Shaquille O'Neal is on the mend! The starsparked some concern among fans on Sunday when he posted a photo to Twitter showing him laying down in a hospital bed with an IV attached to his arm. ET has learned that O'Neal had hip replacement surgery and is now at home resting.The basketball pro captioned the post with a message to his co-hosts, Candace Parker and Ernie Johnson, telling them he's «always watching» them, even in the hospital. «Miss y'all,» O'Neal added to the post.Parker responded, «Love ya big Fella ♥.»i’m always watching @TurnerSportsEJ and @Candace_Parker miss y’all pic.twitter.com/4tY4X6v1PjO'Neal, who celebrated his 51st birthday earlier this month, recently opened up to ET about making his health a priority.