Review Article | Open Access
Occupational Therapy’s Unique Contribution to Chronic Pain Management: A Scoping Review
Occupational therapy (OT) makes a unique contribution to chronic pain (CP) management due to its overarching focus on occupation. The aim of this scoping review was to describe current knowledge about this contribution by documenting OT roles, models, assessments, and intervention methods used with adults living with CP. A systematic search exploring 10 databases and gray literature from 2006 to 2017 was conducted. Fifty-two sources were retained and analysed. Results bring forward the main role of OT being improving activities and participation (76.9 %), the Canadian Model of Occupational Performance (9.6 %), and the Canadian Occupational Performance Measure (21.2 %). Within the 30 reported interventions, 73.3% related directly to the person, 20% pertained to occupation (activities and participation), and 6.7% addressed environmental factors. The distinction and complementarity between the bottom-up and the top-down approaches to OT intervention were discussed. This review highlights OT specificity in adult CP management.
The World Health Organization (WHO) recognizes chronic pain (CP) as a public health problem throughout the world. More than a symptom, CP is recognized as a disease in the International Classification of Diseases . A recent systematic review estimated that the prevalence of CP worldwide was 30.3% for the global population . The experience of pain interferes with different aspects of an individual's life , limiting their involvement in activities of daily living and their health-related quality of life . Reid et al.  reported in a systematic review that interference with functioning and well-being are significantly associated with increasing pain severity (). In fact, according to the International Association for the Study of Pain (IASP), one-third of people suffering from CP are unable or less able to maintain an independent and meaningful lifestyle due to their pain .
Being involved in meaningful life situations is a determinant of health and well-being and is itself an effective therapy . According to these authors, occupation is everything people do to occupy themselves, including looking after themselves (self-care), enjoying life (leisure), and contributing to the social and economic fabric of their communities (productivity). Actually, the various definitions of occupation show some similarities with the concept of participation [7, 8] which refer more broadly to activities essential to survival as well as activities and roles necessary for well-being . Furthermore, the International Classification of Functioning, Disability, and Health (ICF)  provides a common and shared understanding of functioning as well as a language that is multidisciplinary  and uses “disability” as an umbrella term which includes impairments (in body structures and functions), activity limitations, and participation restrictions . Through their overarching focus on occupational performance and occupational engagement, occupational therapists make a unique contribution to pain prevention and management programs .
Enabling occupation is the ultimate goal of the OT clinical process. Occupational therapists provide a wide range of pain management interventions across the domains of physical, emotional, and spiritual occupational performance and have the knowledge, skills, and expertise to address CP management in all its complexity at individual clients and community and policy levels . Occupational therapists’ core skill, analyzing and adapting the physical, emotional, cognitive, and social demands of activities and occupations, allows them to identify and intervene on barriers to participate in specific life situations while considering environmental and personal factors [12–15].
Moreover, studies which describe the OT approach provide a deep understanding of the links between CP and occupation [16, 17] and suggest that engaging in occupation has the potential to mediate the pain experience and to alter biological, psychological, and social factors that are known to influence the pain experience [18, 19]. In addition to addressing the disruptions in occupational performance caused by CP [19, 20], occupational therapists are concerned with the occupational identity [12, 21] of their client. The Model of Human Occupation  states that “occupational identity” constitutes the values, beliefs, roles, and interests which drive a person to perform daily activities . Indeed, occupational therapists recognize that CP affects all areas of a client’s life and their competency and identity, and they are trained to use a holistic approach to address the occupational needs of clients living with this problem [12, 13, 21].
In spite of OTs theoretical foundations, many occupational therapists face challenges in defining and deploying their role in CP management. There appears to be a lack of a clear understanding by health professionals regarding the contribution of OT services with CP clients [18, 20]. Of further concern is the findings of Robinson et al.  who noticed and warned that occupational therapists tend to use inappropriate evidence in working with people with CP and rely too much on evidence developed in other disciplines such as psychology. For instance, they report that occupational therapists have added mindfulness-based approaches to their practice without critically addressing the contribution of this approach in enabling occupational performance and ultimately participation in life situations. Skjutar et al.  conclude that two actions are necessary to ensure the growth and development of OT services for clients with CP: (i) researchers must develop evidence of effectiveness on occupation-based outcomes and (ii) clinicians need to develop expertise in evidence-based practice.
More recently, Hesselstrand et al.  published a systematic review that assessed the quality of studies describing and evaluating the effects of OT intervention in adults experiencing CP. The main clinical recommendations arising from this review were that (i) OT interventions should start from the identified needs of the client with CP, (ii) no support exists for the effectiveness of electromyographic biofeedback training as a supplement, and (iii) efficacy of instructions on body mechanics was significant during work-hardening treatment. These recommendations can be misleading to health professionals as they are not specific to OT outcomes in CP which should endorse occupational engagement and participation.
To our knowledge, besides Hesselstrand et al. , no recent comprehensive review of OT practice in CP management is published. The purpose of the present review was to provide an overview of the current state of knowledge about the OT roles, models, assessments, and interventions methods used with adults living with CP.
Research in the field of rehabilitation tends to involve diverse methodological approaches and relies on both quantitative and qualitative data . This heterogeneity and the widely dispersed publication of rehabilitation evidences pose substantial challenges for knowledge synthesis in rehabilitation . A scoping review is a specific type of literature review involving rigorous and transparent methods for data collection, analysis, and interpretation . This structured approach suits various research questions and facilitates gathering information from different sources, such as scientific literature and gray literature, as well as different study designs [26, 27]. Furthermore, scoping reviews aim to examine broad knowledge areas in order to identify gaps in the available scientific evidences; clarify key concepts; and report on relevant studies addressing and informing practice on a topic area . Considering the need for a better understanding of the state of knowledge about OT for CP management in adults, a scoping review in the literature published between 2006 and 2017 was conducted according to the Arksey and O’Malley’s framework  enhanced by the work of Levac et al. .
According to these authors, stage 1 involves identifying the research question. For this study, the main question was, “What is the current state of knowledge about OT for CP management in adults?” Three underlying questions based on the scientific literature contributed to documenting the OT process: (i) “What is the role of an occupational therapist for CP management in adults?” (ii) “Which assessment methods are available for use by the occupational therapist in CP management in adults?” (iii) “Which interventions support the OT intervention in CP management in adults?” The Canadian Practice Process Framework (CPPF)  formed the conceptual foundation for reporting the results.
Stage 2 involves identifying relevant studies. The scientific literature was searched through the following databases: Academic Search complete, CINAHL, Evidence-based medicine, Psychology and behavioral science collection, PsycINFO, PubMed, Scopus (MEDLINE and Embase), and OTseeker. The gray literature was searched through ProQuest for thesis and dissertations, and the Library University website was searched for books. Searching strategies were developed and adapted to the various databases as required in collaboration with an experienced librarian. The details of the search strategy used are given in Table 1.
Stages 3 and 4 involve an iterative team approach to selecting studies and charting data. To be included, articles had to meet all the following criteria: (i) document OT roles/assessments/interventions; (ii) focus on CP according to the WHO International Classification of Diseases (chronic primary pain, chronic posttraumatic and postsurgical pain, chronic neuropathic pain, chronic headache and orofacial pain, chronic visceral pain, and chronic musculoskeletal pain) ; (iii) address an adult population (18–65 years old); (iv) be published between 2006 and 2017; and (v) be written in English or French. Sources were excluded if they addressed cancer pain, hand therapy, and chronic diseases, and discussed only interdisciplinary or multidisciplinary approaches in CP management, without any specification about OT practice.
A total of 524 sources were identified through searching databases (53 from Academic Search complete, 60 from CINAHL, 12 from Evidence-based medicine, 9 from Psychology and behavioral science collection, 47 from PsycINFO, 94 from PubMed, and 243 from Scopus (MEDLINE and Embase, and 6 from OTseeker), and also 9 sources from potentially relevant gray literature were identified. Independently, two members of the research team (first and second authors) read each title/abstract and judged whether they were relevant to the research question and inclusion criteria or not. When a disagreement arose between the two reviewers, the third member of the research team (last author) offered additional consultation until a decision was reached. If the relevance of a study was still unclear, then the full article was read. Thus, 92 of the 533 sources were retained for full-text review. All 92 sources were reviewed by one member of the research team (second author) and independently validated by one researcher (first author). Hence, the three authors agreed on removing 40 sources considered irrelevant for the purpose of the study. Consequently, 52 sources were retained for data extraction. Two reviewers (second and last authors) extracted relevant information from these 52 sources, which were subsequently validated by the first author (first author). A flowchart of the source selection process for each stage of the review is presented in Figure 1.
The review team developed a data extraction process by analyzing three studies to ensure the presence of all relevant information. Charting the results was an iterative process whereby the charting table was continually updated . This process leads to the addition of a category related to the models/conceptual frameworks used by the author(s). The final data chart included (i) author(s); (ii) year of publication; (iii) country of origin; (iv) type of publication; (v) aim/purpose; (vi) study population and sample size (if applicable); (vii) role of the occupational therapist; (viii) models/conceptual frameworks; (ix) OT assessment methods; and (x) OT interventions methods.
Stage 5 involves collating, summarizing, and reporting results. In the present case, qualitative thematic content analysis  was performed to describe OT practice for CP management in adults regarding roles, models/conceptual frameworks, assessment, and interventions methods. Frequency analysis was used to identify the number of sources and the characteristics related to the categories.
A total of 52 sources were included in this scoping review: 19 reviews, 13 empirical studies, 7 qualitative studies, 6 documents from the gray literature, 3 descriptive studies, 3 author opinions, and 1 mixed-method study. These sources originated in the USA (; 40.4%), Canada (; 15.4%), Sweden (; 11.5%), Spain (; 7.8%), Australia, France, Ireland, Germany, Netherlands ( for each of them; 3.8%), Belgium, Denmark, Swiss, and United Kingdom ( for each of them; 1.9%). Table 2 presents the synthesized results.
Note. ADL = activities of daily living; COPM = Canadian occupational performance measure; CP = chronic pain; CRPS = complex regional pain syndrome; FM = fibromyalgia; LBP = low back pain; OT = occupational therapy.
3.1. Occupational Therapy Roles
Occupational therapists in CP management suit different roles as shown in Table 3. They may be classified according to the ICF.
3.1.1. Activities and Participation
The most frequently reported OT role in CP management (; 76.9%) was to improve activities and participation and was distributed in the following way: enabling occupational engagement (; 38.5%) and occupational performance (; 28.8%), providing vocational rehabilitation (; 21.2%), promoting participation (n=5; 9.6%), promoting functional independence, mobility, and autonomy (; 9.6%), addressing occupational balance (; 7.7%), restoring occupational identity (; 3.8%), and limiting occupational injustice (; 1.9%).
3.1.2. Body Functions and Structures
Improving and restoring function (; 9.6%), as well as improving body mechanics and activity tolerance (; 3.8%), were mentioned as part of the OT role in CP management.
3.1.3. Environmental Factors
OT involvement in modifying the nonhuman environment and adopting an ergonomic approach (; 32.7%) and in enhancing social support (; 15.4%) for adults with CP was mentioned by some authors.
3.1.4. Personal Factors
Most of the sources pertained to general CP in adults (; 53.8%), followed by chronic low back pain (; 19.2%), fibromyalgia (; 11.5%), complex regional pain syndrome (; 9.6%), headaches (; 3.8%), and chronic shoulder pain (; 1.9%).
3.2. Occupational Therapy Models and Conceptual Frameworks
The models and conceptual frameworks reported are summarized in Table 4. In order to specifically address occupational issues linked to CP, the authors directed their attention towards disciplinary OT models of practice and practice frameworks. The ones that were mentioned the most where the Canadian Model of Occupational Performance (CMOP) (; 9.6%) and the Canadian Model of Occupational Performance and Engagement (CMOP-E) (; 1.9%). The CMOP specifies three core constructs of interest for the profession of OT (persons, environments, and occupations) and portrays occupational performance as the result of their dynamic interaction [11, 76]. To extend its occupation-based perspective, engagement was added as a conceptual advancement on the original model . Other models of practice are reported such as the Occupational Therapy Practice Framework: Domain and Process (; 13.5%). This practice framework provides a systematic method of combining a variety of theoretical conceptual practice models to address a client's issues more comprehensively and guides occupational therapists towards combining multiple theoretical models to address client occupational performance issues and in defending their clinical decisions effectively .
3.3. Occupational Therapy Assessments
Table 5 summarizes the main domains of assessment methods of occupational therapists in CP management. The most reported measurement tool was the Canadian Occupational Performance Measure (COPM) (; 21.2%). Other evidence-based outcome assessments included the Occupational Performance History Interview (OPHI-II) (; 5.8%) and the Assessment of Pain and Occupational Performance (POP) (; 3.8%). The following assessment methods were mentioned in only one source: the Functional Independence Measure (FIM) ; the Milliken Activities of Daily Living Scale (MAS) ; the Assessment of Motor and Process Skills (AMPS) ; the Assessment of Life Habits Questionnaire (LIFE-H) ; the Impact on Participation and Autonomy (IPA) ; and the Pain and Functional Performance Assessment (PFPA) .
3.4. Occupational Therapy Interventions
OT interventions in CP management were classified according to the intervention taxonomy developed by McColl and Law  which categorises eight types of interventions used by occupational therapists to enable occupation as shown in Table 6.
3.4.1. Focus on Person
The most frequently reported interventions are related to body mechanics as well as posture and positioning (; 26.9%). Energy conservation and joint-sparing techniques (; 17.3%), relaxation training and stress management (; 15.4%), and exercises or fitness programs (; 13.5%) were also mentioned as interventions used in CP management. Moreover, six sources (; 11.5%) included mindfulness or cognitive behavioral therapy and behavioral approaches. Five sources (; 9.6%) involved one of the following categories: coping strategies; coordination, dexterity, and strengthening tasks; desensitization techniques; and sensory reeducation. Three sources (; 5.8%) presented one of the following categories: active movements and mobilization techniques; biofeedback; functional splinting; oedema modalities; and proprioceptive neuromuscular facilitation. Two sources (; 3.8%) suggested one of the following categories: thermal modalities; graded motor imagery; mirror visual feedback or stress loading. Finally, one source (; 1.9%) mentioned breathing techniques, electrical stimulation, massage and acupressure, and mental imagery and visualization.
3.4.2. Focus on Environment
The most frequently reported OT interventions addressing the environment related to ergonomics (; 30.8%) and 11 sources (; 21.2%) are mentioned environmental modification.
3.4.3. Focus on Occupation
Across all intervention categories, pacing and graded activity (; 36.5%) and activity (task) adaptation (; 32.7%) were the most frequently reported OT interventions. Vocational intervention (; 26.9%), reeducation, and sleep hygiene (; 5.8%) were also mentioned as occupation-focused OT interventions. Finally, two sources (; 3.8%) suggested one of the following categories: graded in vivo exposure, yoga, and Tai Chi.
In this scoping review, current knowledge about OT in CP management is described after collating and analyzing scientific literature and gray literature about the OT roles, models, assessments, and interventions methods. The results offer insight about OT practice specific to CP management.
The analysis suggests that occupational therapists mainly aim to improve activities and participation with adults living with CP. This aim is particularly consistent with the top-down approach which adopts a more global perspective of the client's participation in his or her living contexts while considering what is important and relevant to him or her . This aim is aligned with the “participation” level of the ICF  and intimately connects to the evidence-based relationship between occupation and health as well as fundamental assumptions in OT regarding how occupations influence people's health and vice-versa [10, 83]. By primarily identifying participation restrictions and understanding their causes, the top-down approach leads to a participation-oriented intervention which can provide CP clients with the support needed for involvement in their daily activities despite pain and physical impairments, such as a lack of strength or insufficient range of motion.
Whereas a biomedical model of health encourages a technique-oriented practice, an occupation-based practice emphasizes the use of occupation to address the occupational consequences of CP. Our findings show that improving and restoring function as well as improving body mechanics and activity tolerance is part of the aims of occupational therapists in CP management (see Table 3; body functions and structures). An understanding of whether occupational therapists’ specificity emerges here while the bottom-up approach to OT interventions is put forward is particularly pressing. Indeed, in 2011, Robinson et al.  warned the scientific community that the influence of the biomedical model of health on OT limited the integration of occupation-based practice for people with CP, the latter being the central value of OT. More recently, Burley et al.  also witnessed two competing perspectives, biomechanical and occupational, that are present in OT services in the hand therapy literature. They noticed that whilst there has been some integration of an occupational perspective, a bottom-up approach, an inconsistent use of terminology to describe what could be framed as occupations, and a lack of an occupation-based performance perspective persist throughout the OT clinical process. Although this population is not included in this study, these findings demonstrate the continuing tensions between the biomechanical approach and an occupational perspective that can be experienced in the OT profession. Therefore, the best practice requires that occupational therapists thoughtfully elaborate their clinical process without neglecting the purpose and focus of OT, enabling occupation.
The interactions between CP and occupation are complex and go well beyond work since personal care, sleep, and family life may also be affected. This is the rational supporting the notion that the complexity of the interactions between all domains of occupation be considered when occupational therapists intervene . Complementary to the biopsychosocial (model or approach), occupation-focused models such as the CMOP/CMOP-E support a holistic understanding and guide the intervention towards the occupational challenges that adults living with CP face . Moreover, by identifying occupational engagement as an important aspect of human occupation, the CMOP/CMOP-E aligns with the current developments and improvements in knowledge related to occupation-based, client-centered and evidence-based OT practice . Occupational engagement considers meaning, interest, motivation, and/or perceived self-efficacy as criteria necessary for a client-centered practice  all of which are of particular interest in the context of CP. The way in which individuals with CP engage in their daily activities has been shown to impact on daily functioning. Indeed, a growing body of OT research has begun to explore the complexity of the occupational experiences of people living with CP [65, 86] as well as its impact on quality of life . In fact, the relationship between the levels of engagement in occupations and pain experience has been explored [16, 17]. It has been found that both avoidance of activities and overactivity are associated with more pain, higher levels of physical disability, and poorer psychological functioning .
In sum, evidence exists to support the need for OT as an intervention which explicitly endorses an occupation-based perspective. By considering the occupational aspect of living with CP, occupational therapists strengthen and differentiate their role thereby affirming OT specificity within a multidisciplinary team .
4.3. Assessment Methods
Historically, bottom-up assessments are frequently used in OT practice and fit within the biomedical model . The approach of using standardized tests and emphasizing physical impairments and disabilities and subsequently inferring their influence on participation restriction may be conducive to communication and may enable a transdisciplinary approach to intervention. However, it is flawed reasoning. Indeed, widespread clinical belief that improvement in body structures and functions reduces activity limitations and participation restrictions has not been convincingly demonstrated in the literature . This scoping review has exposed the challenges of distinguishing the concepts of “activities” and “participation” described in the ICF model. Unfortunately, these concepts are often combined and confounded in contrast with those of body structures and function . For example, questionnaires are typically used to measure the perception of physical functioning in the presence of pain  and not the true level of participation. It is important for researchers to keep in mind that participation, which is the concept most closely linked to the occupation-based perspective of OT, differs from activity. Participation refers to involvement in real life situations instead of the execution of a task or action , measuring participation can be a challenge but validated tools do exist such as the COPM and the OPHI-II  as presented in this review. Occupational therapists should therefore be leaders in implementing these tools in their practice with the adult CP population.
Occupational therapists can evaluate how pain influences the way an individual performs and engages in his daily occupations . However, another angle that should be assessed is how performance and engagement in daily occupations affect health and well-being in the presence of CP. Our findings show that the most frequently reported assessment method was the COPM. This evidence-based outcome measure is designed to detect change in the client's self-perception of performance and satisfaction in self-care, productivity, and leisure occupations over time  and has recently been used to the measure the efficacy of an interdisciplinary CP rehabilitation program . By combining different assessment methods such as activity analysis, occupational interviews, observations, and standardized functional tests, occupational therapists are skilled to observe and understand the interaction between multiple personal, environmental, and occupational factors that explain the gap between what a person living with CP wants and needs to do and their level of participation [35, 93].
4.4. Interventions Methods
On top of having tools and expertise to quantify and objectively measure occupational performance and engagement (functional performance), occupational therapists also are experts at restoring function through purposeful and meaningful occupations . This intervention was supported by this scoping review which exposed that of the 30 different OT interventions in CP management, seventy-three percent of them related directly to the person, 20% pertained to activities and participation, and 7% addressed environmental factors. Interestingly, the two most frequently discussed interventions refer to an occupation-based intervention: pacing and graded activity (36.5%) and activity (task) adaptation (32.7%).
People with CP show lifestyle and work-related issues which suggest a need for interventions which consider the complex relationships between the person, environment, and occupations . However, in the last few years, little research about the efficacy of OT interventions in CP management has been conducted despite explicit recommendations [11, 19]. Considering evidence that engagement in occupation is essential for health and well-being, new studies in the field of OT will enforce the unique contribution of occupational therapists to the management of CP. Occupation-based interventions do exist; for instance, Simon and Collins  recently suggested that a specific OT intervention optimizes participation in integrated occupations and could contribute to CP management. Also of interest, for CP adults, could be training in Lifestyle Redesign® which is a manualized OT intervention grounded in occupational science research. This training technique focuses on facilitating client development of healthy self-care routines and habits to prevent and manage chronic conditions. According to these authors, this manualized intervention has demonstrated significant changes in occupational performance and satisfaction scores, physical and social functioning, role limitations due to physical and emotional problems, energy and fatigue, general health, and pain self-efficacy in adult with CP. Other studies of this kind are essential to expose to the health professional community research known to scientifically support OT practice interventions reflecting OT specificity in CP management.
4.5. Future Implications
According to Cronin and Mandich , occupational therapists need to be fluent in both the bottom-up and the top-down approaches and understand their strengths and weaknesses within different clinical situations. The bottom-up and the top-down approach to evaluation and to intervention are complementary and prioritized according to the needs of the client and clinical setting and considering the client’s stage of rehabilitation and readiness to address specific types of problems ). However, occupational therapists should take warrant that the historic tendency to relying too much on the bottom-up approach might in some cases forego or at least reduce the OT impact on participation. To promote a better understanding of the centrality of occupation, when choosing either a top-down or bottom-up approach, occupational therapists should seek to explicitly link their intervention to long-term outcomes linked to occupational performance and engagement or participation. This is a crucial challenge for occupational therapists especially if a bottom-up approach is privileged. By relentlessly reminding health professionals that OT focus is on occupation as a mean and an end, the profession will continue to strongly position itself as a valuable and distinctive contribution to adult CP management.
4.6. Study Strengths and Limitations
In this study, we meticulously followed the first five steps recommended to conduct a scoping review and explored a variety of sources to ensure that the most relevant documents were included. Covalidation of data charting and analyses also ensured that interpretation of the findings was valid. However, the inclusion of stage six, although optional, would have made it possible to provide opportunities for consumer and stakeholder involvement to suggest additional references and provide insights beyond those in the literature . This has partly been addressed by a covalidation process that has been put in place within the research team and two collaborators. Also, despite an extensive search, some relevant documents may have been missed. Moreover, the quality of the publications included in this review was not critically appraised because this criterion is not one of the objectives of scoping reviews. Nonetheless, we are confident that the current study provides a clear picture of current knowledge and is a good starting point to orient future research and helps understanding and promoting OT in CP management knowing that the referral to an occupational therapist depends on other health care professionals’ knowledge and understanding about OT .
In this scoping review, four themes linked to the current state of knowledge about OT in CP management emerged: (i) as an expert in enabling occupation, occupational therapists are particularly interested in how individuals living with CP can perform and engage in their daily occupations, (ii) the use of disciplinary models ensures a better emphasis on occupation as an end and as a mean throughout the entire OT treatment process, (iii) the top-down approach which is more in line with OT specific values and skills is complementary to the bottom-up approach, and iv) further studies about occupation-based interventions and their effectiveness are required to better address occupational issues which are facing adults living with CP and enrich the entire OT practice process by bringing forward its specific contribution to the optimization of the participation of people facing occupational challenges related to living with CP on a daily basis.
Conflicts of Interest
The authors declare they have no conflicts of interest.
The authors thank librarian Kathy Rose for her contribution to the development of the research strategy. The authors also thank Annie Rochette and Carmen Moliner for their time shared and sound advice. This study was funded by the Faculty of Medicine and Health Sciences, Université de Sherbrooke.
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