Sex-based differences in pain distribution in a cohort of patients with persistent post-traumatic neck pain

Objectives: To analyze a cohort of 745 consecutive patients referred to a regional specialist clinic for evaluation of post-traumatic neck pain during a five-year period.

Methods: A cross-sectional observational study of baseline assessments performed by multi-professional rehabilitation teams according to a standardized checklist.

Results: The cohort contained nearly twice as many females as males (64% versus 36%). The type of injury did not differ between sexes. Of the entire cohort, 38% were diagnosed with widespread pain, 50% with regional pain, and 12% with local pain. The pain distribution among the females was 43% widespread, 48% regional, and 9% local, and corresponding figures among males were 29%, 53%, and 18%. Longer time between trauma and assessment did not affect pain distribution among the men, but a tendency towards more widespread pain was observed among the women.

Discussion: The importance of "female sex" as risk factor for the development of persistent pain after neck trauma needs to be discussed further. The high frequency of regional and widespread pain among patients with persistent neck pain after trauma calls for both multidisciplinary assessments and treatment strategies. The relationships between different pain distribution patterns, disability, activity, and psychological factors need to be studied further.

• Implications for rehabilitation

• Patients suffering from pain and disability after neck trauma constitute a significant proportion of patients with persistent pain.

• The importance of the risk factor “female sex" should be further discussed in the development of persistent pain after neck trauma.

• The high frequency of regional and widespread pain among patients with persistent neck pain after trauma calls both for multidisciplinary assessments and treatment strategies.

• The relationships between different pain distribution patterns, disability, activity, and psychological factors need to be studied further.

     

Dutch version of the Fear of Pain Questionnaire for adolescents with chronic pain

Background: Fear of pain is important in the development and maintenance of chronic pain. The Fear of Pain Questionnaire-Child version has been developed to assess pain related fear in children and adolescents.

Objective: Translating the original questionnaire into Dutch, and investigating internal consistency and construct validity to enable use in the Dutch pain rehabilitation setting for treatment and research.

Methods: Cross-sectional validation study: After forward and back translation of the FOPQ-C, adolescents (11–22 years old) with chronic musculoskeletal pain completed an assessment containing the Dutch Fear of Pain Questionnaire, and questionnaires about demographics, pain catastrophizing, functional disability, and pain intensity. Internal consistency and construct validity were evaluated through exploratory factor analysis (principal axis factoring with oblique rotation) and hypotheses testing using pain catastrophizing, functional disability, and pain intensity as comparative constructs.

Results: Eighty-six adolescents completed the assessment. Exploratory factor analysis resulted in a two-factor structure, explaining 43% of the variance. Internal consistency was strong (Cronbach’s α?=?0.92 total scale, α?=?0.88 factor 1, and α?=?.86 factor 2). Five out of 6 hypotheses were confirmed.

Conclusions: The Dutch version demonstrated good internal consistency and good construct validity in a population of adolescents with chronic musculoskeletal pain.

• Implications for rehabilitation

• The Fear of Pain Questionnaire-Child version was developed to measure fear of pain and avoidance in children and adolescents with chronic pain.

• Identification of fear of pain and activities that are being avoided are important during screening and assessment of the adolescent for chronic pain rehabilitation treatment.

• The presence of fear of pain and/or avoidance behavior is important information to shape and target multidisciplinary rehabilitation treatment.

     

Greek cultural adaption and validation of the Kujala anterior knee pain scale in patients with patellofemoral pain syndrome

Purpose: To cross-culturally adapt and validate the Greek version of the Kujala anterior knee pain scale (KAKPS). Methods: The Greek KAKPS was translated from the original English version following standard forward and backward translation procedures. The survey was then conducted in clinical settings by a questionnaire comprising the Greek KAKPS and patellofemoral pain syndrome (PFPS) severity scale. A total of 130 (62 women and 68 men) Greek-reading patients between 18 and 45 years old with anterior knee pain (AKP) for at least four weeks were recruited from physical therapy clinics. To establish test–retest reliability, the patients were asked to complete the KAKPS at initial visit and 2–3 days after the initial visit. The Greek version of the PFPS severity scale was also administered once at initial visit. Internal consistency of the translated instrument was measured using Cronbach’s α. An intraclass correlation coefficient was used to assess the test–retest reliability of the KAKPS. Concurrent validity was measured by correlating the KAKPS with the PFPS severity scale using Pearson’s correlation coefficient. Results: The results showed that the Greek KAKPS has good internal consistency (Cronbach’s α?=?0.942), test–retest reliability (ICC?=?0.921) and concurrent validity (r?>?0.7). Conclusions: This study has shown that the Greek KAKPS has good internal consistency, test–retest reliability and concurrent validity when correlated with the PFPS severity scale in adult patients with AKP for at least four weeks.

• Implications for rehabilitation

• The Greek version of the KAKPS has been found to be reliable and valid when used in adult patients with AKP for at least four weeks.

• The results of the psychometric characteristics were compatible with those of the original English version.

• The KAKPS could be applied in a Greek-speaking population to assess functional limitations and symptoms in patients aged 18–45 years old with AKP for at least four weeks.

     

Predictors of multidisciplinary treatment outcome in patients with chronic musculoskeletal pain

Abstract

Purpose: The present study aimed to identify predictors of rehabilitation outcome for patients with chronic musculoskeletal pain (CMP) and psychological problems. Methods: A retrospective cohort study including 230 adult patients with CMP admitted for multidisciplinary pain rehabilitation. Potential predictors were patient characteristics, duration of complaints, baseline functioning, pain, personality, coping style, fear of movement, psychological distress and type of treatment. Outcome measures were physical functioning, mental health, pain and patient-reported effect. Multiple (logistic) regression models were used to identify predictors. Results: Patients who were more disabled and patients with more pain benefitted more from the rehabilitation treatment than less disabled patients or those with less pain. Age, work status, vitality, depression and coping style also predicted outcomes significantly. The models explained between 27 and 80% of the outcomes. There was an interaction between type of treatment, work status and the baseline pain score as regards the outcome in terms of pain. Conclusions: No strong predictors of treatment outcome were found other than the baseline scores of the respective outcome variables. More disabled patients and patients with more pain benefitted more from the rehabilitation program. Other predictors improved the prediction models slightly.

• Implications for Rehabilitation

• It remains challenging to correctly predict the outcome of treatment from patients’ baseline sociodemographic and psychological characteristics; predictors other than baseline scores of the outcome variables are only slightly associated with treatment outcome.

• Patients with chronic musculoskeletal pain and poor physical functioning or mental health benefit most from pain rehabilitation.

• Older patients benefit less from a pain rehabilitation program than younger patients in terms of physical functioning.

• Pain reduction during a pain rehabilitation program is greatest in patients with high pain intensity who are not at work at the start of the rehabilitation program.

• Coping style influences the outcome of rehabilitation of patients with chronic musculoskeletal pain.

     

The processes underpinning reductions in disability among people with chronic neck pain. A preliminary comparison between two distinct types of physiotherapy intervention

Purpose: To establish whether different processes underpin changes in disability in people with neck pain who underwent two types of active physiotherapy intervention.

Materials and methods: This study was a sub-analysis of a randomized controlled trial assessing whether the addition of Interactive Behavioral Modification Therapy (a cognitively informed physiotherapy treatment) to a Progressive Neck Exercise Program improved outcome in patients with chronic neck pain. Regression analyses were performed to determine the extent to which demographics, changes in pain, and changes in certain cognitive factors were related to changes in disability.

Results: In the progressive neck exercise group, changes in levels of pain intensity were the only factor significantly related to change in disability, explaining 33% of the variance. In the interactive behavioral modification therapy group, changes in pain intensity, and catastrophizing together explained 54% of the variance in change in disability. Only changes in catastrophizing displayed a significant β value in the final model.

Conclusions: Different processes appear to underpin changes in disability in patients undergoing cognitively informed physiotherapy to those undergoing a primarily exercise-based approach.

• Implications for rehabilitation

• Certain cognitive factors are known to be related to levels of disability in patients with chronic neck pain

• Specifically targeting these factors results in more patients making a clinically meaningful reduction in disability

• Different processes appear to underpin reductions in disability when people with neck pain are treated with cognitively informed physiotherapy to when treated with exercise alone, which may account for why more patients improve when treated in this manner.

• Reductions in catastrophizing appear to be particularly important and efforts should be made to assess and treat catastrophic thoughts in people with chronic neck pain.

     

Reduction of cervical and respiratory muscle strength in patients with chronic nonspecific neck pain and having moderate to severe disability

Purpose: To investigate whether patients with chronic nonspecific neck pain and having moderate to severe disability have a greater cervical motor function impairment and respiratory disturbances compared with patients with chronic nonspecific neck pain having mild disability and asymptomatic subjects; and the association between these outcomes in patients with chronic nonspecific neck pain and healthy controls.

Methods: Cross-sectional study, 44 patients with chronic nonspecific neck pain and 31 healthy subjects participated. The neck disability index was used to divide the patients into 2 groups: 1) mild disability group (scores between 5 and 14 points); and 2) moderate to severe disability group (scores?>14 points). Cervical motor function was measured by cervical range of motion, forward head posture, neck flexor, and extensor muscle strength. Respiratory function and maximum respiratory pressures were also measured.

Results: Statistically differences were found between the patients with chronic nonspecific neck pain having a moderate to severe disability and the asymptomatic subjects for cervical and respiratory muscle strength. Comparisons between chronic nonspecific neck pain and the asymptomatic groups showed differences for all the variables, except for forward head posture. The regression model determined that strength of cervical flexion explained 36.4 and 45.6% of the variance of maximum inspiratory pressures and maximum expiratory pressures, respectively.

Conclusions: Only the chronic nonspecific neck pain group with moderate to severe disability showed differences compared with the healthy subjects. Neck muscle strength could be a good predictor of respiratory muscle function.

• Implications for rehabilitation

• Neck pain severity could be closely associated with decreased respiratory pressure in patients with chronic nonspecific neck pain.

• These findings suggest a new therapeutic approach for patients with moderate to severe disability, such as respiratory muscle training.

• The regression models show that a simple measurement of neck muscle strength could provide a reasonably accurate prediction for the respiratory function of these patients. Hence, this could provide an easy tool to assess respiratory function to physiotherapists without the need for sophisticated instrumentation.

     

Defining mild,moderate, and severe pain in young people with physical disabilities

Purpose: The purpose of this study is to identify the cutoffs that are most suitable for classifying average and worst pain intensity as being mild, moderate, or severe in young people with physical disabilities.

Method: Survey study using a convenience sample of 113 young people (mean age?=?14.19; SD?=?2.9; age range: 8–20) with physical disabilities (namely, spinal cord injury, cerebral palsy, spina bifida, limb deficiency (acquired or congenital), or neuromuscular disease).

Results: The findings support a non-linear association between pain intensity and pain interference. In addition, the optimal cutoffs for classifying average and worst pain as mild, moderate, or severe differed. For average pain, the best cutoffs were the following: 0–3 for mild, 4–6 for moderate, and 7–10 for severe pain, whereas the optimal classification for worst pain was 0–4 for mild, 5–6 for moderate, and 7–10 for severe pain.

Conclusions: The findings provide important information that may be used to help make decisions regarding pain treatment in young people with disabilities and also highlight the need to use different cutoffs for classifying pain intensity in young people with disabilities than those that have been suggested for adults with chronic pain.

• Implications for rehabilitation

• Most clinical guidelines make treatment recommendations based on classifications of pain intensity as being mild, moderate, and severe that do not have a clear cut association with pain intensity ratings.

• Cutoffs that are deemed to be the most appropriate for classifying pain intensity as mild, moderate, and severe appear to depend, at least in part, on the pain population that is being studied and pain domain that is being used.

• This work helps to advance our knowledge regarding the meaning of pain intensity ratings in young people with physical disabilities.

• Clinicians can use this information to make empirically guided decisions regarding when to intervene in young people with disabilities and chronic pain.

     

Psychometric evidence of self-reported questionnaires for patellofemoral pain syndrome: a systematic review

Abstract

Purpose: To conduct a systematic review of psychometric properties of self-reported questionnaires used to assess the level of symptoms and disability in individuals with patellofemoral pain syndrome (PFPS). Methods: A structured search was conducted in four databases (Medline, Embase, CINAHL, SportDiscus). A total of 24 studies about five different self-reported questionnaires were analyzed. A pair of independent raters extracted data on validity, reliability and responsiveness to change, and performed critical appraisal (0–100%). Results: Activities of Daily Living Scale (ADLS), Anterior Knee Pain Scale (AKPS), International Knee Documentation Committee (IKDC) and Lysholm Scale (LS) present excellent test–retest reliability (weighted average intraclass correlation coefficients [ICC]?>?0.80), whereas Functional Index Questionnaire (FIQ) is moderately reliable (ICC?=?0.61). Minimal detectable change is 8.3% for ADLS, 9.0% for AKPS, 19% for FIQ, 8.5% for IKDC and 30% for LS. ADLS, AKPS, IKDC and LS are highly responsive (effect size/standardized response mean >0.95) in individuals with PFPS, while FIQ is lowly responsive (effect size?=?0.49). Conclusion: Based on available evidence, ADLS presents the best psychometric properties and should be preferred when evaluating patients with PFPS. AKPS and IKDC are also adequate, while FIQ and LS are not recommended for individuals with PFPS.

• Implications for Rehabilitation

• While several questionnaires have been developed to assess symptoms and functional limitations caused by knee pain, their psychometric properties can vary depending on the condition presented by the patient.

• The Activities of Daily Living Scale of the Knee Outcome Survey should be preferred by clinicians when evaluating a patient with PFPS.

• The Anterior Knee Pain Scale and International Knee Documentation Committee Subjective knee evaluation are also adequate for use with this population.

• The Functional Index Questionnaire and Lysholm Scale are not recommended for PFPS.

     

Self-rated disability,fear-avoidance beliefs,nonorganic pain behaviors are important mediators of ranges of active motion in chronic whiplash patients

Abstract

Purpose: The influence of self-rated disability and fear-avoidance beliefs on whiplash sufferers in their performance of active ranges of motion has not been studied well. We undertook a cross-sectional study to determine this. Methods: Chronic whiplash subjects completed a standard clinical examination. They completed the Neck Disability Index (NDI), the Tampa Scale for Kinesiophobia (TSK) and pain visual analog scale (VAS). Active ranges of motion (goniometer) and cervical nonorganic simulation signs (C-NOSS) were obtained by the examiner. Univariate and multivariable analyses were conducted on these scores. Results: Sixty-four subjects (37 female) with a mean age of 41.4 (SD 16.1) years completed all scores. NDI, pain VAS and C-NOSS correlated significantly with ROM. In a multivariable model, only the NDI score contributed significantly to the variance of the ROM scores (14%). Conclusion: As chronic whiplash sufferers perform ROM in a clinical examination, these ranges are importantly influenced by their self-perceived disability. Cervical nonorganic simulation signs can be helpful in distinguishing high from very high levels of disability and motion restriction. The lack of correlation with the TSK may present a challenge to the Fear Avoidance Model in whiplash.

• Implications for Rehabilitation

• Self-ratings of disability in chronic whiplash sufferers are influenced by their fear-avoidance beliefs.

• While self-ratings of disability are known to predict chronicity of whiplash, there is less known about how these ratings affect impairment assessment during recovery.

• This study shows that self-ratings of disability influence the presentation of impairment by chronic whiplash sufferers with respect to their ranges of neck motion.

• Signs of nonorganic behavior also influence ranges of motion and self-ratings of disability.

• These findings should be incorporated into the interpretation of impairment findings in chronic whiplash sufferers in order to improve management.

     

Comorbid insomnia in patients with chronic pain: a study based on the Swedish quality registry for pain rehabilitation (SQRP)

Abstract

Purpose: This study investigates the prevalence of insomnia and its relationship to other symptoms and health aspects in patients with chronic pain. Methods: Patients with chronic pain conditions (n?=?845) referred to a multidisciplinary pain centre completed surveys provided by the Swedish quality registry for pain rehabilitation (SQRP). The SQRP collects data on socio-demographics, health status, symptoms of pain, mood and insomnia and life satisfaction. Results: The majority of patients (65.3%) had clinical insomnia according to the insomnia severity index (ISI). Insomnia correlated significantly but weakly with pain, depression, anxiety and coping; the strongest multivariate correlations were found with depression and anxiety followed by pain interference and pain severity. Pain intensity, depression and anxiety correlated stronger than ISI with respect to the two investigated aspects of health. Conclusions: The prevalence of insomnia is high in patients with chronic pain conditions, but the level of importance in relation to other symptoms for health aspects is low, and the associations with other important symptoms are relatively weak. One way to increase the effects of multimodal rehabilitation programs may be to provide interventions directed specifically at insomnia rather than focusing only on interventions that address pain, depression and anxiety.

• Implications for Rehabilitation

• The prevalence of insomnia is high in patients with complex chronic pain conditions.

• Relatively low correlations existed between insomnia and pain intensity, depression, anxiety and other psychological aspects.

• Pain intensity, anxiety and depression were more important for perceived health aspects than insomnia.

• One way to increase the effects of multimodal rehabilitation programs may be to also include interventions directed directly to insomnia.

     

Chinese translation and validation of the Kujala scale for patients with patellofemoral pain

Purpose: This study translated and validated the Kujala scale, a well-documented questionnaire for patients with patellofemoral pain, into Chinese version. Method: Chinese Kujala scale was translated from the original English version following the recommendations of the International Society for Pharmacoeconomics and Outcomes Research. Sixty four Chinese reading patients who are diagnosed of patellofemoral pain were recruited from multiple hospitals and physiotherapy clinics. Psychometric property was evaluated in terms of test-retest reliability and internal consistency. Convergent validity was examined by Spearman rank correlation coefficient tests by comparing its score with the validated Chinese version of WOMAC Osteoarthritis Index and SF-36. Results: Chinese Kujala scale demonstrated excellent reliability (ICC?=?0.968, p?<?0.001). Cronbach’s α of individual questions and its overall value were above 0.7. Strong correlation was found between the Chinese Kujala scale and the WOMAC Osteoarthritis Index (rho?=??0.708, p?<?0.001). Fairly weak correlations were also found between Chinese Kujala scale with the “physical” (rho?=?0.413–0.498, p?<?0.001) and “energy vitality” (rho?=?0.290, p?=?0.02) domains of SF-36. However, the relationship between the “bodily pain” was not significant (rho?=?0.136, p?=?0.284). Conclusion: The Chinese translated version of Kujala scale is a reliable and valid instrument for assessing the patellofemoral pain associated functional disturbances among the patient cohort.

Implications for Rehabilitation

• The Chinese translated version of Kujala scale is a reliable and valid instrument for assessing the functional disturbances associated with patellofemoral pain among the patient cohort.

• This instrument facilitates research among Chinese population and multinational studies.

     

The psychometric properties of an Arabic numeric pain rating scale for measuring osteoarthritis knee pain

Purpose: The aims of this study were to translate the numeric rating scale (NRS) into Arabic and to evaluate the test–retest reliability and convergent validity of an Arabic Numeric Pain Rating Scale (ANPRS) for measuring pain in osteoarthritis (OA) of the knee.

Methods: The English version of the NRS was translated into Arabic as per the translation process guidelines for patient-rated outcome scales. One hundred twenty-one consecutive patients with OA of the knee who had experienced pain for more than 6 months were asked to report their pain levels on the ANPRS, visual analogue scale (VAS), and verbal rating scale (VRS). A second assessment was performed 48 h after the first to assess test–retest reliability. The test–retest reliability was calculated using the intraclass correlation coefficient (ICC_2,1). The convergent validity was assessed using Spearman rank correlation coefficient. In addition, the minimum detectable change (MDC) and standard error of measurement (SEM) were also assessed.

Results: The repeatability of ANPRS was good to excellent (ICC 0.89). The SEM and MDC were 0.71 and 1.96, respectively. Significant correlations were found with the VAS and VRS scores (p?<0.01).

Conclusions: The Arabic numeric pain rating scale is a valid and reliable scale for measuring pain levels in OA of the knee.

• Implications for Rehabilitation

• The Arabic Numeric Pain Rating Scale (ANPRS) is a reliable and valid instrument for measuring pain in osteoarthritis (OA) of the knee, with psychometric properties in agreement with other widely used scales.

• The ANPRS is well correlated with the VAS and NRS scores in patients with OA of the knee.

• The ANPRS appears to measure pain intensity similar to the VAS, NRS, and VRS and may provide additional advantages to Arab populations, as Arabic numbers are easily understood by this population.

     

The relation of social support and depression in patients with chronic low back pain

Purpose: Depression is a common condition in adults with low back pain (LBP), and is associated with poorer patient outcomes. Social support is a modifiable factor that may influence depressive symptoms in people with LBP and, if so, could be a consideration in LBP management when depression is an issue. The aim of this study was to examine social support as a prognostic factor for depressive symptoms and recovery from depression in patients with LBP.

Method: Patients with LBP (n?=?483), recruited from four imaging centers in Canada, completed an initial survey following imaging and a follow-up survey one year later, including the Medical Outcomes Study (MOS) Social Support Survey and the Center for Epidemiologic Studies Depression Scale. Multivariable regression analyses were used to examine the relationship between social support and depression.

Results: More social support (overall functional social support) at baseline was associated with recovery from depression (OR?=?0.24; 95% CI 0.10, 0.55) and less depressive symptoms (β?=?1.68; 95% CI?=?0.36, 3.00) at one-year follow-up. In addition, associations were found between specific aspects (subscales) of social support and the two depression outcomes.

Conclusions: Functional social support as a prognostic factor for depression and possible target of LBP management warrants further investigation.

• Implications for Rehabilitation

• Depression is a common condition in adults with low back pain (LBP), and is associated with poorer patient outcomes.

• This study provides evidence for social support as a prognostic factor for depressive symptoms and recovery from depression in patients with LBP problems.

• Management of pain conditions may be enhanced by a better understanding of modifiable risk factors for depression, such as social support.

     

Long-lasting improvements in health-related quality of life among women with chronic pain,following multidisciplinary rehabilitation

Purpose: To determine whether observed health-related quality-of-life improvements after four-week traditional multidisciplinary pain management program and additional neuroscience education and mindfulness-based cognitive therapy for chronic pain are sustained at six-month follow-up.

Method: This observational longitudinal follow-up study, with complete follow-up of 75 women, 61.5% of initial traditional approach group (treated 2001–2005) and 56 (62.2%) receiving the new approach (treated 2006–2009). Pain intensity and quality of life were measured at baseline and six months after interventions. Analysis of variance (ANOVA) and paired samples t-tests were used for statistical analysis.

Results: Both groups showed sustained improvements in pain intensity (traditional approach?=??10.6 [p?<?0.001]; new approach?=??14.5 [p?p?p?p?=?0.066]), whereas all other domains among both groups were sustained. Significant decline was observed from discharge to six month among both groups with the exception of the sleep domain among the traditional approach group, pain intensity among the new approach and financial status among both groups. No baseline differences were revealed between responders and nonresponders.

Conclusions: Multidisciplinary interventions for women with chronic pain conditions improved quality of life and pain intensity with lasting improvements observed half a year after treatment completion.

• Implications for rehabilitation

• Intensive multidisciplinary biopsychosocial rehabilitation is essential for chronic pain conditions.

• This follow-up study shows sustained improvement in health-related quality of life and pain intensity six months after such rehabilitation was completed.

• Emphasizing mindfulness-based cognitive therapy and neuroscience patient education may contribute to less decline in pain intensity from discharge to six-month follow-up compared with a more traditional approach.

     

No association between level of vitamin D and chronic low back pain in Swedish primary care: a cross-sectional case-control study

Objective: Assessment of vitamin D levels and deficiency status in individuals with chronic low back pain (CLBP) in a Swedish general population, compared with controls matched for sex and age.

Design: Cross-sectional case-control study.

Setting: Primary care, southern Sweden.

Subjects: Participants (n?=?44) with self-reported low back pain for at least 3 months and individually sex- and age-matched controls without a chronic pain condition (n?=?44), recruited from the general population by random letter of invitation.

Main outcome measure: Association between vitamin D level and CLBP when adjusting for possible confounders in a multivariate forward conditional logistic regression model.

Results: Mean S-25-hydroxyvitamin D levels were 81 and 80?nmol/L in the CLBP and control group, respectively. The prevalence of vitamin D deficiency was low and similar in the CLBP group and the control group. Vitamin D level was not associated with CLBP when potential confounders were taken into account.

Conclusions: No difference in vitamin D levels between participants with CLBP and matched controls could be demonstrated in the present sample. Assessment of vitamin D level and deficiency status may be of questionable value in the management of CLBP in primary care settings at similar latitudes, unless there are additional risk factors for deficiency or specific indicators of osteomalacia.

• Key Points

• Vitamin D deficiency is common and reported in many chronic pain conditions, including chronic low back pain (CLBP), but evidence for an association and causality is insufficient.

• The present study found no association between vitamin D levels and CLBP in a case-control sample of 44?+?44 individuals from the Swedish general population.

• Prevalence of vitamin D deficiency was low and comparable in individuals with CLBP and controls without chronic pain, matched for sex and age.

• Assessment of vitamin D status, for the purpose of finding and treating an underlying cause of pain, may be of limited value in the management of CLBP in primary care settings at similar latitudes.

     

Health-related quality of life improvements among women with chronic pain: comparison of two multidisciplinary interventions

Purpose: To measure the effect of 4 weeks traditional multidisciplinary pain management program (TMP) versus neuroscience education and mindfulness-based cognitive therapy (NEM) on quality of life (HRQL) among women with chronic pain. Method: This observational longitudinal cohort study conducted in an Icelandic rehabilitation centre included 122 women who received TMP, 90 receiving NEM, and 57 waiting list controls. Pain intensity (visual analogue scale) and HRQL (Icelandic Quality of Life scale) were measured before and after interventions. ANOVA and linear regression were used for comparisons. Results: Compared with controls we observed statistically significant changes in pain intensity (p?p?p?=?0.008). Head to head comparison between study groups revealed that pain intensity improved more among TMP participants (21.8 versus 17.2?mm; p?=?0.013 adjusted). Women with low HRQL at baseline improved more than those with higher HRQL (mean TMP?=?13.4; NEM?=?12.9 if HRQL?≤?35 versus mean TMP?=?6.6 and NEM?=?7.8 if HQRL?>?35). Conclusions: Our non-randomized study suggests that both NEM and TMP programs improve pain and HRQL among women with chronic pain. Sleep quality showed more improvements in NEM while pain intensity in TMP. Longer-term follow-ups are needed to address whether improvements sustain.

• Implications for Rehabilitation

• Chronic pain is a debilitating condition affecting quality of life and restricting societal participation.

• Intensive multidisciplinary bio-psycho-social rehabilitation is essential for this patient group.

• This study shows improvement in health-related quality of life and pain intensity following such rehabilitation.

• Emphasizing mindfulness based cognitive therapy and neuroscience patient education improves sleep to more extend than more traditional approach.

     

Psychometric properties of the neck disability index amongst patients with chronic neck pain using item response theory

Objective: The Neck Disability Index (NDI) is commonly used for clinical and research assessment for chronic neck pain, yet the original version of this tool has not undergone significant validity testing, and in particular, there has been minimal assessment using Item Response Theory. The goal of the present study was to investigate the psychometric properties of the original version of the NDI in a large sample of individuals with chronic neck pain by defining its internal consistency, construct structure and validity, and its ability to discriminate between different degrees of functional limitation.

Methods: This is a cross-sectional cohort study of 585 consecutive patients with chronic neck pain seen in a university hospital rehabilitation clinic. Internal consistency was evaluated using Cronbach’s alpha, construct structure was evaluated by exploratory factor analysis, and discrimination ability was determined by Item Response Theory.

Results: The NDI demonstrated good internal consistency assessed by Cronbach’s alpha (0.87). The exploratory factor analysis identified only one factor with eigenvalue considered significant (cutoff 1.0). When analyzed by Item Response Theory, eight out of 10 items demonstrated almost ideal difficulty parameter estimates. In addition, eight out of 10 items showed high to perfect estimates of discrimination ability (overall range 0.8 to 2.9).

Conclusions: Amongst patients with chronic neck pain, the NDI was found to have good internal consistency, have unidimensional properties, and an excellent ability to distinguish patients with different levels of perceived disability.

• Implications for Rehabilitation

• The Neck Disability Index has good internal consistency, unidimensional properties, and an excellent ability to distinguish patients with different levels of perceived disability.

• The Neck Disability Index is recommended for use when selecting patients for rehabilitation, setting rehabilitation goals, and measuring the outcome of intervention.

     

Translation,cross-cultural adaptation and psychometric properties of the Back Beliefs Questionnaire in Modern Standard Arabic

Purpose To translate and cross-culturally adapt the Back Beliefs Questionnaire (BBQ) into modern standard Arabic and examine its validity, acceptability and reliability in Arabic-speaking patients with low back pain (LBP). Method The BBQ was forward, back-translated and reviewed by an expert committee. Seventeen bilingual patients completed Arabic and English BBQs. LBP patients (n?=?199) completed the Arabic BBQ. Sixty-four repeated it a week later, and 151 completed the Arabic Fear-avoidance Beliefs Questionnaire (FABQ). Results The expert committee followed advice from the developers to maintain Arabic equivalence of “back trouble(s)”. Patients found the questionnaire comprehensible and acceptable. Agreement between the English and Arabic versions of the BBQ was acceptable, ICC?= 0.65 (0.25–0.86). Most item-by-item agreement ranged from fair to moderate (K?=?0.12–0.54). Mean (SD) of BBQ, FABQ total, work and physical activity subscales were 25.31(6.13), 44.76(19.49), 21.17(10.10) and 13.95(6.65). The BBQ correlated with the FABQ at r?=??0.33, work subscale r?=??0.29 and physical activity r?=??0.30 (all p?α?=?0.73 indicated high internal consistency. Test–retest reliability was high, ICC?=?0.80 (0.68–0.87). Item-by-item agreement ranged from fair to acceptable (K?=?0.31–0.66). Conclusions The Arabic BBQ has good comprehensibility and acceptability, acceptable agreement with the English BBQ, high internal consistency and test–retest reliability. We recommend its use with Arabic-speaking LBP patient to determine their beliefs and attitudes about their back pain, as they have been shown to be important predictors of persistent LBP disability.

• Implications for Rehabilitation

• There are limited valid and reliable outcome measures for back pain in Arabic. The Back Beliefs Questionnaire (BBQ) is a tool that measures attitudes and beliefs about back pain.

• We recommend the use of our valid and reliable, translated and cross-culturally adapted tool with Arabic-speaking patients.

• The tool can measure attitudes and beliefs concerning the future consequences of LBP, with regards to recovery and return to work in this sample.

• Findings will improve back pain management options aimed at reducing back pain disability though challenging and modifying beliefs in the Middle East or with migrant populations in the West.

     

Skill training preferences and technology use in persons with neck and low back pain

Background: Neck pain (NP) and low back pain (LBP) are highly prevalent. Exercise therapy helps, but effect sizes and therapy compliance remain low. Client-centred therapy and technology use may play a role to improve therapy outcomes. To offer technology supported rehabilitation matching patient’s goals, training preferences for rehabilitation and technology familiarity need to be known.

Purpose: This study aims to (1) inventory training preferences and motives, (2) evaluate whether these change during rehabilitation, and (3) evaluate familiarity with using technologies, in persons with NP/LBP.

Method: Semi-structured interviews were conducted with regard to training preferences and usage of mainstream technological devices.

Results: Persons with NP (n?=?40) preferred to train on “lifting”, “prolonged sitting” and “driving a car”. Persons with LBP (n?=?40) preferred to train on “household activities”, “lifting” and “prolonged walking”. Motives were predominantly “ability to work” and “ability to do free time occupations”. Preferences shifted in ranking but remained the same during rehabilitation. Participants were familiar with the surveyed technologies.

Conclusion: Persons with NP or LBP prefer to train on exercises supporting the improvement of everyday life skills. They use technologies in their professional and personal life, which may lower the threshold for the adoption of rehabilitation technologies.

• Implications for rehabilitation

• Persons with neck pain (NP) and persons with low back pain (LBP) prefer to train on specific activities that limit their functional ability during daily tasks. The underlying motives linked to preferred training activities are predominantly “being able to work” and “being able to perform free time occupations”.

• Persons with NP and persons with LBP are accustomed to the use of mainstream technologies and the integration of these technologies in rehabilitation settings seems feasible.

• In order to enable technology supported rehabilitation that is client-centred, technologies need to offer an extensive number of exercises that support (components of) patient training preferences.

     

The validity and reliability of the Thai version of the Kujala score for patients with patellofemoral pain syndrome

Purpose: To develop a Thai version of the Kujala score and show the evaluation of the validity and reliability of the score.

Method: The Thai version of the Kujala score was developed using the forward–backward translation protocol. The 49 PFPS patients answered the Thai version of questionnaires including the Kujala score, Short Form-36 (SF-36) and International Knee Documentation Committee (IKDC) Subjective Knee Form. The validity between the scores has been tested. The reliability was assessed using test–retest reliability and internal consistency.

Results: The Thai version of the Kujala score showed a good correlation with Thai IKDC Subjective Knee Form (Pearson’s correlation coefficient; r?=?0.74: p?r?=?0.586, 0.571 and 0.524, respectively: p?p?p?Conclusion: The Thai version of the Kujala score has shown good validity and reliability. This score can be effectively used for evaluating Thai patients with patellofemoral pain syndrome.

• Implications for Rehabilitation

• The Kujala score is a self-administered questionnaire for patients with patellofemoral pain syndrome (PFPS).

• The validity and reliability of the Thai version of Kujala are compatible with other versions (Turkish, Chinese and Persian version).

• The Thai version of Kujala has been shown to have validity and reliability in Thai PFPS patients and can be used for clinical evaluation and also in the research work.