"Our player Gareth Bale has undergone today successful surgery to repair damaged tendons in his right ankle," Real said in a statement.
"The operation took place at King Edward VII Hospital in London by doctor James Calder and Real Madrid Sanitas doctor Mikel Aramberri, under the supervision of doctor Jesus Olmo, head of Real Madrid's medical services."
The 27-year-old forward has scored seven goals and set up three more in 16 starts for Real in all competitions this season.
No time frame was given for his return to action.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Zinedine Zidane's team are six points ahead of Saturday's opponents Barcelona at the top of La Liga.
(Reporting by Adriana Garcia; Editing by Toby Davis)
