Articles: low-back-pain.
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A prospective observational study of patients with low back pain and those without was performed. ⋯ The presence of a high-intensity zone does not reliably indicate the presence of symptomatic internal disc disruption. Although higher in symptomatic patients, the prevalence of a high-intensity zone in asymptomatic individuals with degenerative disc disease (25%) is too high for meaningful clinical use. When injected during discography, the same percentage of asymptomatic and symptomatic discs with a high-intensity zone were shown to be painful.
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A number of case reports and nonplacebo controlled studies have documented the efficacy of clonazepam (Klonopin) in the treatment of a number of chronic pain syndromes including lancinating and neuropathic/deafferentation pain. There are, however, no data on the efficacy of clonazepam for chronic pain (CP) associated with myofascial pain syndrome (MFPS). Therefore, we wish to report the results of an open clinical treatment trial of clonazepam for CP associated with MFPS. ⋯ Clonazepam may have an antinociceptive effect for pain associated with myofascial pain syndrome.
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In this study three instruments measuring disability of patients with low-back pain are presented and evaluated: (1) the Behinderungsfragebogen (RM) - a German version of the Roland & Morris disability questionnaire (RDQ) (2) a numerical rating scale measuring disability in general and (2) eight numerical rating scales measuring specific dimensions of disability (standing, sitting, walking, driving a car, carrying light loads, carrying heavy loads, sleeping, and sexual intercourse). ⋯ The RM is an instrument measuring patients' perception of their disability that offers simple, fast practicability for patients and tester. The 2 rating scales: The 8 numerical rating scales measuring specific dimensions of disability (QL3) offer all the advantages of the numerical rating scale measuring disability in general (QL1) (simple instruction, high plausibility for the patients, and simple, fast practicability), but they provide more information about the patient's disability, which allows comparisons of disability at different times in the therapeutic process. Numerical rating scales are not suitable for patients with poor ability to abstract. For these patients it is necessary to use a questionnaire which asks concretely about what the patient can or cannot do (e. g. RM). Because of its better psychometric properties, the QL3 should be favored over the RM.
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Randomized Controlled Trial Clinical Trial
Provocative discography in patients after limited lumbar discectomy: A controlled, randomized study of pain response in symptomatic and asymptomatic subjects.
This was a prospective observational study of patients with low back pain and those without after laminotomy and discectomy. ⋯ A high percentage of asymptomatic patients with normal psychometric testing who previously have undergone lumbar discectomy will have significant pain on injection of their discs that had previous surgery (40%). This is not significantly different from the experience of symptomatic patients with normal psychometric testing undergoing discography on discs that had previous surgery. Patients with abnormal psychological profiles have significantly higher rates of positive disc injections than either asymptomatic volunteers or symptomatic subjects with normal psychological screening.
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A prospective cohort study with identical questionnaires and inclusion criteria was performed. ⋯ Almost none of the commonly occurring and frequently practiced medical interventions for patients who are sick-listed because of low back pain had any positive effects on either the recorded health measures or work resumption.