Abstract
Twenty-three Swanson silicone rubber implants in patients with stage III or stage IV rheumatoid arthritis were reviewed at an average of 72 months after surgery. Minimum follow-up in patients with unrevised implants was 44 months. Results were rated good or excellent in 48%, fair in 4%, and poor in 48%. Pain was the primary indication for surgery. Patient satisfaction and pain relief were achieved in 63%. Implant fracture occurred in 52%. Revision rate was 30%, including one recommended revision. Radiographic changes consistent with particulate synovitis were seen in 30%. Prosthesis settling and bony resorption were seen in more than 75% of the patients. Survivorship analysis demonstrated 42% survival at 77 months. Progressive clinical and radiologic deterioration was seen. Swanson silicone rubber implant is recommended only in the very low demand patient with stage III or stage IV rheumatoid arthritis and in those with insufficient bone stock to allow total wrist arthroplasty with a metal-on-plastic design.
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