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Table 5 Pressure of L4-L5 annulus and nucleus (MPa)

From: Topping-off technique prevents aggravation of degeneration of adjacent segment fusion revealed by retrospective and finite element biomechanical analysis

 

Annulus pressure

Nucleus pressure

PLIF

Topping-off

PLIF

Topping-off

Flexion

0.8034 ± 0.0263

0.5823 ± 0.0945*

0.1753 ± 0.0475

0.0949 ± 0.0429*

Extension

0.2112 ± 0.0135

0.1882 ± 0.0040*

0.5654 ± 0.0328

0.4993 ± 0.0177*

(Left) flexion

0.4819 ± 0.4431

0.4302 ± 0.0439

0.5686 ± 0.0095

0.5787 ± 0.0115

(Right) rotation

0.4819 ± 0.4431

0.4491 ± 0.0173

0.1359 ± 0.0167

0.1446 ± 0.0317

  1. *P < 0.05.