屈筋腱および背側手根間複合体の伸長、3つの靭帯腱移行術後
Daniel Bakker1,2, Steven Merkens1, Niek Parser2
1Reinier de Graaf Groep, Delft, The Netherlands.
まとめ
3つの靭帯腱移行術(3LT)処置後、背側手根間複合体(DIC)が最も伸長した。縫合糸の緩みを防ぐため、早期の自動運動プロトコルでは手関節の屈曲を30°に制限する必要がある。
科学分野:
- 整形外科学
- 生体力学
- 靭帯再建
背景:
- 3つの靭帯腱移行術(3LT)の生体力学的特性を理解することは、外科的転帰および術後リハビリテーションを改善するために不可欠である。
- 3LT処置は、手関節再建に使用される外科的技法である。
研究 の 目的:
- 3つの靭帯腱移行術(3LT)の生体力学的特性を調査すること。
- 手関節屈曲に関連する腱伸長および破壊モードを分析すること。
主な方法:
- 10個の解剖学的手関節標本を使用した。
- 各標本で3LT後の伸長および破壊タイプを評価するために5回のテストを実施した。
主要な成果:
- 背側手根間複合体(DIC)で有意な伸長が観察された(屈曲80°で3.75 ± 0.91 mm)。相対伸長率は33.4%に達した。
- 屈筋橈側手根腱(FCR)スリップの伸長は、それほど顕著ではなかった(屈曲80°で0.96 ± 0.38 mm、相対伸長率4.1%)。
- 30°屈曲後のテストの4%でDIC近位部の縫合糸緩みが発生したが、靭帯断裂や引き抜きは観察されなかった。
結論:
- 背側手根間複合体(DIC)は、3LT後の伸長の主な部位である。
- 本研究結果は、DICの縫合糸緩みに関連するリスクを軽減するため、早期自動運動プロトコルにおいて初期の手関節屈曲を30°に制限することを示唆している。
- この推奨は、患者の回復を強化し、3LT手術後の合併症を防ぐことを目的としている。
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