When performed properly , the application of distractive forces to a posterior construct may indirectly reduce retropulsed fragments through ligamentotaxis and effectively improve the degree of spinal canal occlusion .
恰当应用撑开力和韧带整复间接复位后突骨折片可以有效改善椎管狭窄程度。
Sao itches the nature : its characteristic is the long-enduring pruritus , depends upon the distractive also inextricability , when is peaceful down , the pruritus will intensify , forms sends the aggravating , the long-enduring pruritus condition following .