The present invention has servo motor rotating the disc and disc driving the traction steel cord to generate pull force and realize contraction motion similar to that of muscle tissue.
The incidence rate of changes of spinal signal and its degenerated severity at intervertebral disc protrusion plus spinal cord lesion stage was 100.0%.
脊髓信号的改变及其变性程度在椎间盘脱出合并脊髓损害的出现率为100.0%。
3
Herniation of a calcified disc occasionally leads to acute nerve-root or spinal cord compression.