Shridhar Chillal, the Guinness Book of World Record holder for world's longest fingernails, had his nails cut off. They're going to be preserved in a museum.
According to Guinness article on the subject, the procedure had become necessary.
He only grew the nails on his left hand, keeping his right hand trimmed. Due to years of growing his nails and their weight, his left hand is permanently handicapped; he cannot open his hand from a closed position or flex his fingers.
"I am in pain. With every heart beat all five fingers, my wrist, elbow and shoulder are hurting a lot and at the tip of the nail there's a burning sensation always."