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Table 2 ROM values of the four FEMs at all motion segments

From: Application of an interspinous process device after minimally invasive lumbar decompression could lead to stress redistribution at the pars interarticularis: a finite element analysis

Motion

Model

L1-L2 (Degree)

L2-L3 (Degree)

L3-L4 (Degree)

L4-L5 (Degree)

Flexion

INT

3.49 (100%)

3.72 (100%)

3.72 (100%)

4.65 (100%)

DEF

3.49 (100%)

3.68 (99%)

4.47 (120%)

4.60 (99%)

DIAMUNI

3.49 (100%)

3.69 (99%)

4.11 (110%)

4.59 (99%)

DIAMBIL

3.49 (100%)

3.69 (99%)

4.11 (110%)

4.59 (99%)

Extension

INT

2.01 (100%)

1.93 (100%)

2.06 (100%)

3.05 (100%)

DEF

1.94 (97%)

1.88 (97%)

2.54 (123%)

3.02 (99%)

DIAMUNI

2.06 (102%)

1.97 (102%)

2.25 (109%)

3.09 (101%)

DIAMBIL

2.10 (104%)

2.03 (105%)

2.40 (117%)

3.15 (103%)

Lateral Bending

INT

1.24 (100%)

1.39 (100%)

1.59 (100%)

2.04 (100%)

DEF

1.32 (106%)

1.49 (107%)

1.98 (125%)

2.15 (105%)

DIAMUNI

1.25 (101%)

1.40 (101%)

1.86 (117%)

2.04 (100%)

DIAMBIL

1.23 (99%)

1.37 (99%)

1.84 (116%)

2.02 (99%)

Torsion

INT

1.71 (100%)

1.93 (100%)

2.22 (100%)

2.70 (100%)

DEF

1.53 (89%)

1.78 (92%)

2.35 (106%)

2.50 (93%)

DIAMUNI

1.62 (95%)

1.86 (96%)

2.41 (109%)

2.61 (97%)

DIAMBIL

1.62 (95%)

1.86 (96%)

2.41 (109%)

2.60 (96%)

  1. The percentages indicate the ROM values of all the models normalized by the corresponding ROM values of the INT model