Table 3 Mesh convergence test.

From: Oblique lateral interbody fusion with internal fixations in the treatment for cross-segment degenerative lumbar spine disease (L2-3 and L4-5) finite element analysis

 

Mesh 1.5

Mesh 2

Mesh 2.5

Mesh 3

Node number

1,903,844

1,082,515

789,216

644,458

Element number

1,310,968

730,659

525,161

425,407

Cortical bone max stress (Mpa)

11.258

10.868

12.038

8.7518

Rate of change compared with mesh 0.5 mm

 

3.46%

6.92%

22.26%

Endplate max stress (Mpa)

14.685

14.371

13.292

13.207

Rate of change compared with mesh 0.5 mm

 

2.14%

9.49%

10.06%

Nucleus max stress (Mpa)

0.17341

0.17217

0.17779

0.15358

Rate of change compared with mesh 0.5 mm

 

0.71%

0.43%

11.43%

Fiber max stress (Mpa)

0.82743

0.827939

0.78812

0.77454

Rate of change compared with mesh 0.5 mm

 

0.06%

4.75%

6.39%

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