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.
A roentgen stereophotogrammetric analysis of hip prostheses was made in four patients with rheumatoid arthritis during a postoperative period of 2 years. Implanted tantalum balls, prosthetic femoral head, and ends of the wire in the acetabular socket were used as measurement points. The migration of the prosthetic head and the acetabular socket in relation to the pelvic bone was determined. The difference between the cranial migration of the head and the socket is a measure of the postoperative instability of the hip joint and deformation of the prosthetic components. This deformation occurs in the plastic acetabular socket and is mainly due to wear. The roentgen stereophotogrammetric method can be applied to standard hip orostheses with a metal femoral head and a plastic or metal acetabular socket to study migration or loosening of the prosthesis in relation to the supporting bone, prosthesis instability, and deformation of the prosthetic components.
Eighteen total hip replacements were performed in 10 patients with ankylosing spondylitis. The mean observation time was 3.8 years. Seven hips had been operated on before total hip replacement (THR); 6 Were ankylotic before THR. The results as regards pain relief and increased walking distance were good. All hips improved in mobility after THR and this improvement was maintained during the observation time. Six of the 10 patients went back to full-time work. The differences between patients with ankylosing spondylitis and rheumatoid arthritis, as regards indications for and rehabilitation after THR, are discussed.
This is the first report of septic arthritis of the knee caused by Chryseobacterium meningosepticum. The infection was associated with a penetrating injury to the joint. The patient was cured by flushing of the joint and antibiotic treatment.
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