(Reuters) - French Open finalist Karolina Muchova faces a further spell on the sidelines after having surgery for a right wrist injury that has kept her out of action for the last five months, the world number 10 said.

The 27-year-old Czech enjoyed one of her best seasons last year, finishing runner-up to Iga Swiatek at Roland Garros before reaching the U.S. Open semi-finals in September, where she sustained the injury.