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背景:低出力超音波パルス(LIPUS)の骨癒合期間の短縮効果は多数報告されているが,上腕骨および大腿骨に対する治療において無効例の報告が散見される.これは,骨折部が皮膚表面より遠いため,超音波ビームが正確に照射されていないことが原因の1つと考えられている.
方法:今回,単純X線撮影で簡便に照射位置を調整できるターゲットデバイスを作製し,超音波を使用する方法と比較してその有用性を検討した.
結果:ターゲットデバイスにより照射位置の調整が容易で所要時間も少なく,視覚的に照射位置を確認しやすい.
まとめ:正確な照射位置・角度を要するLIPUS治療において,デバイスの使用は有用であると考えられた.
Background:There have been many reports on the shortening effect of LIPUS on the fracture union period, but there have been occasional reports of cases of ineffectiveness in regard to the treatment of humeral and femoral fractures. Some of the cases of ineffectiveness are thought to be due to the targeted fragmented bone parts being farther from the surface of the skin, and therefore not properly irradiated by the ultrasound beam.
Method:To address this problem we devised a targeting device that makes it easy to aim the irradiation at a specific location by using plain radiography, and we assessed its usefulness.
Outcome:Targeting with the device we created made it easy to adjust the irradiated position, and it required little time and made it easy to visually confirm the irradiated position for the radiograph.
Conclusion:We therefore concluded that it is useful for LIPUS therapy, which requires accuracy in terms of the irradiated position and angle.
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