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The present study describes the development of the Chronic Pain Self-Efficacy Scale (CPSS), a 22-item questionnaire designed to measure chronic pain patients' perceived self-efficacy to cope with the consequences of chronic pain. The CPSS and other measures of psychosocial functioning were administered to 141 consecutive patients who were referred to an(More)
Eighteen Functional Spinal Units (FSU), representing three levels of human lumbar and lumbosacral spine, were tested using preload forces that corresponded to the clinical situation of a person lying supine or standing while subjected to maximum physiologic flexion or extension forces. Sagittal plane displacements were measured using linear variable(More)
In multiple studies cultural affiliation has been found to have an important influence on perception of and response to experimental and acute pain. Despite that evidence little work has been directed to understanding the cultural dimensions of the chronic pain experience. We present the results of a quantitative study of reported chronic pain perception in(More)
Mechanical testing of the spine can be carried out in either a load-controlled or a displacement-controlled manner. Each method requires certain assumptions and offers different advantages. Dr. W. Thomas Edwards believes that displacement-controlled testing most accurately reflects the in vivo environment, while Drs. Vijay Goel, David Wilder, and Malcolm(More)
STUDY DESIGN The thickness and structure of the vertebral body cortex were examined from sections of human cadaveric vertebrae. OBJECTIVES The objectives were to identify the principal structural features of the cortex, to directly measure the minimum and maximum thicknesses of the cortex in the thoracolumbar spine, and to compare regional variations in(More)
The load-displacement response and strength of the mid (C2-C5) and lower (C5-T1) cervical regions were determined for combinations of sagittal loads, in vitro. In unpaired t-test comparisons, the mid cervical region was significantly stiffer in compression and extension than the lower region. In tests to failure, failure in six out of seven mid cervical(More)
STUDY DESIGN A lateral radiographic analysis of the cervical spine was performed on 20 asymptomatic volunteers. OBJECTIVES To quantify the contribution of each cervical segment to each of four sagittal cervical end-range positions: full-length flexion, full-length extension, protrusion, and retraction. SUMMARY OF BACKGROUND DATA Recent clinical research(More)
The objective of this study was to assess the effectiveness of a previously described technique of regional analgesia (continuous infusion of local anesthetic through a catheter placed at the time of amputation within the exposed sciatic or posterior tibial nerve) on relieving the postoperative pain in a heterogeneous group of patients who underwent lower(More)
Although the Spanish version of the WAIS (Escala de Inteligencia Wechsler para Adultos, EIWA) is widely used as a measure of intelligence in Spanish-speaking populations, little is known about the psychometric characteristics of the test beyond the information given in the test manual. Despite this, users have assumed that the test functions clinically and(More)