Spoelstra told reporters that Adebayo didn't need to undergo additional testing for an apparent wrist injury and will be "ready to go" for the potential closeout game.
"It's a little bit of everything," Spoelstra said when asked if the injury was to Adebayo's wrist, shoulder or arm. "This is a physical series. He'll be ready to go [Friday]."
Adebayo was injured after getting tangled up with Celtics star Jayson Tatum in the second half of Wednesday's Game 4 of the Eastern Conference finals. Adebayo's left wrist appeared to twist in the wrong direction, but he brushed off concerns about the ailment.
"I'm good," Adebayo said after Wednesday's game. "Just a wrong turn ... wrong little movement, nothing major."
Spoelstra also didn't sound concerned about Adebayo's injury after the game.
"He's just got a lot of ice on his body," Spoelstra said. "And that's where we are right now -- everybody's earning their ice."
Adebayo has averaged 21.5 points, 11 rebounds and 4.5 assists per game in the series against the Celtics. He played 41 minutes in the Heat's 112-109 win over Boston on Wednesday and notched 20 points, 12 rebounds, four assists and two steals.
Miami holds a 3-1 series lead over the Celtics in the best-of-seven series. Game 5 is set for Friday inside the NBA bubble near Orlando, Fla.