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人工肩関節置換術で上腕骨コンポーネント(以下,stemと略す)の設置不良に伴う,大結節高位が術後可動域(以下,ROM)制限を生じたと考えられる関節リウマチの1症例を経験し,再手術で大結節の短縮骨切り術を行い良好な成績を得たので報告する.症例は34歳の女性で,関節リウマチによる右肩痛とROM制限に対して人工肩関節置換術を施行した.しかしstem設置が低位となったため,相対的に大結節部が骨頭直上に比し7mm高位となった.それに伴う著しい上肢挙上制限を認めた.本症例に対し,大結節短縮骨切り術を行い10mm引き下げることによってROMの著明な改善を認めた.
We report the case of a 34-year-old woman who was diagnosed with rheumatoid arthritis in 2004 and in December 2006 complained of a gradual increase in pain and decreased range of motion (ROM) of her right shoulder. Total shoulder arthroplasty was performed. A humeral head prosthesis was placed 7mm below the greater tuberosity of the humerus, which resulted in malposition and extreme ROM limitation of her shoulder joint in comparison with her preoperative ROM. Osteotomy was performed, and the greater tuberosity of the humerus was shortened by 10mm, resulting in improved ROM.
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