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Table 5 Maximum pars stresses at instrumented levels (left side)

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 L3 (MPa) L4 (MPa)
Flexion INT 3.39 (100%) 2.60 (100%)
DEF 5.34 (158%) 1.13 (43%)
DIAMUNI 5.08 (150%) 2.24 (86%)
DIAMBIL 5.26 (155%) 2.23 (86%)
Extension INT 6.52 (100%) 8.17 (100%)
DEF 4.86 (75%) 16.60 (203%)
DIAMUNI 6.19 (95%) 12.10 (148%)
DIAMBIL 6.14 (94%) 13.10 (160%)
Lateral Bending INT 0.50 (100%) 1.26 (100%)
DEF 0.36 (72%) 1.22 (97%)
DIAMUNI 0.63 (126%) 0.89 (71%)
DIAMBIL 0.60 (120%) 0.89 (71%)
Torsion INT 10.90 (100%) 9.97 (100%)
DEF 8.94 (82%) 12.20 (122%)
DIAMUNI 9.64 (88%) 13.60 (136%)
DIAMBIL 9.55 (88%) 13.60 (136%)
  1. The percentages indicate the maximum pars stresses of all the models normalized by the corresponding maximum pars stresses of the INT model