 In a statement on his official website, Petty's wife and daughter said he had multiple medical problems, including emphysema, knee difficulties "and most significantly a fractured hip".He was prescribed pain medication for these problems and informed on the day of his death that his hip had worsened to a more serious injury.The statement read, "[it] is our feeling that the pain was simply unbearable and was the cause for his overuse of medication.[..]