In an announcement on Twitter, the world No. 1 told her fans that an MRI revealed a herniated disk in her back. Later, she spoke with the New York Times. "I’m really positive in this moment ...

An MRI of Vogler’s neck pinpointed a ... Using X-ray-guided imaging, Ajayi removed the herniated disc and replaced it with an artificial one, which is commonly made of mixed metals, ceramics ...