Incidence and Course of Low Back Pain Episodes in the General Population

Cassidy, J. David; Côté, Pierre; Carroll, Linda; Kristman, Vicki L.

doi:10.1097/01.brs.0000190448.69091.53

Cited by 281 publications

(173 citation statements)

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“…A recent review infers the prevalence of LBP to be highest in middle-aged adults and in women [4]. Another report suggests that LBP is more frequent and with longer episodes in old than in young adults [5]. Since both the number and proportion of individuals older than 65 years are increasing in most western populations [6] it seems reasonable to assume that LBP will result in an even greater health care burden in the future [7].…”

Section: Introductionmentioning

confidence: 99%

The prevalence and severity of low back pain and associated symptoms in 3,009 old men

et al. 2013

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Purpose The aim of this study is to evaluate the prevalence and severity of low back pain (LBP) and the influence of sciatica and neurological deficits in old men. Material and method Mister osteoporosis Sweden includes 3,014 community-dwelling men aged 69-81 years. At study start 3,009 participants answered questions on LBP, low back pain and sciatica (LBP ? SCI) or low back pain and sciatica with associated neurological deficits (LBP ? SCI ? NEU) during the preceding 12 months. Data are presented as proportions or medians with mid-quartile ranges. Differences between groups were tested by v 2 test and Kruskall-Wallis test. Conclusions The 1-year prevalence of LBP in community living men aged 69-81 years was close to 50 % but for individuals with LBP or LBP ? SCI the morbidity was low with more than two-thirds having no limitations in ADL. In men with LBP ? SCI ? NEU more than one-third rated the pain as severe and close to half had limitations in ADL.

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Section: Introductionmentioning

confidence: 99%

The prevalence and severity of low back pain and associated symptoms in 3,009 old men

et al. 2013

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“…This group is described as consisting of individual muscles, including the semispinalis, multifidus, and rotatores. The paravertebral muscles and vertebral column receive significant scientific attention in clinical medicine, because of the prominence of back pain and spinal pathologies in humans (Boal and Gillette, 2004;Cassidy et al, 2005;Balague et al, 2007); however, our morphological understanding of these muscles is poor.Slijper (1946) studied the structure of paravertebral muscles in a wide range of large mammalian species, including the dugong (Dugong dugon) and armadillo (Dasypus). This muscle group has also been described in…”

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confidence: 99%

Morphology of the Lumbar Transversospinal Muscles Examined in a Mouse Bearing a Muscle Fiber‐Specific Nuclear Marker

Cornwall

Deries

Duxson

2010

The Anatomical Record

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Although the morphology of human lumbar transversospinal (TSP) muscles has been studied, little is known about the structure of these muscles in the mouse (Mus musculus). Such information is relevant given mice are often used as a ''normal'' phenotype for studies modeling human development. This study describes the gross morphology, muscle fiber arrangement, and innervation pattern of the mouse lumbar TSP muscles. A unique feature of the study is the use of a transgenic mouse line bearing a muscle-specific nuclear marker that allows clear delineation of muscle fiber and connective tissue boundaries. The lumbar TSP muscles of five mice were examined bilaterally; at each spinal level muscles attached to the caudal edge of the spinous process and passed caudally as a single complex unit. Fibers progressively terminated over the four vertebral segments caudad, with multiple points of muscle fiber attachment on each vertebra. Motor endplates, defined with acetylcholinesterase histochemistry, were consistently located half way along each muscle fiber, regardless of length, with all muscle fibers arranged in-parallel rather than in-series. These results provide information relevant to interpretation of developmental and functional studies involving this muscle group in the mouse and show mouse lumbar TSP muscles are different in form to descriptions of equivalent muscles in humans and horses. Anat Rec, 293:2107Rec, 293: -2113Rec, 293: , 2010. V V C 2010 Wiley-Liss, Inc.Key words: paravertebral muscles; lumbar; morphology; mouse; fiber arrangement This work examines the normal morphology of the transversospinal (TSP) muscles of the laboratory mouse (Mus musculus). The TSP muscles are a subgroup of the paravertebral muscles, located in the space between the spinous and transverse processes of the vertebral column, and existing throughout the spine between upper cervical spine and sacrum (Slijper, 1946). This group is described as consisting of individual muscles, including the semispinalis, multifidus, and rotatores. The paravertebral muscles and vertebral column receive significant scientific attention in clinical medicine, because of the prominence of back pain and spinal pathologies in humans (Boal and Gillette, 2004;Cassidy et al., 2005;Balague et al., 2007); however, our morphological understanding of these muscles is poor.Slijper (1946) studied the structure of paravertebral muscles in a wide range of large mammalian species, including the dugong (Dugong dugon) and armadillo (Dasypus). This muscle group has also been described in

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“…In the US, back pain causes an average loss of 5.3 work-hours per week [26]. Every year in the general population, 4 out of every 1,000 individuals become disabled because of back pain [5]. Despite new disability management and clinical interventions designed to shorten work absences, reducing work disability associated with back pain remains an elusive goal.…”

Section: Introductionmentioning

confidence: 99%

“…Recent research shows that the course of back pain is episodic and that a substantial minority of patients does not experience resolution of their pain and disability [5,8,12,13,21,31,32,37]. A recent review of the literature shows that the rate of recurrence of work disability related to back pain depends on the definition used to measure recurrence and on the study population.…”

Section: Introductionmentioning

confidence: 99%

“…Despite new disability management and clinical interventions designed to shorten work absences, reducing work disability associated with back pain remains an elusive goal. One reason for the lack of success is the continuing reliance on models that conceptualize back pain as an acute condition that follows a uni-directional path over time rather than as a chronic disorder with recurring episodes of disabling pain [5,15].…”

Section: Introductionmentioning

confidence: 99%

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Patterns of sick-leave and health outcomes in injured workers with back pain

et al. 2008

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Little is known about the sick-leave experiences of workers who make a workers' compensation claim for back pain. Our objective is to describe the 1-year patterns of sick-leave and the health outcomes of a cohort of workers who make a workers' compensation claim for back pain. We studied a cohort of 1,831 workers from five large US firms who made incident workers' compensation claims for back pain between January 1, 1999 and June 30, 2002. Injured workers were interviewed 1 month (n = 1,321), 6 months (n = 810) and 1 year (n = 462) following the onset of their pain. We described the course of back pain using four patterns of sick-leave: (1) no sick-leave, (2) returned to worked and stayed, (3) multiple episodes of sick-leave and (4) not yet returned to work. We described the health outcomes as back and/or leg pain intensity, functional limitations and health-related quality of life. We analyzed data from participants who completed all followup interviews (n = 457) to compute the probabilities of transition between patterns of sick-leave. A significant proportion of workers experienced multiple episodes of sick-leave (30.2%; 95% CI 25.0-35.1) during the 1-year follow-up. The proportion of workers who did not report sick-leave declined from 42.4% (95% CI 39.0-46.1) at 1 month to 33.6% (28.0-38.7) at 1 year. One year after the injury, 2.9% (1.6-4.9) of workers had not yet returned to work. Workers who did not report sick-leave and those who returned and stayed at work reported better health outcomes than workers who experienced multiple episodes of sick-leave or workers who had not returned to work. Almost a third of workers with an incident episode of back pain experience recurrent spells of work absenteeism during the following year. Our data suggest that stable patterns of sick-leave are associated with better health.

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Incidence and Course of Low Back Pain Episodes in the General Population

Abstract: Most new and recurrent LBP episodes are mild. Less than one third of cases resolve annually, and more than 20% recur within 6 months. LBP episodes are more recurrent and persistent in older adults.

Cited by 281 publications

References 50 publications

The prevalence and severity of low back pain and associated symptoms in 3,009 old men

The prevalence and severity of low back pain and associated symptoms in 3,009 old men

Morphology of the Lumbar Transversospinal Muscles Examined in a Mouse Bearing a Muscle Fiber‐Specific Nuclear Marker

Patterns of sick-leave and health outcomes in injured workers with back pain

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