Choosing appropriate angled pedical screws according to preperative measurements, RF can always create sagittal physiologic curvature which is planned tocreate preoperatively.
Choosing appropriate angled pedical screws according to preperative measurements, RF can always create sagittal physiologic curvature which is planned tocreate preoperatively.
只要根据手术前的计划及测量，选择适当角度的椎弓根钢钉就可创造出所需要的生理曲线。