Episode Of Acute Low Back Pain Research Articles

Predicting the transition from acute to persistent low back pain

Most people experience low back pain (LBP) at least once in their lifetime. Only a minority of them go on to develop persistent LBP. However, the socioeconomic costs of persistent LBP significantly exceed the costs of the initial acute LBP episode. To identify factors that influence the progression of acute LBP to the persistent state at an early stage. Prospective inception cohort study of patients attending a health practitioner for their first episode of acute LBP or recurrent LBP after a pain free period of at least 6 months. Patients were assessed at baseline addressing occupational and psychological factors as well as pain, disability, quality of life and physical activity and followed up at 3, 6, 12 weeks and 6 months. Variables were combined to the three indices 'working condition', 'depression and maladaptive cognitions' and 'pain and quality of life'. The index 'depression and maladaptive cognitions' was found to be a significant baseline predictor for persistent LBP up to 6 months (OR 5.1; 95% CI: 1.04-25.1). Overall predictive accuracy of the model was 81%. In this study of patients with acute LBP in a primary care setting psychological factors at baseline correlated with a progression to persistent LBP up to 6 months. The benefit of including factors such as 'depression and maladaptive cognition' in screening tools is that these factors can be addressed in primary and secondary prevention.

Effect of Hamstring Flexibility on Hip and Lumbar Spine Joint Excursions During Forward-Reaching Tasks in Participants With and Without Low Back Pain

Johnson EN, Thomas JS. Effect of hamstring flexibility on hip and lumbar spine joint excursions during forward-reaching tasks in participants with and without low back pain. Objective To examine the correlation between hamstring flexibility and hip and lumbar spine joint excursions during standardized reaching and forward-bending tasks. Design Retrospective analysis of data obtained during 2 previous prospective studies that examined kinematics and kinetics during forward-reaching tasks in participants with and without low back pain (LBP). Setting The 2 previous studies were conducted in the Motor Control Lab at Ohio University and the Orthopaedic Ergonomics Laboratory at The Ohio State University. Participants Data from a total of 122 subjects from 2 previous studies: study 1: 86 subjects recovered from an episode of acute LBP (recovered) and study 2 (A.I. McCallum, unpublished data): 18 chronic LBP subjects and 18 healthy-matched controls (healthy). Interventions Not applicable. Main Outcome Measure Correlation values between hamstring flexibility as measured by straight leg raise (SLR) and amount of hip and lumbar spine joint excursions used during standardized reaching and forward-bending tasks. Results No significant correlation was found between hamstring flexibility and hip and lumbar joint excursions during forward-bending tasks in the LBP or recovered groups. The SLR had a significant negative correlation with lumbar spine excursions during reaching tasks to a low target in the healthy group (right SLR: P=.011, left SLR: P=.004). Conclusions Hamstring flexibility is not strongly related to the amount of lumbar flexion used to perform forward-reaching tasks in participants who have chronic LBP or who have recovered from LBP. More research needs to be conducted to examine the influence of hamstring flexibility on observed movement patterns to further evaluate the efficacy of flexibility training in the rehabilitation of patients with LBP.

Segmentale Stabilisation zur Behandlung von lumbalen Rückenschmerzen: Ein systematisches Review

Segmental Stabilizing Exercises (SSE) has a strong theoretical basis in treatment and prevention of Low Back Pain (LBP). The clinical effectiveness has not been clearly established. A systematic review of clinical- and randomized. controlled trials. To evaluate the effectiveness of SSE for acute, subacute, chronic and recurrent LBP. Electronic database PubMed was searched for reviews of SSE from November 2008 to March 2009. Keywords were low back pain, lumbar stabilization, segmental stabilizing exercises, spinal stabilization exercises. For chronic LBP, four comparisons were made: Effectiveness of SSE versus minimal intervention, effectiveness of SSE as a supplement, effectiveness of SSE versus other physiotherapy treatment and effectiveness of SSE versus surgery. 17 trials were included. For acute LBP, SSE is equally effective as treatment by general practitioner in reducing short- term pain or disability. For long-term effects after an acute episode of LBP, SSE is more effective in reducing recurrence. For chronic LBP, SSE is more effective than a minimal intervention and may be as effective as other physiotherapeutic treatments in reducing pain and disability. Equal improvement in both groups was measured for surgery. There are no results concerning subacute LBP. For LBP, SSE is more effective than a minimal intervention, but it is not more effective than other physiotherapy interventions.

Risk factors for low back pain in women

Low back pain (LBP) is a common problem, with an estimated prevalence of 31% in US populations.1 Approximately 75% to 80% of the population will experience at least one episode of acute LBP during their lifetime. Most patients who experience an episode of LBP will improve over the course of a month.

BokSmart: Preventive rehabilitation for rugby injuries to the lower back and core

Background. The low back is an integral part of the entire movement chain as it functions as part of a complex network of the skeletal, muscular and nervous system. Eighty to 90% of acute low back pain episodes dissipate within 8 - 12 weeks regardless of any intervention, but 5 - 10% regress into chronic low back pain. As a result of its undistinguished aetiology, the treatment for low back pain remains controversial. Treatment options for low back pain include the following: analgesics, muscle relaxants, antidepressants, nonsteroidal anti-inflammatory drugs, epidural steroid injections, manipulation, back schools, electromyographic biofeedback, traction, orthoses, behaviour therapy, transcutaneous electrical nerve stimulation, acupuncture, and exercise therapy. Results. Therapeutic exercises for low back pain have been shown in 6 different randomised controlled trials to be beneficial in reducing pain by up to 60% and improving functional ability by up to 47%. Furthermore, a Cochrane review on low back pain found strong evidence that exercise therapy is an effective intervention in the treatment of low back pain. When prescribing exercises for an individual with low back pain the following goals need to be considered: (i) improve performance in endurance activities; (ii) improve muscular strength around the spine; (iii) eliminate any impairments in spinal flexibility; (iv) reduce the intensity of the pain being experienced by the individual; and (v) reduce back pain-related disability. A rugby player will have increased core stability/strength and a reduced risk of injury if the internal support mechanisms of the spine have been conditioned to resist distortion or injury from external forces. Not only will improved core stability benefit players on the field during matches or practices, it will also assist in preventing unnecessary injuries during weight training and pre-season conditioning. Conclusion. Exercise programmes which combine core stability with general strength training should be prescribed for rugby players to prepare them for the level of impact involved in the game, as well as for sport-related weight training and non-sport-related daily activities.

After an Episode of Acute Low Back Pain, Recurrence Is Unpredictable and Not as Common as Previously Thought

Inception cohort study. To provide the first reliable estimate of the 1-year incidence of recurrence in subjects recently recovered from acute nonspecific low back pain (LBP) and to determine factors predictive of recurrence in 1 year. Previous studies provide potentially flawed estimates of recurrence of LBP because they do not restrict the cohort to those who have recovered and are therefore eligible for a recurrence. We identified 1334 consecutive patients who presented to primary care with acute LBP; of these 353 subjects recovered before 6 weeks and entered the current study. The primary outcome measure was recurrence of LBP in the next year. Specifically, an episode of recurrence was defined in 2 ways: recall of recurrence at the 12-month follow-up and report of pain at the 3- or 12-month follow-up. Risk factors for recurrence were assessed at baseline. Pain intensity was assessed at 6 weeks, 3 months, and 12 months and recurrence at 12 months. Factors that could plausibly affect recurrence were chosen a priori and evaluated using a multivariable regression analysis. Recurrence of LBP was found to be much less common than previous estimates suggest, ranging from 24% (95% CI = 20%-28%) using "12-month recall" definition of recurrence, to 33% (95% CI = 28%-38%) using "pain at follow-up" definition of recurrence. However, only 1 factor, previous episode(s) of LBP, was consistently predictive of recurrence within the next 12 months (odds ratio = 1.8-2.0, P = 0.00-0.05). This study challenges the assumption that the majority of subjects will have a recurrence of LBP in a 1-year period. After the resolution of an episode of acute LBP, about 25% of subjects will have a recurrence in the next year. It is difficult to predict who will have a recurrence within the next year.

Adherence of Irish general practitioners to European guidelines for acute low back pain: A prospective pilot study

There are no national low back pain (LBP) clinical guidelines in Ireland, and neither the level of adherence of General Practitioners (GPs) to the European guidelines, nor the cost of LBP to the patient and the state, have been investigated. A prospective pilot study was conducted on 54 consenting patients (18M, 36F: mean age (SD): 40.5 (14.3) years) with a new episode of acute LBP (<3 months) attending one of nine participating GPs. Baseline demographic, LBP classification [i.e. simple back ache (SBA), nerve root pain (NRP), serious spinal pathology (SSP)] and primary care management data were recorded over a three month period. Adherence and costs were estimated based on: medication prescription, referral for investigations, treatment or consultations, and wage replacement costs (time signed off work). For both SBA and NRP, medication prescriptions were consistent with European guideline recommendations, but not for referral for further treatment (39% of SBA patients were referred on first visit), secondary care (54% of NRP patients were referred on first visit), or discontinuation of work (50% NRP patients on first GP visit). The average total cost (direct and wage replacement) for a single episode of LBP over 12 weeks was €20,531 (20,300–20,762). Direct costs accounted for 43% [€8874.36, (€8643.37–€9105.37)] and wage replacement costs 57% (€11,657). In conclusion, management of acute LBP in a cohort of GPs in Ireland was not consistent with European clinical guideline recommendations, and warrants higher levels of postgraduate education among GPs, as well as restructuring of primary care services, which should improve patient outcome and reduce costs.

General practitioners’ fear-avoidance beliefs influence their management of patients with low back pain

The objectives of this cross-sectional study conducted in primary care practice in France were to describe general practitioners’ (GPs) fear-avoidance beliefs about low back pain (LBP), investigate the impact of these beliefs on their following guidelines for bed rest, physical activities, and sick leave, and uncover factors associated with GPs’ fear-avoidance beliefs. A total of 864 GPs completed a 5-part self-administered questionnaire. Parts 1, 2, and 3 concerned demographic, professional data, and personal history of back pain, respectively. Part 4 dealt with GPs’ education about LBP and practice for LBP. Part 5 assessed GPs’ fear-avoidance beliefs on the Fear-Avoidance Beliefs Questionnaire (FABQ). GPs’ mean age was 48.2 ± 7.0 years, 80% were male, 88% had been practicing for more than 10 years, and 52% reported a previous personal episode of acute LBP. Forty-six percent had participated in an educational session on LBP during the last 3 years. Mean scores for the FABQ Phys and Work were 9.6 ± 4.8 and 17.5 ± 6.7, respectively. Sixteen percent of participants had high rating on the FABQ Phys (FABQ Phys score > 14). FABQ Phys score was associated with recommendation of bed rest or rest during sick leave ( p < 0.0001) for acute LBP and less advice to maintain maximum bearable physical activities ( p < 0.001) for chronic LBP. FABQ Work score was associated with prescribing sick leave during painful periods ( p < 0.005) for acute LBP and less advice to maintain maximum bearable physical activities ( p < 0.001) for chronic LBP. GPs’ fear-avoidance beliefs about LBP negatively influence their following guidelines concerning physical and occupational activities for patients with LBP.

Use of medications in the treatment of acute low back pain.

The prescription of medications continues to be one of the mainstays of treatment of acute low back pain episodes. The goals of the pharmacologic treatment for acute low back are reduction of pain and return of normal function. Often, nociception is a result of secondary inflammation and muscle spasm after acute injury of a structure of the spine, which may include muscle, tendon, ligament, disc, or bone. An understanding of the appropriate use of medications to address the underlying pain generator and the current evidence for using these medications is essential for any physician who sees and treats patients with acute low back pain.

Acute low back pain: pain-related fear and pain catastrophizing influence physical performance and perceived disability

Pain-related fear and pain catastrophizing are associated with disability and actual performance in chronic pain patients. In acute low back pain (LBP), little is known about the prediction of actual performance or perceived disability by pain-related fear and pain catastrophizing. This experimental, cross-sectional study aimed at examining whether pain-related fear and pain catastrophizing were associated with actual performance and perceived disability. Ninety six individuals with an episode of acute LBP performed a dynamic lifting task to measure actual performance. Total lifting time was used as outcome measure. The results show that pain-related fear, as measured with the Tampa Scale for Kinesiophobia, was the strongest predictor of this physical task. Using the Roland Disability Questionnaire as a measure of perceived disability, both pain-related fear and pain catastrophizing, as measured with the Pain Catastrophizing Scale, were significantly predictive of perceived disability and more strongly than pain intensity was. The results of the current study suggest that pain-related fear is an important factor influencing daily activities in individuals suffering an episode of acute LBP. The study results have important clinical implications, especially in the development of preventive strategies for chronic LBP.

Psycho-social factors and coping strategies as predictors of chronic evolution and quality of life in patients with low back pain: A prospective study

Low back pain (LBP) is a major problem of public health. Chronic pain is the most difficult to treat and the most expensive. The way patients cope with their pain may influence its outcome. Aim: To identify coping strategies of LBP patients, and their influence on LBP evolution. Methods: Ninety nine patients were assessed just after an acute LBP episode and one year later. Assessment tools included medical and social reports, scales of anxiety, depression, quality of life, locus of control (LOC), social support and coping strategies. Results: One year after the initial episode, 67% of patients have improved and 33% had a chronic pain. A principal components analysis showed that two main dimensions might be identified inside the outcome: functional and emotional non-adjustment. Functional non-adjustment was predicted by male gender, reduction of activity, and history of trauma over one year. Emotional non-adjustment was only predicted by trait-depression. Reactions to pain were structured in four factors: distraction-praying, helplessness–hopelessness, cognitive restructuration and perceived control. Two of these factors predicted adjustment one year later: distraction-praying had a direct effect on functional non-adjustment, and helplessness–hopelessness on emotional issue. Conclusions: Besides somatic factors, psychosocial predictors of LBP chronic evolution may be identified. Both aspects must be taken into account in order to prevent chronic pain. Perhaps cognitive-behavior therapy may help LBP patients to cope with pain in a better way.

Prognosis and quality of life in patients with acute low back pain: insights from a comprehensive inception cohort study.

To investigate the respective contribution of various biologic and psychosocial factors, especially initial health-related quality of life (HRQOL), in the natural history of acute low back pain (LBP) and to evaluate the impact of this condition on HRQOL. For 3 months, we assessed 113 patients consulting for nonspecific acute LBP of <72 hours duration at inclusion and treated with acetaminophen. Endpoints included pain, disability assessed by the Roland Disability Questionnaire, and HRQOL assessed by the Short Form 36 health survey (SF-36). Seventy-three percent of patients recovered within 2 weeks and 5% of patients developed chronic LBP. Prior low back surgery, higher initial disability questionnaire score, lower SF-36 score, and temporary compensation status were independently associated with delayed recovery. The impact of the acute LBP episode on HRQOL was brief and moderate, except for patients with comorbidity, psychiatric disorders, those of foreign origin, unemployed, or with job dissatisfaction. The impact of compensation status, sick leave, and bed rest was more profound and lasting. This study highlights the large contribution of work-related factors, but also initial HRQOL, to the prognosis of LBP. It also suggests that LBP impairs HRQOL mainly through compensation and inappropriate medical care, and that, in turn, impaired HRQOL favors the condition becoming chronic. These findings have implications for future research into the management of LBP.

Management of back pain

Purpose : Low back pain (LBP) constitutes one of the most difficult and costly medical problems in industrial countries, with a prevalence of 25 to 30% in an adult lifetime span and an incidence of about 5% per year. Method : Based on risk factors cited in the pertinent literature, the evaluation, diagnosis and therapeutic options for LBP are outlined. Especially the latter can be highlighted on the basis of a large number of systematic reviews. Results : Bed rest is no longer regarded as an effective treatment for episodes of acute LBP, except when the patient has evident clinical signs of nerve root compression. Exercise therapy comprises a wide range of concepts and underlying physiological principles. Different concepts are discussed. Evidence suggests no specific effects of exercise therapy in acute LBP. In chronic LBP, exercise as well as combined treatment with several modalities appear to be superior to conventional medical care. In the past decade, reconditioning of the paraspinal muscles is being given increasing importance in research. Several studies indicate the effectiveness of vigorous strengthening of paraspinal and trunk muscles on pain and even disc surgery. Different underlying pathologies seem to respond equally well to this concept. Back school concepts are not proven to have long-term effects on LBP. The literature on electrotherapy and massage in LBP is generally sparse. Nevertheless, some studies suggest the effectiveness of electrotherapy on pain reduction at least in the short term. Spinal mobilization seems to be effective in reducing pain. Conclusion : Based on these evidence-based conclusions, the patient's medical history, the investigation and the diagnosis the clinician has to devise an individual treatment plan that takes the deficiencies and requirements of the patient into account.

Deep venous thrombosis and pulmonary embolism as a complication of bed rest for low back pain

Slipman CW, Lipetz JS, Jackson HB, Vresilovic EJ. Deep venous thrombosis and pulmonary embolism as a complication of bed rest for low back pain. Arch Phys Med Rehabil 2000;81:127-129. A case of bilateral lower extremity deep venous thrombosis and pulmonary embolism as a complication of bed rest prescribed for an acute low back pain episode is presented. A 29-year-old woman with low back pain was prescribed more than 2 weeks of bed rest, during which she developed progressive bilateral lower extremity complaints that were ascribed to nerve root irritation. Her symptoms were initially treated with physical therapy and epidural steroid injections. A Doppler examination and ventilation-perfusion scan revealed extensive deep venous thromboses and mismatches consistent with pulmonary embolism. This case illustrates an unusual extraspinal source of lower extremity symptoms associated with low back pain and further supports the role of early mobilization in the treatment of back pain. © 2000 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation

The effect of manual therapy in acute low back pain (LBP)

In 14 patients with acute LBP the effect of manual therapy was examined. The examination was conducted with the Triflexometer, which is an electromechanical measuring instrument for examination of the posture and function of the spine. This instrument makes possible the measurement of the spine in resting as well as in moving positions, and it is also suitable for recording local disturbances of the movement. In our study we measured the spine from C7 to S2 in the sagittal and frontal planes. Improvement in movement was detected in all patients following manual therapy, as well as in ante-, retro- and lateral flexion on both sides, and local functional disturbances also disappeared partially or totally. Our study shows that the Triflexometer makes it possible to record the effect of manual therapy in acute LBP. The proof of the local functional disturbances after manual therapy indicates that these patients have a higher risk of new episodes of acute LBP or perhaps of chronic LBP, and because of that there it is necessary to use other treatment forms.

Labour Pain

Low-back pain is a major component of labour pain in a substantial number of women. The purpose of this study was to determine whether episodes of acute low-back pain prior to pregnancy is a predictor of low-back pain during labour. 114 women received the Short-Form McGill Pain Questionnaire (SF-MPQ) during labour and were asked to describe the pain separately for front and back contraction pain or continuous pain. The day after the birth of the child the women were interviewed to determine whether they had (a) a history of episodes of acute low-back pain before pregnancy, (b) low-back pain during pregnancy, and (c) low-back pain during menstruation. The results show that episodic low-back pain before pregnancy is not correlated with any aspect of labour pain. However, it is significantly correlated with episodes of low-back pain during pregnancy. In contrast, low-back pain during menstruation is significantly correlated with labour pain scores recorded for back and front contraction pain as well as for continuous back pain. The significant correlation of labour pain with back pain during menstruation suggests that both share a common underlying mechanism. Similarly, the correlation of low-back pain during pregnancy with episodes of acute low-back pain before pregnancy suggests that the strain on back muscles during pregnancy may activate the mechanisms that underlie the usual forms of low-back pain.

Labour pain: correlations with menstrual pain and acute low-back pain before and during pregnancy

Low-back pain is a major component of labour pain in a substantial number of women. The purpose of this study was to determine whether episodes of acute low-back pain prior to pregnancy is a predictor of low-back pain during labour. 114 women received the Short-Form McGill Pain Questionnaire (SF-MPQ) during labour and were asked to describe the pain separately for front and back contraction pain or continuous pain. The day after the birth of the child the women were interviewed to determine whether they had (a) a history of episodes of acute low-back pain before pregnancy, (b) low-back pain during pregnancy, and (c) low-back pain during menstruation. The results show that episodic low-back pain before pregnancy is not correlated with any aspect of labour pain. However, it is significantly correlated with episodes of low-back pain during pregnancy. In contrast, low-back pain during menstruation is significantly correlated with labour pain scores recorded for back and front contraction pain as well as for continuous back pain. The significant correlation of labour pain with back pain during menstruation suggests that both share a common underlying mechanism. Similarly, the correlation of low-back pain during pregnancy with episodes of acute low-back pain before pregnancy suggests that the strain on back muscles during pregnancy may activate the mechanisms that underlie the usual forms of low-back pain.

Backache and Its Prevention

Low back pain (LBP) is a symptom produced by disorders of the lumbar spine. It may be impossible to prevent all LBP, and while most episodes of acute LBP are self-limiting, the disorders producing recurrent and chronic LBP are usually incurable. The difficulties in diagnosing the disorders complicate effective management and prevention; however, prevention of spinal trauma reduces the incidence and prevalence of LBP. Effective preventive measures include the reduction of road trauma and smoking, improved vehicle seating, the control of vehicle vibrations, careful worker selection, job redesign, improved physical fitness, and the proper use of the spine in the home, at school, at work, and in sports. Frymoyer includes these and other measures in his tips to prevent LBP. Medical and paramedical professionals must be sure their investigations and treatments do not contribute to making the disorder chronic and more complex. The inappropriate use and interpretation of spinal investigations and the overzealous use of surgical procedures certainly add to the problem. An agreement on an acceptable "glossary" of lumbar terms and clinical syndromes is needed together with a new research emphasis on prevention and a continuation of research efforts in epidemiology, etiology, and management of LBP. Effective public education is vital, so that everyone is aware of the causes and methods of prevention of LBP. Discussion on the "20th-century epidemic of LBP" may be concluded on an optimistic note by citing White, who considers most LBP to be preventable and controllable with simple measures, reinforcable through public education, which can do for LBP what has been done in the field of dental hygiene.