摘要:

This review of the scientific literature on isokinetic and isoinortial testing of dynamic trunk strength related to low back pain using “iso-machines” identified 108 items published in the past decade. There was inadequato scientific avidence to support the use of isomachines in preemployment screening, routine clinical assessment or medico-legal evaluation.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

This experimental evaluation of Cybex II isokinetic measurement was based on 70 normal subjects and 120 patients with chronic low back pain. It considered: reliability and learning effect; discrimination of individual patients versus normal subjects; relationship to clinical measure; assessment of effort; and a prospective 2-year follow-up of normal subjects to predict future low back pain.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

A comprehensive 4-week inpatient treatment including intensive physical training was evaluated in 194 chronic low back pain patients of whom 101 were working and 79 were on sick leave. Physical performance was assessed by measurements of spinal mobility, isometric trunk flexion and extension strength, and isokinetic lifting strength. Outcome was evaluated by a functional capacity index and work status changes reported at a 12-month follow-up. There was a 30–50% average increase in physical performance during treatment. At the 12-month follow-up the functional capacity index showed an average increase from 36.4 to 39.3 points (score range 24–48). At follow-up 28% of the sicklisted patients had returned to work and of those employed before treatment 14% were on sick leave. Associations between outcome and the improvement in physical measurements and their level at discharge were determined by stepwise multiple and logistic regression analysis. Among the physical measurements only increase in spinal mobility was associated with functional capacity index in women and return to work in both men and women at the 12-month follow-up. the overall results showed that intensive physical training and improved physical performance did not play crucial roles in the rehabilitation of chronic low back pain patients, at least when return to work was used as the outcome criterion.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

This study aimed to evaluate the lumbar intervertebral discs and the maximum isometric strength and size of the trunk muscles of middle-aged healthy volunteers (60 persons) and low back pain patients (48 persons). Disc degeneration was more frequently seen in the patients than in the healthy volunteers. The psoas and back muscles (erector spinae and multifidus) of the patients were smaller than those of the volunteers. Patients had also more fat deposits in the back muscles than controls. The maximum isometric strength of trunk muscles of the patients was on averge weaker than that of the volunteers. However, the size of the back muscles was not related to the maximum isometric extension strength of the trunk.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

Twenty patients with a radicular syndrome, who underwent surgery for unilevel lumbosacral disc herniations verified by computed tomography were Investigated with neurophysiologic tests (electromyograms, F-responses, dermatome somatosensory evoked potentialsl preopertively and 1 year postoperatively. At least one test revealed a pathologic abnormality preoperatively in 13 patients, but in 5 patients only the nerve root level corresponded to computed tomographic findings.Discordance between neurophysiologic and radiologic findings did not predict a surgical success rate. If all neurophysiologic tests were normal the outcome was significantly worse than if any of the tests showed an abnormality (P < 0.01). Four patients who were improved after surgery still had abnormal neurophysiologic findings. In conclusion, neurophysiology is not useful to diagnose the exact level of a nerve root lesion, but may reveal whether it is present. Electrodiagnosis is recommended if radiology and clinical testing conflict. If positive, it may then serve to justify surgical exploration.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

Fifty patients with single-level disc hemiations verified by computed tomography, took part in a study where they were randomized to either microsurgery or standard surgery. The aim of the study was to describe the changes on a series of radiographic examiniations after disc resection, and to relate these changes to clinical symptoms. The study was prospective and the patients were examined with contrast-enhanced computed tomography during the first postoperative week, after 1–2 months, and after 1 year.At 1 year after surgery 16 patients showed posterior disc protrusion, 47 showed scar tissue, and 13 showed nerve root displacement. Microsurgically operated patients did not show less scar tissue. None of the postoperative radiographic changes had any definite correlation to remaining back pain or leg pain.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

The immediate preoperative body mass index and standing body height of 1128 patients who underwent surgery for lumbar intervertebral disc herniation were compared in a cross-sectional study with the corresponding values obtained from a general population sample. The material was divided into sex-and age-specific subgroups. To delineate possible differences, the 99% confidence intervals for the anthropometric mean values were constructed istead of hypothesis testing. With the exception of the oldest age group, from 50 to 59 years, the patients who underwent surgery for a disc herniation were more obese and taller than the population on average in all other sex- and age-specific subgroups. The major contrast emerged in women aged 20–29 years, in whom the 99% confidence interval for the mean body mass index of the patients undergoing surgery on was 25.1–27.3 kg/m2versus 22.3–23.1 kg/m2in the general population. In patients aged 20–39 years the mean body mass index was increased also when the body height of the patients was less than the mean value of the general population samples. Both an increased body mass index and a tall stature seem to have a clear association with those severe lumbar intervertebral disc herniations that require operative treatment.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

Outcomes of primary care back pain patients (N = 1128) were studied at 1 year after seeking care. Changes in depression depending on outcome, and predictors of poor outcome were evaluated. Less than one back pain patient in five reported recent onset (first onset within the previous 6 months). One year after seeking care, the large majority of both recent and nonrecent-onset patients reported having back pain in the previous month (69% vs. 82%). A significant minority of both recent and nonrecent-onset patients had either a poor functional outcome (14% vs. 21%) or continuing high intensity pain without appreciable disability (10% vs. 16%). Predictors of poor outcome included pain-related disability, days in pain, lower educational attainment, and female gender. Among initially dysfunctional patients with persistent pain, one half were improved and one third had a good outcome at the 1-year follow-up. Among initially dysfunctional patients who experienced a good outcome, elevated depressive symptoms Improved to normal levels at follow-up. The outcome of back pain was predicted by pain-related disability and days in pain rather than by recency of onset, so it may be more meaningful to distinguish characteristic levels of pain intensity, pain-related disability, and pain persistence than to classify patients as acute or chronic.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

Blue-collar and white-collar employees in the metal industry were studied for leisure time physical activity, smoking, the body mass index, stress symptoms, and low back disorders by questionnaire, interview, and clinical examination. Measurements were made three times at 5-years intervals. The initial sample of 902 was stratified for age group, sex, and occupational class. Six hundred seven subjects took part in both.re-examinations. based on the quality, strenuousness, duration, and frequency of leisure time physical activity three scores were constructed: total activity outside work, exercise, and strenuous (500 kcal/h) activity. Low back morbidity was measured as the abundance of symptoms during the past year and clinical findings as assessed by a physiotherapist. No associations between physical activity and back disorders were observed at baseline. In men, the mean exercise activity during the first 5-year follow-up was moderately inversaly associated with the back symptoms and findings at the end of the follow-up, when the relevant morbidity score at the second examination, age, and occupational class were allowed for in multiple regression analysis. The effects persisted when data on smoking, thebody mass index, and stress symptoms were added into the models. Stranuous activity predicted the change only in the clinical findings, and the association was reduced when the other lifestyle factors were accounted for.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID

摘要:

This study analyzed posture, spinal sagittal mobility and subjective back problems in former female elite gymanasts in comparison with matched control subjects. The former gymnasts had less thoracic kyphosis than the control subjects. No difference in thoracic range of motion was found. In the lumbar spine there was no difference as to either posture or sagittal motion. The former gymnasts did not report a higher frequency of current back problems. In the former gymnasts 27% had subjective back problems. In the control subjects the corresponding value was 38%. We did not find any correlation between posture or range of motion and subjective rating of back problems in either of the groups.In conclusion, former female elite gymnasts did not have more back problems than an age matched control group.

ISSN:0362-2436    

出版商:OVID    

年代:1993

数据来源: OVID