Best Pract Res Clin Rheumatol. 2012 (Apr); 26 (2): 263–280 ~ FULL TEXT
Scott Haldeman, MD, Professor, Deborah Kopansky-Giles, DC, MSc, Eric L. Hurwitz, DC, PhD, Damian Hoy, BAppSc
(Physio), MPH, PhD, W. Mark Erwin, DC, PhD, Simon Dagenais, DC, PhD, MSc, Greg Kawchuk, DC, PhD, Björn Strömqvist, MD, PhD, Nicolas Walsh, MD
Department of Neurology,
University of California,
Spinal disorders and especially back and neck pain affect more people and have greater impact on work capacity and health-care costs than any other musculoskeletal condition. One of the difficulties in reducing the burden of spinal disorders is the wide and heterogeneous range of specific diseases and non-specific musculoskeletal disorders that can involve the spinal column, most of which manifest as pain. Despite, or perhaps because of its impact, spinal disorders remain one of the most controversial and difficult conditions for clinicians, patients and policymakers to manage. This paper provides a brief summary of advances in the understanding of back and neck pain over the past decade as evidenced in the current literature. This paper includes the following sections: a classification of spinal disorders; the epidemiology of spine pain in the developed and developing world; key advancements in biological and biomechanical sciences in spine pain; the current status of potential methods for the prevention of back and neck pain; rheumatological and systemic disorders that impact the spine; and evidence-based surgical and non-surgical management of spine pain. The final section of this paper looks to the future and proposes actions and strategies that may be considered by the international Bone and Joint Decade (BJD), by providers, institutions and by policymakers so that we may better address the burden of spine disorders at global and local levels.
From the FULL TEXT Article:
Spinal pain and its associated disorders affect more people and have greater impact on work
capacity and health-care costs than any other musculoskeletal condition. Recent studies suggest that,
in many societies, spinal disorders are a greater source of disability and impact the consumption of
more health-care resources than any other class of diseases or health problems.  Despite, or perhaps because of its impact, spinal disorders remain one of the most controversial and difficult conditions for clinicians, patients and policymakers to manage.
One of the difficulties in reducing the impact of spinal pain is the wide and heterogeneous range of specific diseases and non-specific musculoskeletal disorders that can involve the spinal column, most of which manifest as spinal pain. These disorders have been classified in multiple ways but the most widely accepted classification includes four well-defined clinical categories as noted in Table 1.
Spinal disorders with serious or systemic pathology. This category includes disorders caused by congenital and developmental abnormalities, neoplasm, infection disorders, systemic inflammatory disorders and serious trauma. It has been reported that serious spinal pathology, however, accounts for only 1–2% of patients who present with symptoms of spinal pain. [2, 3]
Spinal pain with neurological deficits. The primary neurological deficits that fall into this category include compression of nerve roots, the spinal cord or the cauda equina. It has been estimated that 5–10% of patients presenting with low back pain (LBP) have substantial neurologic involvement.  In one survey, features of sciatica were reported by 11.6% of those with LBP; unfortunately, this study did not determine the frequency of actual neurological deficits which is estimated to be a considerably smaller percentage.  A recent 10–year survey from the US military noted an incidence of cervical radiculopathy at 1.79 per 1000 person-years. 
Non-specific spinal pain, which has also been described as mechanical pain or strain accounts for 90% or more of all people who experience spinal pain. There is growing evidence that it is not currently possible to identify the structure, pathology or source of pain in the majority of patients with these symptoms. Clinicians have postulated that pain can be generated by virtually all tissues of the spine and have defined pain syndromes based on the specific tissues, structures or suspected pathology which are assumed to be causing pain. These theories, however, have yet to be widely accepted and many of the testing methods for these suspected diagnoses have yet to be validated.
Spinal pain referred from non-spinal pathology. A number of systemic, abdominal and pelvic pathologies may present as spinal pain. There are no data to determine how frequently this type of referred pain occurs but it is commonly included as a symptom of a number of visceral disorders as listed in Table 1.
Given the broad scope of spinal problems and the impact of these disorders on all societies, irrespective
of age, sex or social status, it would be reasonable to expect that there would be a uniform,
generally-accepted approach to the assessment and management of these symptoms. Unfortunately,
there are numerous studies that have demonstrated that the opposite is true.
In developed or wealthy nations, there is a rapid growth in the proportion of the health-care
budgets being spent on the diagnosis and treatment of people with spinal pain.  A recent review was able to identify over 200 treatment options available to patients for the management of LBP alone.  Very few of these options have been shown to have significant support in the form of evidence. It is also becoming evident that the increased expenditure on the treatment of spinal pain has not had the desirable result and has, in fact, been associated with increasing disability. 
On the other hand, in developing countries, governments and other health funders, such as international
and non-government organisations, have tended to focus the majority of resources on addressing communicable conditions such as diarrhoea and respiratory infections, and chronic conditions such as spinal pain, have been somewhat ignored.  While there are many traditional treatments for spinal disorders in many of these settings, mainstream services for the prevention and management of spinal disorders are minimal, and this is particularly the case in rural areas.
This report discusses a few of the developments and changes in our understanding of this topic over
the past decade and assists in prioritising the goals of the Bone and Joint Decade (BJD) for the next 10
years as it applies to spinal disorders.
Burden and trends of spinal disorders
The past decade has greatly increased our understanding of the impact of spinal disorders on society
in both developed or high-income countries and developing or ‘under served’ low- and middle-income
The past decade has seen the publication of multiple epidemiologic studies that have demonstrated the
widespread, almost universal nature of spinal pain syndromes and the extent of the impact of these
symptoms on productivity in wealthy countries with high health expenditures. In the developed countries,
LBP has a lifetime prevalence of between 50% and 85%. [8, 9] Point prevalence studies in adults have revealed that between 6% and 35% of the population experience LBP at any one point in time, and 1–year and 1–month period prevalence ranges from 10% to 50% and 21% and 39%, respectively. The incidence of lumbar intervertebral disc herniation is estimated to be only 0.1–0.5% per year. However, degenerative changes and disc abnormalities found in imaging studies, which initially were felt likely to be important, have not been demonstrated to be a causal factor in most cases of back pain.  The ranges of prevalence and incidence estimates of back pain among children and adolescents are not markedly different from those of adults. In addition to age and gender, several sociodemographic, physical, behavioural, psychological and psychosocial factors have been found to increase the risk of back pain, including socioeconomic status and level of education, body mass index, smoking and self-perceived health status. Depression and psychological distress are likely both causes and consequences of back and other musculoskeletal pain, all of which are often shared co-morbidities. [10, 11] Physical activity appears to improve prognosis. 
The Bone and Joint Decade 2000–2010 Task Force on Neck Pain and Its Associated Disorders undertook
a best-evidence synthesis to estimate the burden and identify determinants of neck pain
(a) in the general population,
(b) following traffic collisions and
(c) in workers. [13–15]
One-year prevalence estimates in adults ranged from 30% to 50%, though estimates of activity-limiting prevalence were typically less than 10%.  Incidence estimates ranged from 0.055 per 1000 person-years for disc herniation with radiculopathy to 213 per 1000 person-years for self-reported neck pain, which appears to peak in middle age. Reported frequencies of neck pain among children and adolescents are similar to those of adults. The incidence of whiplash-associated disorders is at least 300 per 100,000 individuals and appears to have increased markedly over the past 30 years.  Risk and prognostic factors for neck pain and disability are largely the same as those for back pain. With the exception of neck pain with radiculopathy, degenerative disc changes do not appear to be associated with neck pain incidence. Psychological distress and poor coping were found to impede recovery whereas physical activity may improve prognosis.
Although not as prevalent as back pain, neck pain is also very common in workers throughout the
developed world and results in appreciable disability and reduced productivity. The one-year prevalence
of activity-limiting neck pain in workers ranges between 11% and 14%, though 25% to almost 50%
of workers experience at least some neck pain during the year.  Workers in jobs requiring prolonged sitting, repetitive or precision work or awkward postures are at increased risk of neck pain. LBP is the most common musculoskeletal disorder in the workplace in North America and Europe and the second-most frequent cause of worker absenteeism.  One-year prevalence of lost work time due to LBP in the United Kingdom has been estimated to be 11% in men and 7% in women.  The lifetime and 1–year prevalence of disabling back pain among workers in the US is an estimated 28% and 8%, respectively, with about 40% of lost work days attributable to disabling pain.  Pain and disability
frequencies vary according to type of occupation and job demands. High physical load, low job satisfaction,
monotonous work, poor social support and high-perceived stress and job demands have been
linked to an increased risk of occupational back pain. 
Direct health-care costs associated with LBP management are substantial, with estimates from the
US ranging from $12.2 billion to $90.6 billion in 1996 and 1998, respectively. [19, 20] Incremental health-care expenditures for adults with spine problems in the US in 2005 were an estimated $85.9 billion representing 9% of the total national expenditure. Indirect costs such as lost productivity and worker absenteeism push the economic burden of back and neck pain even higher. For example, in Australia, indirect costs associated with LBP in 2001 were estimated to be 9 times greater than direct
Evidence strongly suggests that the prevalence of musculoskeletal pain, including back and neck
pain and the incidence of whiplash-associated disorder, has increased in recent years in at least some
developed countries.  More people with back pain sought care from health-care providers as well. In the US, disability claims for musculoskeletal disease increased from 15.2% in 1992 to 28.2% in 2006, and the percentage of persons with spine problems reporting functional limitations increased from 20.6% in 1997 to 28.3% in 2006.  Total estimated spine-related expenditures among adults increased 65% between 1997 and 2005 and 82% between 1997 and 2006 in the US, while measures of mental health, physical functioning, work or school limitations and social limitations among adults with spine problems worsened. [1, 23] Heart disease and stroke are the only conditions with significantly higher health-care expenditures.
There is considerable variation in the reported prevalence of spinal problems in low- and middle income
countries. The range of point prevalence for LBP is from 1% to 39% , and for neck pain is, from 3% to 41%.  The difference in prevalence between low- and high-income countries is not significant at the 0.05 level for either lowback or neck pain; however, a positive and significant correlation exists between a country’s Human Development Index and point prevalence.  The mean prevalence for both neck and LBP is highest in women and in the oldest age groups. [26, 27] Despite the prevalence differential, based on the most recent prevalence estimates, over four times as many people experience spinal pain at any one point in time in developing countries compared with high-income countries. [26, 27]
Many of the risk factors for spinal pain in high-income countries, such as age, gender, obesity, job
demands, anxiety, depression and lack of social support in the workplace [13, 26–28] are also likely associated with spinal pain in low- and middle-income countries. It has been estimated that 80–90% of the population in these countries are involved in ‘heavy work’ ; subsistence communities, in particular, face enormous daily demands, and studies have found activities such as the collection of water and farming can increase the risk of spinal pain. [30, 31]
Spinal disorders can have a very large impact on individuals and their families, communities, health
systems and businesses. [32, 33] It can present itself in a number of ways, including pain, activity limitations, participation restrictions, carer burden, use of health-care resources and financial burden. A number of studies have demonstrated the impact that spinal pain has on an individual’s ability to perform their daily activities in developing countries. [30, 34] In rural subsistence communities, many of these activities are directly related to the health of the individual and their family. For example, debilitating back pain may impact one’s ability to farm, or collect clean drinking water. A study in Nigeria found individuals with chronic spinal pain were more likely to have mood and substance abuse disorders and activity limitations as well. 
The number of people experiencing spinal pain in developing countries is likely to increase in the
future. Age is one of the most common risk factors for spinal pain, and the greatest effects of population
ageing are predicted in low- and middle-income countries ; by 2050, it is predicted there will be over five times as many people over the age of 40 years living in these countries compared to wealthier countries.  In addition, the number of people who are obese is expected to increase most dramatically in the developing world over the coming two decades.  In urban areas, there is also rapid industrial growth and the prevalence of occupational spinal pain is becoming common. 
Furthermore, increased motorisation in developing countries is likely to increase the incidence of
whiplash-associated disorders and other motor vehicular-related trauma, and while there is relatively
little information on the incidence of these disorders in developing countries, one study has estimated
that 238,000 people per year die in road crashes in South Asian countries alone, and for every death,
there are 20 hospitalisations, 50 emergency room visits and more than 100 minor injuries. 
Key developments in research, prevention and management during the last decade
The basic sciences
Over the last century, the spine has been studied with increased specialisation in many different
fields of basic and experimental science. As a result, distinct domains of spine-specific knowledge have
been created. While each domain is deserving of its own investigative effort, each of these systems
contribute to our understanding of the structure, function and pathology that affects the spine. There
has been an especially close interaction within the fields of anatomy, neurophysiology, pathology and
A major research focus has been spinal biomechanics with the assumption that a better understanding
of how the spine responds to injury and pathology may lead to better prevention efforts and
treatment protocols. In the BJD (2000–2010), several investigative areas that originated within the
lumbar spine have been applied to the cervical spine. These included the definition of normal kinematics , disc pressure measurements and concern regarding alterations in the segment adjacent to a surgical target  as well as insight into the mechanisms of whiplash through assessment of facet capsule motion. 
While the evaluation of various surgical constructs is a basic activity in spinal biomechanics, the last
decade saw the advent of the artificial disc dominate biomechanics testing on the bench top and
through modelling  as did testing of a variety of materials and procedures associated with vertebroplasty. 
Further advances were made in the creation of disc injury as a model for studying the aetiology of
degenerative disc disease and its treatment. Specifically, a technique that disrupts the vertebral endplate
has been shown to initiate degenerative change in pigs that is similar to humans.  Still, a model of disc injury that does not disrupt surrounding tissues has yet to be developed.
A dominant trend in the study of spinal function over the last 10 years has resulted in an explosion
of knowledge of the spine at a cellular/molecular level and, as a result, has increased our understanding
of the relation between spinal mechanics and cellular function.  At the other end of the spectrum, at the gross level, further advancements have been made into the understanding of pathogenesis and progression of disc herniation. 
While the intervertebral disc remained an area of intense investigation, the role of muscles in
patients with back pain has been an important area of research. For example, the transversus–
abdominus muscle has been shown to have altered function in patients with back pain.  Furthermore, a delay in this muscle’s reflex response has been observed to be predictive of low back injury in some people. 
Basic science studies are starting to be applied to non-surgical treatment modalities as well in an
attempt to understand the mechanisms of these common interventions. One example is the observation
that subjects who report benefits from spinal manipulation have been reported to have significant
changes in spinal stiffness and muscle function compared to subjects who report no benefit. 
Attempts to define a pathological cause or pain generator for spinal pain in specific individuals
continue to be a significant challenge. The most common theories often involve a presumed association
with degenerative changes that can affect the intervertebral disc and/or facet joints. For the past
decade, these structures have been the focus of much of the experimental and basic science research.
This research has resulted in an increase in our understanding of the precarious nature of the
intervertebral disc nutrient supply and the impact of pH and low oxygen content on disc metabolism
and pathology. [51, 52] It is only recently that the in-growth of nociceptive capable neurons, expression of neurotrophic and pain-inducing molecules, increased expression of inflammatory cytokines and a progressive loss of viable disc cells has been associated with degenerative disc disease. [53–55] These observations have led to further interest in the concept of the painful disc. Research efforts involving magnetic resonance imaging (MRI) studies coupled with epidemiological and basic science research have attempted to differentiate abnormal degenerative disc disease from normal ‘aging’. [56, 57] The notion that disc degeneration and ‘normal aging’ might be considered as different conditions may, at some time in the future, allow clinicians to better define patients who are likely to respond to interventions directed at the disc.
The potential use of anabolic growth factors and stem cell therapies for the treatment of degenerative
disc disease represents a new approach to manage the process of degenerative disc disease.
A number of clinical trials are currently underway to determine whether such approaches can
ameliorate spinal pain. There are now attempts to ‘grow’ discs in the laboratory with the hope that an
intervertebral disc, inclusive of the endplates, annulus and nucleus pulposus might be manufactured
and used for potential surgical replacement. There have been some encouraging results looking at this
option in animal trials.
The last decade has led to an almost complete revolution of the notion held not long ago that the
intervertebral disc was a rather inert biological structure where now it is recognised that the intervertebral
disc is a very complex structure with the potential of causing either directly or indirectly, a host of painful syndromes. The challenge for the next decade will be to decode the fundamental mechanisms central to
the contribution of the intervertebral disc to spinal pain and to develop effective and efficacious treatment.
The important question behind all this research, however, remains whether these scientific achievements
will have any impact upon spinal pain and the burden it poses to the world’s population.
Most individuals will experience an episode of back pain at some point in their lifetime. Furthermore,
approximately 2/3 of people who have an episode of back pain will suffer recurrences and 1/3
will experience periods of disability . At this time, however, it appears unlikely that a primary episode of back pain can be prevented in most people.
It is the consequences of LBP that may be more relevant in the consideration of prevention initiatives:
that is, what can one do to prevent the next episode or minimise its impact? The European Guidelines
for Prevention in Low Back Pain  identified these consequences as the ‘cost’ to individuals and society – work loss time and productivity, care seeking, health-related quality of life and compensation.
Unfortunately, the evidence surrounding the prevention of LBP is limited. Problematic is the wide
variance of external and intrinsic factors influencing the onset and recurrence of back pain. The most
powerful risk factor for a new episode of back pain is a history of back pain in the previous 12 months.
Beyond that, the most frequently reported risk factors include:
heavy physical work (frequent bending, twisting, lifting, pulling and pushing),
static postures and vibrations;
lifestyle factors such as
smoking and obesity;
and psychosocial factors such as
level of education,
mental stress at work and
Common sense would dictate that controlling these risk factors through preventive efforts (e.g., work
modification, weight loss and education) may impact the incidence of LBP. Unfortunately, there is little
to no evidence to support these or any specific interventions as effective in preventing back pain
recurrences or long-term low back disability in the general or working populations.
Several systematic reviews (Cochrane and others) evaluating back pain prevention have been
published in the literature within the past decade. The review topics included:
exercises for prevention of LBP recurrences ,
use of lumbar supports ,
shoe insoles ,
manual materials handling advice and assistive lifting devices ,
back schools ,
individual patient education  and
behavioural intervention. 
None of these reviews found solid evidence that these prevention mechanisms were effective.
Synthesising the results of these reviews as well as other published research and recognising the challenges of the back pain enigma, the European Guidelines working group came to the following conclusions regarding back pain prevention:
physical exercise is recommended to reduce the frequency and duration of repeat episodes of back pain. Unfortunately, no specific exercise approach was favoured.
information and education about back problems should be considered.
further research is required, specifically a need for good quality randomised clinical trials to determine the effectiveness of specific interventions aimed at certain risk/target groups.
Identified study areas included:
health promotion programme effectiveness,
impact of daily physical activity,
information aimed at reducing fear-avoidance and demedicalisation of back pain and
the generalisability of different approaches to broad populations (adult, workers and adolescents).
Amongst the recent literature reviewed, however, there is emerging, albeit limited evidence that
maintaining a healthy weight, stopping smoking and daily physical exercise may have protective
effects. These lifestyle approaches have been shown to also have a positive impact on other chronic
diseases such as diabetes, cardiovascular disease and others.
Rheumatological and systemic spinal disorders
Over the last decade, most professional groups and guideline committees have stressed the
importance of differentiating specific local or systemic diseases from non-specific musculoskeletal
disorders manifesting as spinal pain. This distinction is now considered paramount in determining
appropriate treatment. There is a growing emphasis on the importance of a detailed history and
physical examination followed by appropriate studies to make the correct diagnosis and optimally
treat. The primary goal of the initial history and physical examination is the identification of the so called ‘red flags’ for serious pathology which are likely to require further investigation.
If red flags for serious pathology as noted in Table 2 are identified, then additional testing and a firm diagnosis is necessary to guide treatment.
In the absence of red flags, however, there is a growing realisation that advanced testing is unlikely to positively impact the care patients receive. There is increasing evidence that tests such as imaging in the absence of red flags might actually negatively impact the outcome of patients and prolong disability by reinforcing the perception of the possibility of severe injury.
Evidence-based guidelines and non-surgical care
As the number of clinical trials conducted and published each year on common and innovative
diagnostic approaches to spinal disorders continues to increase, often with increasingly sophisticated
research methodology, there has been a growing realisation that it is an impossible challenge for most
practicing clinicians, patients and policymakers and payers of health-care to read and synthesise all
relevant primary studies. To address this problem, there has been considerable focus on the undertaking
of high-quality systematic reviews and clinical practice guidelines (CPGs). The methodology through which these clinical guidelines are developed has increased markedly in an attempt to
identify, appraise, summarise and synthesise primary research studies to facilitate knowledge transfer
for practicing clinicians. 
There are now multiple systematic reviews which have been published on the management of
neck and LBP by various groups, including the Cochrane Collaboration, an international network of
scientists dedicated to conducting methodologically rigorous systematic reviews to answer important
Its Cochrane Back Review Group has conducted systematic reviews for
a variety of conditions related to the spine, including:
disc disease [67, 68],
failed back surgery ,
non-specific pain ,
spondylosis  and
A wide range of
interventions has been evaluated by the Cochrane Back Review Group, including
Chinese herbal medicine ,
multidisciplinary rehabilitation ,
radiofrequency denervation ,
spinal manipulation  and
These systematic reviews now play an important role in determining the most appropriate use for these interventions (if any) in the management of spine pain.
Clinical practice guidelines
Several CPGs have also been conducted in the past decade to help guide clinicians, patients,
insurers, policymakers and other stakeholders making important decisions about neck pain and LBP.
The Bone and Joint Decade Neck Pain Task Force conducted a best-evidence synthesis related to the
epidemiology [13–15], diagnosis , prognosis [83–85] and treatment [86, 87] of neck pain and its associated disorders, including headache and radiculopathy. Its findings were disseminated in a series of presentations to stakeholders in different countries, and published as special issues of Spine (February 2008), European Spine Journal (April 2008) and the Journal of Manipulative and Physiologic Therapeutics (February 2009) to reinforce important messages.
This task force recommended the use of screening protocols to rule out cervical spine fracture in
patients presenting with neck pain who are at high risk, and the use of history, examination and
diagnostic imaging or electrodiagnostic testing to diagnose the aetiology of substantial neurologic
findings.  There was insufficient evidence to support routine use of diagnostic imaging and other testing for the assessment of non-specific neck pain, as findings rarely lead to improved management and outcomes. Non-invasive interventions recommended for neck pain included spinal manipulation or mobilisation, particularly when combined with exercise therapy and patient education, were felt to be supported by the available evidence.  Evidence was found to support the use of epidural injections or decompression surgery for short-term improvement of neck pain with radicular symptoms, but not non-specific neck pain. 
CPGs related to the assessment and management of LBP have been conducted in
New Zealand ,
Norway  and the
United States [92, 93], as well as
multinational European efforts. [94–96]
A best-evidence synthesis was recently conducted to evaluate and compare 10 multidisciplinary CPGs from the past decade related to the assessment and management of LBP.  There was general agreement among the CPGs that clinicians should screen for red flags that may indicate rare but serious spinal pathology, including cancer, cauda equina syndrome, fracture and infection, which may require additional diagnostic laboratory testing or imaging to be ruled out.
Evidence from CPGs suggests that management of spinal disorders should focus on patient education, advice to remain active, and short-term use of acetaminophen, non-steroidal anti-inflammatory drugs, or spinal manipulative therapy to relieve symptoms. If symptoms persist beyond 6 weeks, the addition of therapeutic exercises, behavioural therapy or opioid analgesics can then be considered. A similar approach was recommended for spinal disorders with neurological involvement, although it may be necessary to consider epidural injections or decompression surgery if symptoms are incapacitating or fail to improve with more conservative care.
Spine surgery has evolved rapidly over the past 10 years, increasingly based on evidence which has been, to some extent, industry driven and has led to some credibility concerns.  There has been an enhanced focus on patient-reported outcomes of surgery. Large national and international registers now emphasise the need for documentation to enable identification of, for example, new methods and inferior surgical techniques and for bench marking.  Spine surgery has actually been at the forefront in patient-reported outcome measures (PROMs).
The past decade has seen remarkable growth in the sophistication of research into spinal surgical
procedures that hold the promise of greatly advancing our understanding of spinal disorders and
which have increased the available treatment options. Stem cell transplantation for disc regeneration
has shown promising results but mainly in vitro so far. More complex procedures to address spinal
deformities in younger children with expanding sophistication of implants have been developed.
Techniques enabling primary tumour operation en bloc are now being carried out in highly specialised
centres. There is increasing research on the use of vertebroplasty or kyphoplasty for painful primary
and especially metastatic tumours of the spine. The past decade has seen further development of
micro-invasive thermal ablation therapies. In the treatment of fractures, the use of percutaneous
fixation techniques has expanded rapidly. The role of vertebroplasty/kyphoplasty in osteoporosis is
currently the subject of a great deal of research and debate.
The last decade has seen remarkable growth in the number and sophistication of motion preservation
surgical techniques which, to a large extent, are considered a substitution for fusion surgery but,
so far, with limited long-term follow-up to determine effectiveness and especially cost-effectiveness.
During the same period, inter-spinous implants under local anaesthesia has become the preferred
surgical treatment for spinal stenosis replacing open procedures in many patients.
The significance of osteoporosis related to spine disorders on morbidity and mortality has been
recognised and has resulted in improved awareness and better secondary prevention through fracture
Opportunities in the next decade
There is a growing realisation that it may not be possible to understand fully the impact of spinal
disorders without a greater focus on large population-based surveys and longitudinal studies with
standardised definitions of pain and disability so that current disease burden, geographic variations
and trends over time may be accurately assessed. [26, 27]
There is good reason to expect that some of the advances in spine surgery during the next decade
are not even within our frames of references today but the road to some of the improvements has been
paved by recent research developments.
Minimising inefficient surgery for pain syndromes through more outcome studies and controlled
clinical trials to identify patients likely to benefit from surgery can be expected. Improving clinical
preoperative information by open MRI investigation performed in various body/spine positions may
help in this regard. Operations in real-time MRI with dedicated non-magnetic instruments and perioperative
three-dimensional (3D) navigation is being improved and simplified, making it possible to
use in a multitude of spinal procedures on a routine basis, thereby reducing postoperative morbidity.
Increasing research on combining synthetic bone substitutes with novel peptides for rapid and
improved fusion healing is likely.
Further development of disc implants, mimicking normal disc function with mobility and shock
absorption can be expected. The feasibility of stem cell treatment of disc degeneration still needs to be
established to see if it is meaningful or possible to reverse the degenerative cascade that may lead to
spinal degenerative pain. The host of changes inherent to degenerative disease such as vertebral
endplate calcification, progressive apoptosis of nucleus pulposus cells and the development of
a progressively more hostile nucleus pulposus ‘milieu’ create significant obstacles to restorative
applications within the advanced degenerative disc. Enhancement of nerve regeneration after traumatic
lesions of the spinal cord with a combination of peptides and scaffolds holds considerable
promise. Establishing more clear indications for vertebroplasty in osteoporotic fractures hopefully will
increase our understanding of the value of this procedure. At the same time, implementing knowledge
on spine trauma for mechanics in injury prevention and treatment in the developing world and targeted
tumour treatment with radio pharmaceuticals against, for example, spine metastases is being
The opportunities for advances in future spine surgery, however, may be more restricted by our own
conventional approaches and health economy than by the immense on-going research work in the
Consideration of recently developed conceptual models, such as the one for the onset, course and
care of neck pain  should be explored further.
The thoughtful use of the principles of life-course epidemiology to identify
(1) risk and prognostic factors and
(2) critical time points, over the next decade, should be considered a goal to gain greater understanding of potential preventive strategies and treatment approaches. 
The impact of spinal pain in low- and middle-income countries may be compounded as health
promotion and treatment services do not receive the resourcing seen in high-income countries, social
security systems are uncommon, and it is rare for individuals to have health insurance. Having said
that, many traditional treatments exist in developing countries, and a number of these may be effective
at reducing spinal pain and improving function. Further research is needed on how spinal pain affects
an individual’s participation, well-being and livelihood in the developing world. Investigating the
methods that traditional healers are using to manage spinal disorders may open new windows for
research of both psychosocial and physical factors that can help people in other countries with these
It is important to be careful not to prioritise clinical interventions ahead of public health and
preventive approaches to reduce the burden of spinal pain and disability. As observed in the United
States, dramatically increased spine-related health-care expenditures in the past decade have not
resulted in improved health status. [1, 23]
There is a growing recognition that it is important to emphasise studies designed
(1) to optimise prevention of pain and disability and
(2) to research knowledge translation projects that publicise effective evidence-based strategies, such as promotion of physical activity, which has health benefits well beyond pain prevention and relief. 
One realistic goal for the next decade is to encourage researchers to adopt recent recommendations
on defining low back and neck pain in epidemiological studies. [33, 101] This goal has the potential to significantly enhance our ability to compare and pool results across studies, and thus significantly improve our understanding of spinal pain.
In developing countries, governments and other aid programme donors have traditionally prioritised
high mortality, communicable diseases.  With the occurrence and impact from spinal conditions already substantial and likely to increase significantly over the coming decades, further research is needed to improve understanding of the occurrence, course, impact, risk factors and potential interventions for spinal pain in these countries. [29, 30, 102] The increasing World Health Organisation (WHO) focus on non-communicable diseases (NCDs), and the inclusion of musculoskeletal disorders within this initiative, has the potential to help direct resources towards research, prevention and treatment efforts.
A key focus of research and interventions in any context, and particularly in low- and middle income
countries, should include local participation, ownership and coordination.  Research and any interventions should be integrated with existing mechanisms and structures where
possible. National planning and policy development is needed. Advocacy and resource mobilisation
are critical primary steps to these processes. In many places, it will be necessary to build
local capacity in research methods and approaches to the prevention and management of
spinal pain. In addition, programmes should adopt a shared-risk factor approach and be longitudinal
or population-based where relevant. Attention should also be paid to cost effectiveness of
Although there are numerous high-quality guidelines for the management of neck and back
pain, there remain areas of discrepancy between these guidelines that need to be resolved. One
goal being considered by the BJD is to reconcile the differences between these guidelines and
increase the scope of the guidelines. Also, many of the current guidelines are suitable only for the
developed nations with access to advanced testing and high-tech treatment methods. They often
do not apply to countries and communities where there are limited financial resources and clinical
expertise. For example, it would be both beneficial and realistically possible to develop guidelines
that include a review of the current evidence for the management of spinal deformities, spinal cord
injuries, fractures and other red flag diseases to guide clinicians in the management of these more
serious spinal disorders. This would require the establishment of an infrastructure for international,
multidisciplinary collaboration on research and education which may be facilitated by
Barriers and facilitators to achieving the goals
There are multiple barriers to reaching the goals noted above that will have to be addressed if we
hope to advance our understanding and management of spinal disorders over the next decade. They
(1) obtaining consensus from various stakeholders on definitions of conditions and outcomes.
Without consensus on these definitions, it will be difficult to compare and analyse the results from
(2) the utilisation of these case definitions in population-based surveys and longitudinal cohort
studies needs encouragement and monitoring. In some instances, access to large national and
stakeholder databases will be very useful even though these may be incomplete.
(3) unfortunately, certain stakeholders in the medical – pharmaceutical – surgical – industrial complex may perceive the research as not financially beneficial. There are already indications that certain stakeholders do not feel comfortable with the increased attention on prevention and low tech, low cost management of spinal pain. Recently, some of these stakeholders have actually walked away from interdisciplinary task forces or committees and elected to develop single-profession guidelines that support their approach to spinal pain. 
(4) research funding in the current economic climate is considerably challenging.
(5) researchers from low- and middle-income economies may, in some cases, experience greater
barriers to research, such as difficulties in constructing accurate sampling frames, and accessing
remote regions and villages. This can greatly add to the challenge of publishing academically
rigorous studies. Further to this, the majority of peer-reviewed journals only accept submissions in
There are, however, a number of factors that are facilitating the achievement of the goals.
(1) data showing increased prevalence of reported pain, disability and health-care expenditures have
stressed the need to identify modifiable factors to reduce the individual and societal burden of
(2) policymakers’ increased attention to the importance of health-care costs and comparative effectiveness of research in improving efficiency and quality of health-care.
Specific strategies/actions and who should undertake them
There are a number of relatively simple strategies that can be undertaken by the BJD to advance
these goals. There are two feasible approaches that should be considered.
The first is geared towards obtaining the data necessary to convince stakeholders to support future
projects to advance the health of people with spinal disorders.
This strategy should use the following steps:
(1) establish musculoskeletal disorders, including spinal conditions, as a priority within the WHO
non-communicable diseases initiative such that collaborative global efforts can be directed
towards broad surveillance studies and towards funding of research, treatment and prevention
programmes both at international and local levels.
(2) establish a multidisciplinary, international committee with wide representation from both clinical and epidemiological fields to develop standard definitions of low back and neck pain for use by
researchers, policymakers and clinicians.
(3) work with national authorities and the WHO to help facilitate the development of culturally
appropriate initiatives to address and mitigate the growing burden of spinal pain. Design and
implement large, long-term population-based cohort studies focussed on musculoskeletal health
and associated co-morbidities.
(4) improve awareness and education of the public and policymakers using social media, online tools,
education systems and public health and entertainment entities to disseminate a common message and work towards making spine care a priority when research and health-care priorities are being considered.
Another feasible approach is to work towards increasing the standard of care available to people
with spinal disorders.
This strategy should use the following steps:
(1) establish a multidisciplinary, international committee with wide representation from both clinical and epidemiological fields to distil existing guidelines from multiple disciplines to identify areas of consensus.
(2) develop a methodology to assess the available guidelines on back and neck pain and to reconcile
the differences between guidelines.
(3) work with national authorities to adapt guidelines so they are culturally appropriate and useful in developing nations.
(4) develop a methodology to produce guidelines for conditions such as red flags disorders and
deformities where there are unlikely to be randomised or other controlled clinical trials.
(5) work with all relevant stakeholders to develop, implement, monitor and evaluate a guideline
A feasible and realistic timeline
The timeline for these objectives will depend largely on obtaining appropriate levels of funding and
commitment from governments, professional societies, public health organisations and the research
There are a number of initiatives that are already in the pipeline that should facilitate this process.
For example, the global burden of low back and neck pain is currently being estimated as part of the
Global Burden of Disease Study 2005/2010 and results will be available in 2012. [8, 23] The Burden of Disease rankings compare the amount of death and disability caused by disease. Global Burden of Disease studies provide these rankings for the world and its major regions, and governments often consider these when assessing health priorities, allocating resources and evaluating the potential costs
and benefits of public health interventions.
The development of the World Spine Care Initiative is establishing multidisciplinary spine care
centres in underserved communities in a number of countries and is cooperating with government
health ministries and local hospitals to provide services. An underlying theme throughout this
initiative will be ensuring that the planning and decision-making processes are locally owned and
driven, that extensive community consultation takes place to facilitate this ownership and improve the
likelihood of sustainability, and that the services themselves are integrated with existing policy and
structures to avoid duplication and ensure that busy staff are not being pulled away from their usual
The approach of the centres will be decided in close cooperation with the local community;
traditional treatments will likely complement treatments such as physiotherapy and chiropractic care.
For more Western concepts such as physiotherapy and chiropractic, no treatments will be recommended
unless they are evidenced based. A key concept for the capacity-building activities will be to
ensure that capacity can be applied to other areas of people’s work outside of spine care (e.g., project
management, monitoring and evaluation, research methods, etc.).
More broadly, the initiative will partner with other organisations and government departments to develop public health campaigns that target risk factors that are shared among the chronic diseases (e.g., physical inactivity). This initiative as a whole will be informed through local research on the burden and perceived causes of spinal pain in these communities, the ways that people manage their spinal pain (including treatment) and other ways to address this burden. This initiative, still in its early development stages, commenced in 2011 and has begun work in Botswana and India.
The BJD has committed to forming a Multidisciplinary Guideline Development Committee with the
goal of distilling existing guidelines from multiple disciplines to identify areas of consensus. The goal is
to develop and culturally adapt evidence-based, practical, multidisciplinary, patient-centred guidelines
for prevention and management of spinal disorders by 2015.
The BJD has also made the decision to improve awareness and to initiate a public education programme
using social media, online tools, education systems, public health and entertainment entities
to disseminate a common message and work towards prevention. It is expected that by 2015 there will
be a concerted effort to empower patients to participate in care, as well as to target primary-care
physicians and home-education programmes for community-based spine care.
Measurement of success and outcome of future goals
The ultimate goals of the BJD initiatives are to see a measurable reduction in:
(1) reports of back and neck pain and related disability in population surveys and cohort studies;
(2) workers’ compensation and personal injury claims and costs; and
(3) interventional health-care services and costs associated with chronic spine pain and disability.
These goals can be measured by accessing annual national population-based surveys and long-term
prospective studies using validated outcome measures of pain, function and quality of life. Adoption of
the International Classification of Diseases (ICD) coding by all countries will enable such tracking and
contribute greatly to our understanding of the true burden of spinal disorders worldwide.
The interim initial measurement of success will be the ability to mobilise the financial resources to
initiate the recommended research and to develop the Committees tasked to develop the terminology
and guideline projects.
Assuming the funding for the research projects and task forces is achieved and the projects are
mobilised and become functional, the next measurement of success will be the publication of the
conclusions of these committees. Once published, success will be determined by the ability of the BJD to disseminate the findings and ensure that patients and primary-care physicians are aware and are using guidelines for community-based spine care.
The last decade has seen an exponential increase in the amount of research devoted to spinal
disorders. This research has been notable in the field of epidemiology and population-based research,
experimental studies into disc pathology, neurophysiology and spinal biomechanics, the assessment of
the efficacy of diagnostic techniques and prevention approaches, the introduction of advanced surgical
techniques and the development of clinical guidelines.
This research has provided a set of tools and level of understanding that should allow for a much
more rational and consistent approach to spinal disorders throughout the world and allow for some
determination of the resources and personnel necessary to reduce the burden of this disorder on
societies in both developed and developing countries.
At a June 2011 UN meeting on the WHO launch of the NCDs Initiative, a leading world health
economist described NCDs as “an emergency in slow motion” and advised that by 2050, 50% of the
world’s middle- and low-income countries will be bankrupted by the weight of NCDs if nothing is done.
We know that musculoskeletal disorders, and, in particular back and neck pain, are significant
contributors to this burden. It is imperative that we act collectively and collaboratively to address
spinal disorders and pain, to prevent the devastating impact it has at both personal and societal levels.
The authors would like to acknowledge Mr. Ngai Chow for his contribution to formatting the
manuscript and references.
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Hoy DG, Rickart KT, Durham J, Puntumetakul R, Mansoor GF, et al.
Working together to address disability in a culturally-appropriate and sustainable manner.
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President of British Pain Society is forced from office after refusing to denounce
NICE guidance on low back pain.
British Medical Journal 2009;339:b3049
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