As if the Lakers could afford any more injuries.

Lakers forward Xavier Henry strained his right knee early in the Lakers’ game Sunday against the Philadelphia 76ers at Staples Center, and will have an MRI on Monday morning. Henry left the game with 1:14 remaining in the first quarter and went scoreless on two field goal attempts in five minutes.

It remains to be seen how serious Henry’s injury will become. But with the pain in his knee keeping him out at least for the rest of the Lakers-Sixers game, it exposes the team’s already flimsy backcourt.

The Lakers are still nursing injuries to Kobe Bryant (fractured left knee), Steve Nash (nerve issues in back) and Steve Blake (hyperextended right elbow). Lakers backup guard Jordan Farmar played in the past three games after missing the previous 10 contests because of a strained left hamstring. But the Lakers relied heavily on Xavier Henry as the team’s backup point guard because of D’Antoni feeling uncomfortable with Kendall Marshall, whom the Lakers’ recently acquired from the Development League.

“I’ve seen him play many two minutes,” D’Antoni said of Marshall, who posted three points on two shot attempts and four turnovers through two games totaling 10 minutes. “I don’t think we’re at the point where we can experiment. We’re not going to lose games because I’m experimenting.”

But with the Lakers’ roster dwindling by the day, D’Antoni may have no other choice.

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Follow L.A. Daily News Lakers beat writer Mark Medina on Twitter. E-mail him at mark.medina@langnews.com