The 41-year-old Slipknot guitarist and his brother, Andrew Thomson, 35, were both responsible for the assault that left the pair in hospital, police say.
Police were called to Thomson’s home in Des Moines, Iowa, early in the morning.
Mickael Thomson had been stabbed in the back of the head.
The brothers are charged with disorderly conduct by fighting and are due in court March 30.
Officers say the fight started inside and moved outside after becoming physical.
According to local reports, Slipknot’s manager says Mick Thomson’s injuries won’t stop the band performing.
Slipknot is due to start touring in April when they play the Fort Rock festival in south Florida.
The band will also headline the Friday night of this year’s Download festival.
Image source: Wikimedia Commons President-elect Donald Trump celebrated his election victory at the Ultimate Fighting…
Millions of voters across the US chose to return Donald Trump to the White House…
Donald Trump declares victory in the US election as he addresses jubilant supporters in Florida.…
Stocks around the world are rising as Donald Trump appears to be on the cusp…
Donald Trump has won Pennsylvania, North Carolina and Georgia and taken a lead over Kamala…
Quincy Jones, the celebrated musician and producer who worked with Michael Jackson, Frank Sinatra, Ray…