Arabic Version of the Musculoskeletal Health Questionnaire

1. Abstract

Musculoskeletal disorders (MSDs) constitute one of the leading global causes of chronic physical disability, physical impairment, and healthcare utilization. Traditional clinical assessments in orthopedic, rheumatologic, and physical rehabilitation settings have historically concentrated on narrow biomechanical metrics, including range of motion, manual muscle strength, and radiographic findings. While informative, these objective measures frequently fail to capture the pervasive functional, psychosocial, and quality-of-life repercussions experienced by individuals living with chronic pain and functional restrictions. To address this clinical oversight, the Musculoskeletal Health Questionnaire (MSK-HQ) was originally conceived and validated in the United Kingdom as a comprehensive, generic patient-reported outcome measure (PROM) suitable for deployment across diverse musculoskeletal presentations, anatomical regions, and care pathways.

The cross-cultural adaptation and psychometric validation of the Arabic version of the Musculoskeletal Health Questionnaire (MSK-HQ-Ar) provides a standardized, culturally validated instrument tailored for Arabic-speaking patient cohorts. Developed following the rigorous international translation guidelines of the International Society for Pharmacoeconomics and Outcomes Research (ISPOR), the MSK-HQ-Ar comprises 14 primary scored items measured along a 5-point Likert response scale (scored from 0 to 4, yielding a total score range from 0 to 56, with higher values reflecting superior musculoskeletal health status) alongside an un-scored physical activity monitoring metric. The instrument evaluates multidimensional domains including diurnal and nocturnal pain severity, physical functioning (walking, washing, dressing), occupational and social participation, sleep quality, systemic fatigue, emotional distress, self-efficacy, understanding of condition, and general symptom interference.

Psychometric evaluation conducted in a clinical cohort of 149 patients in Saudi Arabia demonstrated strong internal consistency (Cronbach’s alpha = 0.88) and exceptional test-retest reliability across a two-week interval (Intraclass Correlation Coefficient, ICC = 0.94). The Standard Error of Measurement (SEM = 2.46) and Minimal Detectable Change (MDC = 6.8) delineate clear statistical boundaries for identifying genuine clinical improvement beyond measurement error. Convergent validity was robustly supported via strong correlation with the EuroQol 5-Dimension 5-Level questionnaire (EQ-5D-5L; Spearman’s rho = 0.711). Consequently, the MSK-HQ-Ar represents an essential, evidence-based tool for clinical rehabilitation monitoring, orthopedic triage, and international comparative health research across the Arabic-speaking world.

2. Keywords

Musculoskeletal Disorders, Patient-Reported Outcome Measures, Cross-Cultural Adaptation, Psychometrics, Arabic Version, Health-Related Quality of Life, Physical Rehabilitation, Self-Efficacy, Construct Validity, Test-Retest Reliability

3. Authors

The cross-cultural adaptation and psychometric validation of the Arabic Version of the Musculoskeletal Health Questionnaire was conducted by a multidisciplinary team of rehabilitation scientists and clinical researchers:

• Fahad Saad Algarni, PhD, PT — Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia. (Corresponding Author: [email protected])
• Abdulmajeed Nasser Alotaibi, PT — Ministry of Health, Children Hospital, Taif, Saudi Arabia.
• Abdulrahman Mohammed Altowaijri, MD — Department of Rehabilitation Medicine, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia. (Email: [email protected])
• Hana Al-Sobayel, PhD, PT — Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia. (Email: [email protected])

4. Purpose

Musculoskeletal conditions represent an immense global epidemiological challenge, standing as a primary driver of long-term physical impairment, work absenteeism, and compromised health-related quality of life (HRQoL). In the Middle East, and particularly within the Kingdom of Saudi Arabia, the prevalence of spinal disorders, osteoarthritis, and occupational overuse syndromes has expanded rapidly due to demographic shifts, sedentary urban lifestyles, and metabolic comorbidities. Despite this significant disease burden, clinical management has historically relied on anatomically restricted tools (e.g., knee- or shoulder-specific outcome indices) or generic quality-of-life batteries that lack sensitivity to musculoskeletal impairments. Moreover, routine clinical assessments frequently prioritized clinician-derived objective metrics—such as joint mobility degrees, reflex assessments, and radiographic degenerations—which routinely correlate poorly with the patient’s lived experience of chronic functional restriction and symptom burden.

The overarching purpose of adapting and validating the Musculoskeletal Health Questionnaire into Arabic was to establish a single, psychometrically sound, patient-centered instrument capable of standardizing musculoskeletal health assessment across all clinical sectors. The MSK-HQ was developed to transcend anatomical silos, functioning as an overarching, holistic metric across primary care, orthopedic surgery, rheumatology clinics, and physical therapy outpatient rehabilitation. By providing an ecologically and culturally aligned Arabic translation, researchers and clinicians can consistently evaluate the effectiveness of surgical interventions, pharmacological management, and exercise therapy using an identical measurement standard across diverse patient pathways.

From an applied clinical perspective, the MSK-HQ-Ar provides actionable diagnostic and longitudinal trajectory data. It allows physical therapists and orthopedic clinicians to rapidly benchmark baseline functional capacity, monitor response to therapeutic regimens, and identify secondary psychosocial vulnerabilities that might otherwise derail physical rehabilitation, such as poor self-efficacy or severe emotional distress. In longitudinal health services research, the tool equips investigators to conduct comparative effectiveness research, health economic evaluations, and multinational collaborative trials by bridging the linguistic barrier between Western-origin outcome frameworks and the Arabic-speaking population.

Theoretically, the adaptation addresses the vital psychometric necessity of cross-cultural equivalence. Translating a questionnaire involves far more than literal word substitution; it demands conceptual, semantic, idiomatic, and operational invariance across distinct sociocultural environments. In Arabic-speaking societies, where family structures, social obligations, religious practices (such as prayer-related physical postures), and health beliefs differ substantially from Western Europe, establishing an instrument that authentically captures health state perceptions is paramount for valid psychometric measurement.

5. Psychological Construct

The core construct captured by the MSK-HQ-Ar is musculoskeletal health status, operationalized as a holistic, multidimensional continuum encompassing somatic, functional, cognitive, and psychosocial dimensions of human life affected by neuro-musculoskeletal pathology. Rather than isolating pain as an independent sensory phenomenon, the construct conceptualizes musculoskeletal illness as a dynamic system wherein pain interacts continuously with physical capability, role execution, psychological well-being, and personal agency. The instrument integrates several interrelated domains:

1. Diurnal and Nocturnal Somatic Pain and Stiffness

This dimension measures the average intensity of joint, bone, and muscle discomfort as well as articular stiffness during daily waking hours and sleep periods over a two-week recall window. Nocturnal pain and morning stiffness are established clinical indicators of inflammatory activity, nocturnal micro-trauma, and severe functional deterioration that directly undermine restorative sleep.

2. Basic and Instrumental Functional Mobility

Functional capacity is appraised through items targeting essential physical tasks: ambulation (walking capacity), self-care activities of daily living (such as bathing and dressing), and higher-order energetic leisure activities or athletic pursuits. Impairment in these activities constitutes the tangible, daily physical consequence of structural and biomechanical breakdown in the human kinetic chain.

3. Occupational and Social Role Participation

This component captures the extent to which musculoskeletal dysfunction obstructs performance in employment duties, domestic responsibilities, and civic or familial social interactions. By evaluating role limitation, the construct encompasses the transition from simple physical impairment to societal and economic participation restriction, reflecting the patient’s subjective appraisal of life disruption.

4. Restorative Sleep Disturbance and Systemic Fatigue

Chronic pain syndromes regularly compromise neurobiological sleep architecture, initiating bidirectional feedback loops where fragmented sleep exacerbates nociceptive hyperalgesia and systemic fatigue. The MSK-HQ explicitly captures sleep disruption and secondary exhaustion, acknowledging them as defining clinical sequelae of sustained musculoskeletal strain rather than unrelated comorbidities.

5. Affective and Emotional Health

Evaluating emotional distress—specifically feelings of anxiety, low mood, and depressive symptoms attributable to the physical condition—acknowledges the profound neuroaffective links connecting persistent physical suffering with psychological distress. Chronic impairment frequently initiates grief over lost physical capabilities, anticipatory anxiety regarding permanent disability, and clinical depression.

6. Health Literacy, Self-Efficacy, and Independence

A distinctive innovation of the MSK-HQ framework is its integration of cognitive coping resources. It appraises the respondent’s perceived understanding of their diagnosis, their confidence in implementing symptom-management strategies (self-efficacy), and their sustained sense of personal autonomy and independence in daily life. Patients with identical physical pathology often exhibit vastly different clinical trajectories depending on their cognitive appraisal of disease controllability and perceived personal agency.

6. Theoretical Framework

The architectural foundation of the MSK-HQ is anchored in the Biopsychosocial Model originally conceptualized by George Engel (1977), synthesized with the World Health Organization’s International Classification of Functioning, Disability and Health (ICF). Engel posited that somatic pathology cannot be understood or treated in isolation from psychological processes and sociocultural environmental contexts. Musculoskeletal pathology manifests through neurophysiological nociception (the biological axis), subjective suffering and catastrophic cognitive appraisals (the psychological axis), and withdrawal from occupational and communal obligations (the social axis). The MSK-HQ operationalizes Engel’s philosophy into an integrated, brief psychometric battery that gives equal weight to somatic, cognitive, and functional domains.

Under the WHO ICF taxonomy, health conditions are mapped across three interrelated levels: Body Functions and Structures (e.g., pain, stiffness, fatigue), Activities (e.g., walking, self-care, domestic chores), and Participation (e.g., work productivity, social interactions). Traditional orthopedics focused almost exclusively on Body Functions and Structures. In contrast, the MSK-HQ directly spans all three ICF strata, contextualized by Personal Factors such as self-efficacy and health literacy. This structural integration ensures that clinicians assess the complete clinical profile of disability rather than an isolated anatomical joint.

Furthermore, the questionnaire is deeply rooted in Albert Bandura’s Self-Efficacy Theory (1977). Bandura demonstrated that an individual’s belief in their capability to execute behaviors necessary to produce specific performance attainments determines their resilience in the face of adversity. Within chronic illness management, perceived self-efficacy dictates whether a patient actively engages in rehabilitation exercises, adopts behavioral pacing, or succumbs to passive helplessness. By embedding explicit measurements of symptom management confidence and illness understanding, the MSK-HQ operationalizes cognitive agency as a core metric of musculoskeletal health, recognizing that self-efficacious patients consistently experience superior long-term clinical and functional outcomes.

7. Validity

The construct and criterion-related validity of the Arabic Version of the Musculoskeletal Health Questionnaire was evaluated using formal psychometric methodologies. The adaptation process strictly adhered to the internationally recognized Principles of Good Practice for Translation and Cultural Adaptation defined by the ISPOR Task Force, encompassing forward translation, reconciliation, backward translation, expert panel harmonization, and cognitive debriefing to guarantee structural, semantic, and conceptual validity.

Convergent Validity

Convergent construct validity was examined by comparing the MSK-HQ-Ar against the established, culturally validated Arabic adaptation of the EuroQol 5-Dimension 5-Level questionnaire (EQ-5D-5L), a gold-standard generic instrument measuring mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. A priori hypotheses posited that because both tools evaluate physical disability and quality of life, scores would demonstrate a robust positive correlation. Statistical analysis utilizing Spearman’s rank correlation coefficient yielded a strong positive correlation:

• EQ-5D-5L Index vs. MSK-HQ-Ar Total Score: rho = 0.711 (p < 0.001)

This significant association confirmed that elevated total scores on the MSK-HQ-Ar reliably represent superior overall health-related quality of life and diminished disability, confirming convergent validity in the target population.

Content and Face Validity

Content validity was confirmed by an expert clinical multidisciplinary panel comprising physical therapists, orthopedic surgeons, and psychometricians who reviewed item phrasing, cultural relevance, and clarity. Cognitive debriefing conducted with clinical patients established that respondents found the instructions straightforward, the 2-week recall window appropriate, and the questions reflective of their daily challenges. No ceiling or floor effects were observed across the total score distribution, indicating that the tool possesses adequate dynamic range across mild, moderate, and severe clinical cohorts.

8. Reliability

The reliability assessment of the MSK-HQ-Ar encompassed internal consistency, temporal test-retest reliability, and absolute measurement error indicators, conducted across a sample of adult patients presenting with diverse musculoskeletal conditions in clinical outpatient facilities.

Internal Consistency

Internal consistency was calculated across the 14 core items using Cronbach’s alpha. The analysis yielded a coefficient of 0.88, indicating high internal homogeneity without substantial item redundancy. This value aligns closely with the original English development cohort (alpha = 0.88–0.89) and other validated linguistic adaptations, demonstrating that the structural cohesion of the construct was fully maintained through translation.

Test-Retest Temporal Stability

Temporal stability was established by administering the MSK-HQ-Ar to a subgroup of clinically stable patients across a two-week testing interval. Reliability was estimated using the Intraclass Correlation Coefficient (ICC, two-way mixed effects model, absolute agreement). The resulting coefficient was ICC = 0.94 (95% CI: 0.91–0.96), demonstrating exceptional reproducibility over time when clinical status remains unchanged.

Measurement Error and Sensitivity Metrics

To differentiate authentic clinical change from random measurement variance, absolute reliability parameters were calculated:

• Standard Error of Measurement (SEM): 2.46 points. The SEM quantifies the precision of individual scores and baseline noise within the instrument.
• Minimal Detectable Change (MDC at 95% confidence level): 6.8 points (calculated as SEM × 1.96 × √2). In clinical rehabilitation and longitudinal tracking, a patient must demonstrate an improvement or deterioration exceeding 6.8 points on the 56-point scale to provide 95% statistical certainty of true, meaningful clinical change rather than instrument instability.

9. Factor Analysis

The structural dimensionality and item homogeneity of the MSK-HQ-Ar were evaluated to confirm whether the 14 items contribute coherently to a unified overarching construct of musculoskeletal health. In the original British development cohort by Hill et al. (2016), exploratory and confirmatory factor analyses supported a predominantly unidimensional composite score representing overall musculoskeletal health, notwithstanding the presence of interconnected sub-facets representing physical functioning, psychological status, and self-management.

In the Arabic psychometric validation by Algarni et al. (2020), structural cohesion was confirmed through item-total correlation matrices and scale homogeneity analyses:

• Corrected item-total correlation coefficients across all 14 items were positive and robust, ranging between 0.38 and 0.74, indicating that every individual query shared substantial common variance with the overarching composite index.
• The item evaluating interference with work and daily routine exhibited the highest correlation with the total score (r = 0.74), reinforcing the theoretical premise that occupational and role participation forms the practical core of musculoskeletal health status.
• Items capturing physical function, walking, and diurnal pain demonstrated similarly strong loadings on the general construct (loadings > 0.65).
• The item capturing understanding of condition and management demonstrated the lowest item-total correlation (r = 0.38). This psychometric behavior closely replicated the findings of the original English validation study, where the understanding domain maintained a moderate, distinct association with the general factor. This confirms that illness cognition, while an essential component of comprehensive musculoskeletal health, operates with degree of statistical independence from acute somatic symptom severity.

Collectively, these structural analyses substantiate the use of a single composite summative score ranging from 0 to 56 for clinical and epidemiological research.

10. Instrument / Measurement Tool

• Test Type: Patient-Reported Outcome Measure (PROM); health-related quality of life and physical functional impairment questionnaire.
• Format: 14 primary scored items plus 1 un-scored supplemental physical activity monitoring item; self-administered paper-and-pencil or digital survey.
• Item Count: 14 scored items evaluating diurnal pain, nocturnal pain, walking, washing/dressing, physical activity, work/daily routine, social activities, sleep quality, fatigue, emotional well-being, understanding condition, confidence in managing symptoms, independence, and overall symptom impact.
• Response Scale: 14 items, 5-point Likert scale.
• Scoring Rules:
  • Each individual item is rated on a 5-point Likert scale from 0 to 4.
  • Items are coded such that higher scores reflect superior health status and lower functional impairment: 4 = no symptoms / no interference / high confidence; 0 = severe symptoms / total interference / no confidence.
  • Total score is calculated by summing the numerical responses of all 14 scored items, yielding a composite score ranging from 0 to 56.
  • Higher overall scores represent better musculoskeletal health, superior physical capacity, and higher self-efficacy. Lower scores represent severe pain, significant disability, and profound psychosocial interference.
  • Missing data rule: If up to 4 items are missing, responses can be imputed using the mean of completed items; if more than 4 items are missing, the composite total score should be treated as invalid.
• Administration Time: Approximately 3 to 5 minutes for self-completion.
• Target Population: Adult clinical patients (ages 18 to 65+ years) presenting with acute, subacute, or chronic musculoskeletal conditions, spinal disorders, arthropathies, or systemic rheumatologic disorders.

11. Permissions & Fee and Test Year

The original Musculoskeletal Health Questionnaire was developed in 2016 through a collaborative initiative between the University of Oxford, Keele University, and Arthritis Research UK (now Versus Arthritis). The Arabic cross-cultural adaptation and psychometric validation study was conducted and published in 2020 by Fahad Saad Algarni and colleagues at King Saud University, Riyadh, Saudi Arabia.

The MSK-HQ is copyrighted by Oxford University Innovation Ltd. It is accessible free of charge for non-commercial clinical practice, academic research, and public health delivery. However, academic researchers, healthcare systems, and commercial entities must obtain an appropriate licensing agreement prior to implementation. Requests for formal usage permissions, digital adaptations, or commercial deployment can be registered through Oxford University Innovation Clinical Outcomes (https://clinicaloutcomes.ox.ac.uk). The original Arabic adaptation validation data was published open-access in the International Journal of Environmental Research and Public Health under the terms of the Creative Commons Attribution (CC BY 4.0) license.

12. References

• Algarni, F. S., Alotaibi, A. N., Altowaijri, A. M., & Al-Sobayel, H. (2020). Arabic Version of the Musculoskeletal Health Questionnaire: Cross-Cultural Adaptation, Validity, and Reliability. International Journal of Environmental Research and Public Health, 17(14), Article 5168. https://doi.org/10.3390/ijerph17145168
• Bandura, A. (1977). Self-efficacy: Toward a unifying theory of behavioral change. Psychological Review, 84(2), 191–215. https://doi.org/10.1037/0033-295X.84.2.191
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• Bekairy, A. M., Al-Ghamdi, S., Al-Shehri, A., Al-Jadid, M., Al-Ghamdi, M., & Al-Dossari, D. (2018). Validity and reliability of the Arabic version of the EuroQOL (EQ-5D): A study from Saudi Arabia. International Journal of Health Sciences, 12(2), 16–21.
• Engel, G. L. (1977). The need for a new medical model: A challenge for biomedicine. Science, 196(4286), 129–136. https://doi.org/10.1126/science.847460
• Hill, J. C., Kang, S., Benedetto, E., Myers, H., Blackburn, S., Smith, S., Dunn, K. M., Hay, E., Rees, J., Beard, D., Glyn-Jones, S., Barker, K., Ellis, B., Fitzpatrick, R., & Price, A. (2016). Development and initial cohort validation of the Arthritis Research UK Musculoskeletal Health Questionnaire (MSK-HQ) for use across musculoskeletal care pathways. BMJ Open, 6(8), Article e012331. https://doi.org/10.1136/bmjopen-2016-012331
• Norton, S., Ellis, B., Santana, M., & Galloway, J. (2019). Validation of the Musculoskeletal Health Questionnaire in inflammatory arthritis: A psychometric evaluation. Rheumatology, 58(1), 45–51. https://doi.org/10.1093/rheumatology/key240
• Terwee, C. B., Bot, S. D., de Boer, M. R., van der Windt, D. A., Knol, D. L., Dekker, J., Bouter, L. M., & de Vet, H. C. (2007). Quality criteria were proposed for measurement properties of health status questionnaires. Journal of Clinical Epidemiology, 60(1), 34–42. https://doi.org/10.1016/j.jclinepi.2006.03.012
• Wild, D., Grove, A., Martin, M., Eremenco, S., McElroy, S., Verjee-Lorenz, A., & Erikson, P. (2005). Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes (PRO) Measures: Report of the ISPOR Task Force for Translation and Cultural Adaptation. Value in Health, 8(2), 94–104. https://doi.org/10.1111/j.1524-4733.2005.04054.x
• World Health Organization. (2001). International Classification of Functioning, Disability and Health: ICF. World Health Organization. https://apps.who.int/iris/handle/10665/42407

13. Items of the Scale