Fifty-three patients with rheumatoid arthritis were interviewed by questionnaire. All the patients had undergone total hip replacement and were married at the time of operation. They were asked if they had had sexual difficulties because of hip pain or stiffness and if the hip operation had in any way alleviated these problems. Forty-four of the 53 patients answered the questionnaire. Twenty-eight patients had had sexual problems which they attributed to hip symptoms. Following total hip replacement the hips of 27 patients were no longer considered to be the cause of sexual difficulties, but in 10 of those patients other problems still rendered sexual life difficult.