Judge Ruth Bader Ginsburg of the Supreme Court is "standing" after a crash that broke her ribs

Judge Ruth Bader Ginsburg, of the US Supreme Court, is already up and working in her hospital room, a day after she broke three ribs in autumn, said her nephew late Thursday when from the Hollywood premiere of a movie about his life.

Ginsburg, an innovative liberal lawyer who, at age 85, is the oldest US Supreme Court justice, was hospitalized Thursday after falling in her office at the court, a court spokeswoman said.

"The last time I heard that she was working, of course, because what else would she be doing, and was joking," said her nephew Daniel Stiepleman at the film's premiere "On the basics of sex", about a case of discrimination based on grounds Ginsburg was tried in 1972 as a young lawyer.

"I can not promise that they were good jokes, but they were jokes," said Stiepleman, who wrote the script of the film with the participation of the judge herself.

Ginsburg, who has made a name for herself as a women's rights advocate, is one of four Liberals sitting on the tribunal. She was appointed in 1993 by Bill Clinton, then president.

The conservative majority of the court was reinstated last month when the Senate confirmed the appointment of Republican President Donald Trump, Brett Kavanaugh, at the conclusion of a contentious bid process in which Kavanaugh denied a allegation of sexual assault from his youth.

Ginsburg returned home after the fall, but lived an uncomfortable night and went to George Washington University Hospital on Thursday morning, court spokeswoman Kathy Arberg said in a statement.

The tests showed that Ginsburg had fractured three ribs on the left side and that she had been admitted for observation and treatment, Arberg added. The court will hear its next arguments on November 26.

If Ginsburg was unable to continue serving, Trump could replace her with a conservative, moving the court further to the right. A potentially dominant 6-3 conservative majority would have major consequences on issues such as abortion, the death penalty, the right to vote, the rights of homosexuals and freedom of religion.

As the oldest justice, Ginsburg is closely monitored for signs of deteriorating health. She rebounded from previous medical problems and has already fallen twice at home in 2012 and 2013, resulting in rib injuries. She was treated in 1999 for colon cancer and again in 2009 for pancreatic cancer, but did not miss any discussion sessions, either.

In 2014, doctors placed a stent in her right coronary artery to improve blood flow after she felt discomfort after a routine exercise. She was released from hospital the next day.

Trump went to court Thursday for a ceremony welcoming Kavanaugh to the country's highest court. Kavanaugh was sworn in last month in his lifetime job. The president sat with the first lady, Melania Trump, in front of the marble-walled court, near the judges mahogany bench, without making any public remarks.

Some congressional Republicans, including Senate Majority Leader Mitch McConnell, and Senator Lindsey Graham, an ally of President Trump, were present. The event occurred a day after Trump fired Jeff Sessions as Attorney General; Matthew Whitaker, whom Trump named as interim alternate of Sessions, participated.