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Table 11 Maximum von Mises equivalent stress (Mpa) of L3/L4 intervertebral disc

From: Topping-off surgery vs posterior lumbar interbody fusion for degenerative lumbar disease: a finite element analysis

 

Upright

Anteflexion

Rear protraction

Right lateral bending

Left lateral bending

Left axial rotation

Right axial rotation

Normal

1.2671

1.8162

2.943

3.1062

2.6322

1.7933

2.1069

Coflex

1.362

1.8402

2.8164

3.1853

2.9517

1.8602

2.3635

K-ROD

1.2593

1.8474

2.8363

3.1221

2.6487

1.8277

1.994

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X