Introduction:

The detection of the simulation is based on different information sources (physical examination, medical tests, psychiatric evaluation, biomechanical tests). To major inconsistencies more possibilities of overvaluation.

Objective:

To demonstrate that inconsistent results in Biomechanical tests (Ned-Lumbar) and Personality tests (SIMS, PAI, MMPI-2, MCMI-III) correspond to a characteristic personality profile (somatization, histrionic, hypochondriac).

Material and Method:

SUBJECTS: 70 patients with chronic back pain valued by MAZ. METHOD: To determinate the reliability in Biomechanical Assessment (Ned Lumbal) + Structured Psychiatric Interview + Personality test (MMPI-2, MCMI-III, PAI, SIMS).

Results:

1) Patients with few reliability have a personality profile of somatization, hypochondriac or histrionic statistically significant. 2) No significant differences in patients with adaptative anxiety-depressive disorders. 3) High correlation between biomechanical and personality test.

Conclusions:

It is confirmed a mayor profile of premorbid personality (somatization, hypochondriac and histrionic) and an overvaluation in chronic back pain using biomechanical and psychiatric tests.

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