Portugal forward Helder Postiga will miss the rest of Euro 2012 with an injury, reports suggest.

The 29-year-old suffered an injury to his right thigh and was replaced by Besiktas striker Hugo Almeida just before half time in the 1-0 win over Czech Republic.

The Portuguese Football Federation confirmed the nature of the injury, though it was initially believed that Postiga would only miss the side's semi-final clash.

However, it is believed that the knock is much more serious than expected, with the former Tottenham Hotspur man unlikely to feature again.

Postiga has been Paulo Bento's first choice striker in Poland and Ukraine and scored in Portugal's 3-2 win over Denmark in the group stages.