在部分骨干不连续性中恢复高频中耳功能:基础科学和临床相关性
Keelin Fallon1,2, Yoshiaki Inuzuka3,4,5, Jeffrey T Cheng4,5
1Department of Otolaryngology-Head and Neck Surgery, UMASS Memorial Medical Center, Worcester.
概括
用骨水泥修复部分骨断裂可以恢复骨的速度,并改善高频听力损失. 这种手术方法为传导性听力障碍提供了解决方案.
科学领域:
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
- 生物医学工程 生物医学工程
- 听觉生理学 听觉生理学
背景情况:
- 人类骨的部分骨质断裂损害了高频 (HF) 节点的速度.
- 这种情况在临床上呈现为高频导电性听力损失 (HFCHL).
- 恢复骨关节连续性的对HF听力的影响仍然未得到充分研究.
研究的目的:
- 为了研究部分骨不连续性的机械效应,在尸体骨的形速度.
- 为了评估骨水泥修复在恢复杆速度和听力学值方面的有效性.
- 评估骨质水泥用于修复部分骨断续和改善HF听力的临床适用性.
主要方法:
- 利用六个人类骨来测量用双激光多普勒振动计测量骨和骨速度.
- 量化了由于诱导部分骨断续和随后的骨水泥修复而导致的速度变化.
- 相关联的机械发现与来自两个患者的听力学数据进行了内镜骨质水泥修复部分骨质不连续性.
主要成果:
- 部分不连续性降低了20dB (2-14kHz) 的节拍速度,并增加了低于1kHz的波速度.
- 骨水泥修复成功地恢复了两种节点和umbo速度到跨频率的基线水平.
- 在修复后,患者在4kHz时显著关闭了空气骨隙,并在6-8kHz之间改善了空气导电值.
结论:
- 骨水泥有效地恢复中耳声传输在骨与部分骨不连续性.
- 使用骨水泥进行手术修复可以改善患者的高频空气导电值.
- 表明一些高频听力损失是导电性的,可以通过手术纠正.
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