中性区域 meaning in English

neutral region

The neutral zone is the initial portion of the total range of motion of a spinal motion segment during which spinal motion is produced against minimal internal resistance
摘要在整个脊柱运动范围中存在着一个中性区域，在这个区域内，脊柱活动时受到的阻力较小。
Lumbar segmental instability is defined as a decrease in the capacity of the stabilizing system of the spine of maintaining the spinal neutral zone within physiological limits , so that there are neurological deficit , majo deformity and incapacitating pain
腰椎节段性失稳的定义是在生理载荷下，脊柱的稳定系统将脊柱运动的中性区域维持在生理范围内的能力减退，从而出现脊柱的畸形、神经症状和不能忍受的疼痛。