当保护上半规管的部分骨头缺失时，SCDS就会发生。
SCDS can occur when some part of the bone protecting the superior semicircular canal is missing.
上半规管裂综合征(SCDS)是由覆盖内耳的某部分骨头上出现漏洞而引起。
Yet superior canal dehiscence syndrome (SCDS) is a very real affliction caused by a small hole in the bone covering part of the inner ear.
我们的假设是大概1% ~ 2%的人头部无法形成覆盖上半规管的正常厚度骨头。
Our hypothesis is that about 1 or 2 percent of the population fails to develop a normal thickness of bone overlying the superior canal.
基本上，McLeish左耳骨头的缺失部分让上半规管对声音和压力做出了异常反应。
Essentially, the missing piece of bone in McLeish's left ear was allowing the superior semicircular canal to respond to sound and pressure in abnormal ways.
本月早前，在将覆盖着上半规管的引脚大小的骨头缺口填补的手术成功之后，他重新回到了工作岗位。
He returned to work earlier this month after successful surgery to plug a pin-size hole in the bone covering the semicircular superior canal in one of his ears.
如果你有正常厚度——大概0.6 ~ 0.7毫米——的骨头覆盖上半规管，那就很难发生病变了。
If you have a normal thickness of bone, which is about 0.6 or 0.7 millimeter covering the superior canal, that's very unlikely to ever erode.
SCDS是一项由于本该覆盖内耳中负责上下平衡的半规管(即上半规管)的骨头出现漏洞引起的一种紊乱。
Superior canal dehiscence syndrome is a disorder caused by an opening in the bone that should cover the inner ear's top balance canal (called the superior semicircular canal).
一种称为“上半规管裂综合征”（下文称SCDS）的内耳道疾病会放大身体每处地方活动的声音，即便是眼球滚动的声音。
A disorder of the inner ear called superior canal dehiscence syndrome causes every sound within the body to be amplified, even the movement of one's eyeballs, all the time.
方法：采用福尔马林固定的头颅标本24具（48侧），首先寻找弓状隆起并磨出上半规管蓝线，进一步测量其与内耳道及相关结构的位置关系。
Methods: The blue line of superior semicircular canal went through the mill and correlative structures were measured on 24 cases of wet cranial bone specimens(48 sides) .
方法：采用福尔马林固定的头颅标本24具（48侧），首先寻找弓状隆起并磨出上半规管蓝线，进一步测量其与内耳道及相关结构的位置关系。
Methods: The blue line of superior semicircular canal went through the mill and correlative structures were measured on 24 cases of wet cranial bone specimens(48 sides) .
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