Spine
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A 5-year prospective cohort study was conducted of men and women seeking care for a new period of low back pain (LBP). ⋯ Over a 5-year period, both men and women who had sought care for LBP reported a decrease in pain and disability; however, only a few were fully restored. In this study, we found no effect of nonspecific physical exercise on recovery from LBP in men and women.
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Comparative Study
Mathematical calculation of pedicle subtraction osteotomy size to allow precision correction of fixed sagittal deformity.
This is a retrospective review of 15 consecutive fixed sagittal plane deformity patients who have undergone pedicle subtraction osteotomies. The focus of this article is the application of a trigonometric equation that calculates the degree of correction needed to achieve sagittal balance. The intraoperative predictive accuracy and clinical radiographic results of using this mathematical equation are discussed. ⋯ By using a simple mathematical equation, one can reliably determine the degree of pedicle subtraction osteotomy needed for correction of sagittal deformity. This technique is reproducible and has led to successful clinical outcomes.
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Randomized Controlled Trial Comparative Study
Circumferential fusion improves outcome in comparison with instrumented posterolateral fusion: long-term results of a randomized clinical trial.
Prospective randomized clinical study with a 5- to 9-year follow-up period. ⋯ Circumferential lumbar fusion demands more extensive operative resources compared with posterolateral lumbar fusion. However, 5 to 9 years after surgery, the circumferentially fused patients had a significantly improved outcome compared with those treated by means of posterolateral fusion. These new results not only emphasize the superiority of circumferential fusion in the complex pathology of the lumbar spine but are also strongly supported in all of the validated questionnaires used in the study.
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Comparative Study
MMPI disability profile: the least known, most useful screen for psychopathology in chronic occupational spinal disorders.
Prospective study on predicting psychopathology in chronic occupational spinal disorders (COSDs). ⋯ The prevalence of commonly cited MMPI profiles, often used for presurgical or chronic pain screening in this population, is relatively small. The prevalence of four or more elevations (DP), however, is large, representing two thirds of patients demonstrating any classifiable MMPI pattern. The DP group showed extremely high levels of associated psychopathology, which raises "red flags" to the surgeon likely to operate on such patients, or the interdisciplinary pain team. Screening COSD patients with the MMPI-2 may be effective in identifying psychopathology, but only if the physician is aware that the DP is commonplace and significant.
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Prospective, 5-year, cohort study of working subjects. ⋯ In this study cohort, minor trauma does not appear to increase the risk of serious LBP episodes or disability. The vast majority of incident-adverse LBP events may be predicted not by structural findings or minor trauma but by a small set of demographic and behavioral variables.