Development and Validation of a Pain Behavior Assessment in Patients with Chronic Low Back Pain.

Purpose: High levels of pain behavior adversely affect the success of multidisciplinary rehabilitation of patients with chronic nonspecific low back pain (CNSLBP). Functional capacity evaluation (FCE) assessment should detect high levels of pain behavior to prevent the inclusion of unsuitable patients to functional rehabilitation programs. The aim of this study was to develop a Pain Behavior Assessment (PBA) and to evaluate its construct validity.

Functional Capacity Evaluation: Performance of Patients with Chronic Non-specific Low Back Pain Without Waddell Signs.

Purpose: The primary objective of this study is to evaluate the effect of Waddell signs (WS) on Functional Capacity Evaluation (FCE) in patients with chronic non-specific low back pain (CNSLBP) undergoing fitness for work evaluation. If an effect is observed, the secondary objective is to report performance of patients without WS in a standardized 1 day FCE protocol.

Methods: Survey of patients with CNSLBP as their primary complaint, referred for fitness for work evaluation, age between 20 and 60 years.

What is the role of "nonorganic somatic components" in functional capacity evaluations in patients with chronic nonspecific low back pain undergoing fitness for work evaluation?

Study Design: Analytical cross-sectional study.

Objective: To assess the association of "nonorganic somatic components" together with physical and other psychosocial factors on functional capacity evaluation (FCE) in patients with chronic nonspecific low back pain (NSLBP) undergoing fitness-for-work evaluation.

Summary Of Background Data: Functional capacity evaluation is increasingly used for physical fitness-for-work evaluation in patients with chronic NSLBP, but results seem to be influenced by physical as well as psychosocial factors.