Polyurethane versus silicone for endoprosthetic replacement of the metacarpophalangeal joints in rheumatoid arthritis
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In a prospective study 12 patients with rheumatoid arthritis underwent arthroplasty of four metacarpophalangeal joints. Two different implant materials were randomly used in each hand, polyurethane (Pellethane) or silicone (Silastic). Eleven patients with 44 (... ...
