Lady Gaga posted on her blog that she had hip surgery and it “happened so fast”.

She thanked her fans, saying they gave her “a lot of strength”. The singer said that as she was wheeled to surgery, she reflected on her fans.

She wrote: “Sometimes you are so brave that it terrifies me. I wonder how it’s even possible.”

Lady Gaga cancelled more than 20 dates on the remainder of her Born this Way Ball tour, which began last April. She originally postponed four dates last week after experiencing difficulties during her concert in Montreal.

She explained to fans on Twitter that she had hurt herself while performing some time ago.

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