The 45-year-old singer had a torn meniscus in his left knee which he got operated on July 22, reported Contactmusic.
"I wanted to thank all of you for the well wishes and let you know I'm feeling great. I may be in a knee brace the next time you see me on the stage, but I'm looking forward to rocking Mississippi on Friday night!," he said.
The meniscus is a rubbery disc that cushions the knee.