Lady Gaga has rheumatoid arthritis and is opening up about her chronic pain in the Spring 2017 issue of Arthritis Magazine!
Longtime Little Monsters might not be surprised to see their Mother Monster talking about hip pain, though. The 31-year-old was forced to cancel the remainder of her Born This Way Ball world tour in February 2013 after suffering a massive joint tear and hip breakage requiring surgery. [Source]
I'm not quite sure where you can get a copy of Arthritis Magazine but I'm guessing you might be able to find it in the waiting room at an orthopedic surgeon's office?