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両側アキレス腱骨化症の1例について報告する.症例は55歳の男性で,両側先天性内反足の手術加療歴があった.歩行困難を主訴とし,両側下腿後面に骨性隆起を触知した.超音波検査および単純X線像にて両側アキレス腱実質内に骨化像を認めた.MRIではT1強調画像で高信号,T2強調画像でやや高信号を呈した.現在は保存加療にて経過観察中であるが,腱断裂や骨化部骨折の発生に注意を要する.
Ossification of the Achilles tendon is unusual. A 55-year-old man with previous surgery for congenital clubfoot reporting ambulatory difficulty was found in plain radiography and ultrasound to have ossification in the bilateral tendon body. T1-weighted MR imaging showed a high-intensity bony mass, and T2 intermediate high-intensity. Ossification of Achilles tendon without fracture or symptoms requires no treatment, but regular follow-up is advised in such patients because the tendon may rupture or the ossification may fracture.
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