Ghana assistant coach Herve Renard played down concerns over John Pantsil following the opening game of the African Cup of Nations.
The West Ham defender was carried off on a stretcher after complaining of dizziness at the end of Ghana's 2-1 victory over Guinea.
Pantsil has been sent to hospital for checks but Renard and team-mate Laryea Kingston have said he felt much better shortly after the game.
"He had a knock to his jaw after a rough challenge during the first half," Renard told reporters.
Kingston added: "He felt weird at half-time, he could not remember anything from the first 45 minutes.
"Now he's fine, he's just been sent to the hospital for a couple of checks."
Le Roy blasts pitch
Ghana coach Claude Le Roy slammed the state of the pitch and suggested organisers had got their priorities wrong.
"The first thing is not the quality of the armchair in the VIP room but it is the quality of the pitch and in more than 20 years in Africa, it's the worst pitch I've ever seen in my career," he said of the surface at the Ohene Djan stadium.
"We have a technical team which likes to play one-touch football and this pitch badly affected our game.
Guinea coach Robert Nouzerat was disappointed with his side's performance.
"This is the worst match Guinea have played under me," he said. "My regret is that we didn't play the way we should have."
"The next game (against Morocco) will be decisive for us."