Following training on Sunday, van Gaal cycled back to the team hotel with his players and coaching staff but fell when putting away his bike.
Van Gaal was driven on a golf cart by assistant coach Henk Fraser on Monday to take training ahead of Tuesday's clash.
He was unable to physically attend Monday's news conference but told reporters via Zoom: "I am in a lot of pain. That is why I was in a buggy during training.
"Physically it is not good, but the brain is still working. I can do everything. There are means at my disposal. It doesn't look pretty, but coaching is verbal. I did everything at the training that I would have done otherwise."
When asked if he could be on the sidelines for Tuesday's qualifier, Van Gaal added: "They are looking for a solution. I know there is an elevator in the stadium."
The former Manchester United manager was taken to hospital following the accident but was discharged after the injury didn't require surgery.
"It was a scary moment for the team," Netherlands captain Virgil van Dijk told a news conference. "But we are happy that he can still lead us. It is unfortunate, but it does not affect our preparation.
"It is physical and not mental. Van Gaal is still very committed to get us to the World Cup."
The 70-year-old suffered a similar situation in 2007-08 campaign as AZ Alkmaar manager when he was in the dugout on a wheelchair after breaking his ankle and fibula.
After letting a two-goal lead slip to draw at Montenegro on Saturday, Netherlands can guarantee World Cup qualification with a point against Norway.