Katherine Heigl has joked she is now "bionic" after undergoing surgery to fix a herniated disc in her neck. The former Grey's Anatomy star initially shared details about her health emergency online last week as she arrived in Los Angeles to seek medical treatment, and on Wednesday, she updated fans on her condition as she showed off her new accessory - a neck brace. "Well. . .
I am now bionic!!" Heigl declared as she began a series of posts on Twitter. "Two titanium disk now inhabit my neck and I can probably stand on my head for like hours. . .
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