Chris Iwelumo still hopes to play a part in Scotland's World Cup qualifying campaign while admitting he is unlikely to be fit to face Norway on 12 August.The Wolves striker, 30, suffered a broken metatarsal in a pre-season friendly against Perth Glory last week.
"I'll do whatever I can to get myself fit," he said. "We will know more after the operation and take it from there.
"I'll be getting an operation on Tuesday and then basically I'll be going into a rehab programme."
Iwelumo limped off during the 1-0 victory over Glory following a tangle of legs with former Leeds player Jacob Burns and X-rays later revealed a break.
The Scot is also doubtful for Wolves' return to the Premier League in England, Wanderers facing West Ham three days after his country's trip to Oslo.
But he is hoping to have returned to fitness in time for the double-header against Macedonia and Netherlands at Hampden in September.
Scotland sit second in Group Nine behind the Dutch and ahead of Macedonia, Iceland and Norway but are desperate to pick up maximum points to ensure a place in the play-offs as one of the best-placed runners-up.
"I'll be trying to maintain the fitness that I have just now," said the twice-capped Iwelumo. "I'm in pretty good shape.
"I just want to keep on top of it and look after myself as much as possible."
Iwelumo's absence means he will have to wait longer to make amends for his well-publicised failure to score against Norway when the sides last met at Hampden, the striker missing an open goal in what ended a goalless draw.
However, he thought George Burley had sufficient cover for the trip to Oslo and the remaining games.
"It's a fantastic squad and there are some great strikers there," said Iwelumo, who won his second cap in a friendly against Argentina.
"The importance of those matches is unbelievable, but we've got good players there, good characters.
"The manager knows what he is doing and hopefully we can get the right result for the country."