, as well.’’

When Bynum is out, Odom tends to get the vast amount of playing time. After averaging a double-double against Phoenix in the Western Conference finals, Odom is averaging 8.3 points and 5 rebounds a game in the Finals.

“We expect a tough game,’’ said Odom.

Monique Walker can be reached at mwalker@globe.com.