Norway’s King Harald V was hospitalized on Friday, the palace confirmed.

He was admitted to the main hospital in Oslo and will undergo surgery on his right knee for a tendon issue.

The 83-year-old king's surgery is scheduled for Saturday and he will be on sick leave until Feb. 14, the royal household said. His son and heir to the throne, Crown Prince Haakon, is taking over his father’s duties.

Harald underwent a heart valve replacement last year to improve his breathing. Doctors ruled out COVID-19.

NORWAY'S KING HARALD V, 83, TO UNDERGO HEART VALVE OPERATION

The king’s aortic valve was replaced with an artificial valve in In 2005. Such valves have an expected lifespan of 10-15 years, the royal household said.

King Harald V of Norway will undergo surgery on his right knee for a tendon issue.

King Harald V of Norway will undergo surgery on his right knee for a tendon issue. (Rune Hellestad/Getty Images)

Harald is Norway’s head of state, but his duties are ceremonial, and he holds no political power.

He ascended to the throne following the death of his father, King Olav, on Jan. 17, 1991.

CLICK HERE TO GET THE FOX NEWS APP

The country’s first native-born king since the 14th century, he won hearts in his egalitarian country by leading the national mourning in 2011 for the 77 victims of mass killer Anders Behring Breivik.

The Associated Press contributed to this report.