Gaga has not tweeted since.
A news release announcing postponements Tuesday said the 26-year-old singer, whose real name is Stefani Germanotta, was suffering from synovitis, an inflammation of the joints. She underwent tests Wednesday morning that showed she had a labral tear in her right hip, however. The labrum is a layer of muscle that helps holds the ball-shaped hip joint in place. The news release says the surgery will require strict downtime.
The tour, in support of her second album “Born This Way,” began last April in Asia and was one of 2012′s highest grossing.
Pollstar reported the tour made more than $161 million in 2012 with an average attendance of more than 31,000, making it the fifth-highest grossing tour.