The Fourth Hand by John Irving
Patrick Wallingford is an unusually attractive man but only a second-rate television news reporter who never seems to get the really good stories. Unfortunately, he becomes a headline himself when a lion bites his hand off during the filming of a piece on a circus in India. After that incident, his career takes an unexpected turn, as does his overly-steamy sex-life. when a hand surgeon offers to give him a hand transplant, his life gets turned upside-down because the donor hand has "strings attached" in more ways than one!