Tom G. Mayer

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STUDY DESIGN The Pain Disability Questionnaire (PDQ) is a psychometric evaluation study of a new measure of functional status. OBJECTIVE To evaluate the psychometric properties of the PDQ and compare its validity and responsiveness to traditional measures of functional status, such as the Oswestry, Million (MVAS), and SF-36 instruments. SUMMARY OF(More)
STUDY DESIGN An inception cohort design was used in which 421 patients were evaluated systematically with a standard battery of psychosocial assessment tests (Structured Interview for DSM-III-R Diagnosis, Minnesota Multiphasic Personality Inventory, and Million Visual Pain Analog Scale) within 6 weeks of acute back pain onset. OBJECTIVES The present study(More)
Dynamic tests of trunk strength and lifting capacity have become more popular in recent years, offering certain advantages over static isometric tests in measuring patient progress in functional restoration programs for spinal disorders. However, equipment for performing such tests is expensive to buy, complex to run, and requires technical expertise and(More)
The present study compared the computed tomography (CT) scan muscle area/muscle density and isokinetic trunk strength of a group of spinal surgery patients (35 males and 11 females) 3 months postoperatively. Analyses showed trunk strength means to be below 50% of gender-specific "normal" values obtained by evaluating a normative sample. Extensor strength(More)
Two hundred chronic low-back pain patients entering a functional restoration program were assessed for current and lifetime psychiatric syndromes using a structured psychiatric interview to make DSM-III-R diagnoses. Results showed that, even when the somewhat controversial category of somatoform pain disorder was excluded, 77% of patients met lifetime(More)
STUDY DESIGN A prevalence study. OBJECTIVES To assess the prevalence of psychiatric disorders among a large group of patients with chronic disabling occupational spinal disorders (CDOSDs), using a reliable and valid diagnostic instrument. SUMMARY OF BACKGROUND DATA Although unrecognized and untreated psychiatric disorders have been found to interfere(More)
Quantitative measures of physical function (range of motion, strength, stability) are critical to musculoskeletal care of the extremities, yet such objective measures in the spine are currently unavailable. In this paper, the authors present a simple, single inclinometer modification of the method of Loebl, which offers the opportunity to separate the(More)
STUDY DESIGN This cohort study examined a sample (n = 152) of subjects tested for isokinetic lumbar strength and endurance, using novel endurance measures. OBJECTIVES To validate a new lumbar sagittal isokinetic endurance testing protocol comparing reliability in a normal subject cohort with strength test reliability to include presentation of a(More)
One hundred sixteen consecutive patients entered a functional restoration treatment program for chronic low back pain and were compared with 72 patients not treated. A two-year follow-up survey reached more than 85% of both groups; its findings were compared with earlier results of a five-month and one-year follow-up. Analysis demonstrated that 87% of the(More)
Objective: The Pain Disability Questionnaire (PDQ) is a new functional assessment instrument designed for evaluating chronic disabling musculoskeletal disorders. It is useful for assessing function/disability as affected by pain. This is the first study to assess the predictive validity of the PDQ in its relationship to 1-year post-treatment work- and(More)