Objective Musculoskeletal (MSK) pain is being increasingly reported by patients as one of the most common persistent symptoms in post-COVID-19 syndrome or Long COVID. However, there is a lack of understanding of its prevalence, characteristics, and underlying pathophysiological mechanisms. The objective of this review is to identify and describe the features and characteristics of MSK pain in Long COVID patients. Methods The narrative review involved a literature search of the following online databases: MEDLINE (OVID), EMBASE (OVID), CINAHL, PsyclNFO, and Web of Science (December 2019 to February 2022). We included observational studies that investigated the prevalence, characteristics, risk factors and mechanisms of MSK pain in Long COVID. After screening and reviewing the initial literature search results, a total of 35 studies were included in this review. Results The overall reported prevalence of MSK pain in Long COVID ranged widely from 0.3% to 65.2%. The pain has been reported to be localized to a particular region or generalized and widespread. No consistent pattern of progression of MSK pain symptoms over time was identified. Female gender and higher BMI could be potential risk factors for Long COVID MSK pain, but no clear association has been found with age and ethnicity. Different pathophysiological mechanisms have been hypothesized to contribute to MSK pain in Long COVID including increased production of proinflammatory cytokines, immune cell hyperactivation, direct viral entry of neurological and MSK system cells, and psychological factors. Conclusion MSK pain is one of the most common symptoms in Long COVID. Most of the current literature on Long COVID focuses on reporting the prevalence of persistent MSK pain. Studies describing the pain characteristics are scarce. The precise mechanism of MSK pain in Long COVID is yet to be investigated. Future research must explore the characteristics, risk factors, natural progression, and underlying mechanisms of MSK pain in Long COVID.

ObjectivesThe main aim of this study was to investigate physiotherapists’ pain attitudes and beliefs towardss non-specific chronic low back pain (NSCLBP) and identify whether they are associated with treatment selection.DesignCross-sectional study.SettingSaudi Arabia (SA).ParticipantsAn online survey was distributed to physiotherapists from April 2018 to January 2019.Primary and secondary outcome measures(1) Biomedical and biopsychosocial treatment orientations were assessed using the Pain Attitudes and Beliefs Scale for Physiotherapists. (2) Frequent potential treatments used by physiotherapists for individuals with NSCLBP were identified through a 20-item survey. (3) The association between physiotherapists’ pain attitudes and beliefs and treatment selection was investigated. Descriptive analysis, Pearson’s correlation and multinomial logistic regression were used to analyse the data using SPSS (V.26).ResultsA total of 304 responses were included in the analysis. The biomedical (34.45±7.84) and biopsychosocial (31.74±5.67) treatment orientations were relatively low. The most frequent treatments used by physiotherapists were home exercises (87.1%), patient education (82.0%), specific back exercises (80.6%), electrotherapy (61.9%), soft tissue release (58.8%) and spinal mobilisation or manipulation (57.8%). Physiotherapists with a stronger biomedical treatment orientation were more likely to use treatments (p<0.05) such as specific back exercises, electrotherapy, soft tissue release, hydrotherapy, massage, lumbar supports and acupuncture. However, physiotherapists with a stronger biopsychosocial treatment orientation were more likely to use cognitive functional therapy (p<0.01).ConclusionsBiomedical and biopsychosocial treatment orientations were relatively low among physiotherapists in SA. Although treatments such as home exercises and patient education were frequently used, some passive and traditional treatments not recommended by clinical practice guidelines continue to be commonly used by physiotherapists in SA. This study has confirmed that physiotherapists’ pain attitudes and beliefs are significantly associated with treatment selection when managing individuals with NSCLBP.Trial registration numberResearchregistry3944.

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