Roseanne Barr is expected to undergo surgery after taking a fall in San Francisco on Tuesday.

The Roseanne actress revealed Wednesday on Twitter that she slipped and broke her kneecap in San Francisco’s Golden Gate Park while visiting her son.

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“Fell broke kneecap! Did Hillary drone me? Lol,” Barr, 63, first shared in a series of tweets on Wednesday that accompanied a swollen picture of her left knee. “i will be in bed on crutches for three months! OMG,” she later posted.

Although the actress’ fall resulted in a break that will require surgery, she had her sister by her side — and thanked the San Francisco Paramedics for transporting her to the hospital.

“guys, i slipped in GG park in SF wh visiting my son,broke my kneecap in 3 places. My sister was w me, took control of situation. Surgery Mon,” she tweeted. “i really want to thank the very kind & wonderful #SFParamedics who had to cart my fat ass out of Golden Gate Park over 2 hospital yesterday!