Understanding the value of rehabilitation: Perspectives from South African Stakeholders.

Background: The need for rehabilitation in South Africa has doubled between 1990 and 2017 and is expected to increase in the coming years. However, the rehabilitation needs of South Africans (and globally) remain largely unmet. Establishing a common understanding of the value of rehabilitation can inform clinical practice and policymaking to achieve Universal Health Coverage (UHC). Objectives: This study aims to explore the value of rehabilitation services in South Africa's public healthcare sector by gathering perspectives from stakeholders. The goal is to inform policy decisions related to the implementation of National Health Insurance (NHI) in South Africa. Method: The study used a phenomenological approach and interpretivist paradigm. Semi-structured interviews were conducted face-to-face, online, or telephonically with 12 stakeholders from various rehabilitation sectors. The value of rehabilitation was analysed and categorised into five main categories: context, service delivery, patient outcomes, economic and financial components, and collaboration within and between sectors. Results: The value of rehabilitation was found to be multifaceted, because of the varying health, economic, and social challenges faced by many South Africans. Conclusion: The study identified components of value-based rehabilitation that should be prioritised in the proposed NHI of South Africa. Future research should explore all stakeholder perspectives, including patients, and provide empirical evidence of rehabilitation's economic and societal value. Contribution: We highlight priority areas that are central to the value of rehabilitation in South Africa and other low- and middle-income countries (LMICs). Tailoring rehabilitation services to patient and community needs is crucial for achieving value-based care. Given South Africa's commitment to the United Nations Convention on the Rights of Persons with Disabilities, prioritising rehabilitation remains essential.

Translation, cultural adaptation and validation of the Swahili Pain Catastrophizing Scale among refugees who survived torture and/or war trauma in Kenya: An observational study.

Background and Aims: Accurate assessment of any patient relies on the use of appropriate measurements which are culturally- and linguistically-applicable and valid. The following study aimed to translate, cross-culturally adapt and test the nomological validity, structural validity, internal consistency, test-retest reliability, sensitivity-to-change and feasibility of the Swahili version of the Pain Catastrophizing Scale (Swa-PCS) among refugees who survived torture/war trauma living with chronic pain in Kenya. Methods: An observational study was conducted. Translation and cultural adaptation of the original PCS for the Swahili-speaking refugee population in Kenya, who survived torture or war trauma was undertaken. Following this process, a validation study was conducted on the newly-adapted instrument, to ascertain the psychometric properties (nomological validity, structural validity, internal consistency, test-retest reliability, sensitivity-to change, and ceiling and floor effects). Results: Fifty participants were included in this study. Correlations between pain catastrophization and fear-avoidance behavior measures were significant (r = 0.538, p < 0.01). Ceiling effects were 42-48% with no floor effects. Standard errors of measurement values were between 0.938 and 3.38. Minimal-detectable-change values were between 2.17 and 7.82. Internal consistency was satisfactory to good, for the whole and subsections respectively (range α = 0.693-0.845). Magnification had the lowest α. Test-retest reliability was also satisfactory to good (range ICC = 0.672-0.878). Confirmatory factor analysis confirmed that the Swa-PCS had three factors which explained the majority of the variance. Root mean square error of approximation and comparative fit index were calculated for goodness-of-fit assessment, and were 0.18 and 0.83, respectively. Conclusion: This study showed that the adapted Swa-PCS displayed overall satisfactory to good internal consistency, test-retest reliability and sensitivity-to-change. Furthermore, the Swa-PCS scores were related to fear-avoidance behavior scores as expected (nomological validity). Structural validation of the Swa-PCS requires further investigation. Further testing of the psychometric properties of the Swa-PCS is however warranted.

Concurrent validity and within-session reliability of gait kinematics measured using an inertial motion capture system with repeated calibration.

INTRODUCTION: Wearable inertial measurement units (IMUs) enable gait analysis in the clinic, but require calibrations that may affect subsequent gait measurements. This study assessed concurrent validity and within-session reliability of gait kinematics measured by a frequently calibrated IMU-based system. Calibration pose accuracy and intra-rater repeatability, and IMU orientation tracking accuracy, were additionally quantified. METHODS: Calibration poses and gait were recorded in 15 women using IMUs and optical motion capture (OMC) (reference standard) simultaneously. Participants performed six consecutive trials: each comprising a calibration pose and a walk. IMU tracking was assessed separately (once-off) using technical static and dynamic tests. Differences of > 5° constituted clinical significance. RESULTS: Concurrent validity for gait revealed clinically significant between-system differences for sagittal angles (root-mean-square error [RMSE] 6.7°-15.0°; bias -9.3°-3.0°) and hip rotation (RMSE 7.9°; bias -4.2°). After removing modelling offsets, differences for all angles (except hip rotation) were < 5°. Gait curves correlated highly between systems (r > 0.8), except hip rotation, pelvic tilt and -obliquity. Within-session reliability of IMU-measured gait angles was clinically acceptable (standard error of measurement [SEM] < 5°). Calibration poses were repeatable (SEM 0.3°-2.2°). Pose accuracy revealed mean absolute differences (MAD) < 5° for all angles except sagittal ankle, hip and pelvis. IMU tracking accuracy demonstrated RMSE ≤ 2.0°. CONCLUSION: A frequently calibrated IMU system provides reliable gait measurements; comparing highly to OMC after removing modelling differences. Calibration poses can be implemented accurately for most angles and consistently. IMU-measured gait data are clinically useful and comparable within participants, but should not be compared to OMC-measured data.

Cross-cultural adaptation and validation of the South African Pain Catastrophizing Scale (SA-PCS) among patients with fibromyalgia.

BACKGROUND: Pain catastrophization has recently been recognized as a barrier to the healthy development of physical functioning among chronic pain patients. Levels of pain catastrophization in chronic pain patients are commonly measured using the Pain Catastrophizing Scale (PCS). OBJECTIVE: To cross-culturally adapt and validate the South African PCS (SA-PCS) among English-, Afrikaans- and Xhosa-speaking patients with fibromyalgia living in the Cape Metropole area, Western Cape, South Africa. METHODS: The original PCS was cross-culturally adapted in accordance with international standards to develop an English, Afrikaans and Xhosa version of the SA-PCS using a repeated measures study design. Psychometric testing included face/content validity, internal consistency (Cronbach's alpha-α), test-retest reliability (intraclass coefficient correlations-ICC), sensitivity-to-change and cross-sectional convergent validity (by comparing the adapted SA-PCS to related constructs). RESULTS: The cross-culturally adapted English, Afrikaans and Xhosa SA-PCS showed good face and content validity, excellent internal consistency (with Chronbach's α = 0.98, 0.98 and 0.97 for the English, Afrikaans and Xhosa SA-PCS, as a whole, respectively), excellent test-retest reliability (with ICC's of 0.90, 0.91 and 0.89 for the English, Afrikaans and Xhosa SA-PCS, respectively); as well as satisfactory sensitivity-to-change (with a minimum detectable change of 8.8, 9.0 and 9.3 for the English, Afrikaans and Xhosa SA-PCS, respectively) and cross-sectional convergent validity (when compared to pain severity as well as South African versions of the Tampa scale for Kinesiophobia and the revised Fibromyalgia Impact Questionnaire). CONCLUSION: The SA-PCS can therefore be recommended as simple, efficient, valid and reliable tool which shows satisfactory sensitivity-to-change and cross-sectional convergent validity, for use among English, Afrikaans and Xhosa-speaking patients with fibromyalgia attending the public health sector in the Western Cape area of South Africa.

Virtual reality exposure therapy as treatment for pain catastrophizing in fibromyalgia patients: proof-of-concept study (Study Protocol).

BACKGROUND: Albeit exercise is currently advocated as one of the most effective management strategies for fibromyalgia syndrome (FMS); the implementation of exercise as a FMS treatment in reality is significantly hampered by patients' poor compliance. The inference that pain catastrophizing is a key predictor of poor compliance in FMS patients, justifies considering the alteration of pain catastrophizing in improving compliance towards exercises in FMS patients. The aim of this study is to provide proof-of-concept for the development and testing of a novel virtual reality exposure therapy (VRET) program as treatment for exercise-related pain catastrophizing in FMS patients. METHODS: Two interlinked experimental studies will be conducted. Study 1 aims to objectively ascertain if neurophysiological changes occur in the functional brain areas associated with pain catastrophizing, when catastrophizing FMS subjects are exposed to visuals of exercise activities. Study 2 aims to ascertain the preliminary efficacy and feasibility of exposure to visuals of exercise activities as a treatment for exercise-related pain catastrophizing in FMS subjects. Twenty subjects will be selected from a group of FMS patients attending the Tygerberg Hospital in Cape Town, South Africa and randomly allocated to either the VRET (intervention) group or waiting list (control) group. Baseline neurophysiological activity for subjects will be collected in study 1 using functional magnetic resonance imaging (fMRI). In study 2, clinical improvement in pain catastrophizing will be measured using fMRI (objective) and the pain catastrophizing scale (subjective). DISCUSSION: The premise is if exposing FMS patients to visuals of various exercise activities trigger the functional brain areas associated with pain catastrophizing; then as a treatment, repeated exposure to visuals of the exercise activities using a VRET program could possibly decrease exercise-related pain catastrophizing in FMS patients. Proof-of-concept will either be established or negated. The results of this project are envisaged to revolutionize FMS and pain catastrophizing research and in the future, assist health professionals and FMS patients in reducing despondency regarding FMS management. TRIAL REGISTRATION: PACTR201011000264179.

Physiotherapists and General Practitioners as first-line of management for acute low back pain: Which is better? A systematic review.

BACKGROUND-: Significant acute low back pain (LBP) is experienced by at least 70% of adults in developing and developed countries at some point during their lifetime.LBP is a common cause leading to disability. There has been an increase in the need for consistency in the management of acute LBP across professions and at present there is no clear indication whether patients with acute LBP should consult a general practitioner or a physiotherapist. OBJECTIVE-: The main objective of the review was to evaluate the effectiveness of physiotherapy primary care compared to general practitioner primary care in outcomes such as pain reduction and improvement of function, for adults with acute LBP. SEARCH STRATEGY-: A comprehensive search of keywords contained in the title and abstract, and the relevant MeSH headings and descriptor terms was performed on the following computerized bibliographic databases: PubMed, CINAHL and Sports Discus on EBSCOHost, Cochrane Library, Scirus, BioMed Central, PEDro, ScienceDirect, Proquest Medical Library, Ingenta Connect, ClinicalTrials.gov, PsycINFO, AMI, DARE, TRIP, Digital Dissertations, Current Content Connect, Current Controlled Trials, and Scopus, during November 2007 and January 2008. An update of the search was conducted in September 2009, prior to publication. SELECTION CRITERIA-: Papers were considered if they were randomized controlled trials focusing on the effectiveness of physiotherapy management compared to general practitioner management in reducing pain and improving function in acute LBP in adults. DATA COLLECTION AND ANALYSIS-: Study design and quality were tabulated, and effect sizes, mean differences and associated 95% confidence intervals were calculated from studies which provided sufficient data, using Thalheimer's effect sizes spreadsheet and RevMan 5. All other data were presented in a narrative summary. RESULTS-: The comprehensive search identified six studies that satisfied the inclusion criteria. However, two studies were excluded as the one did not present subgroup data individually and a usable full report could not be retrieved for the other. Consequently, four studies were included in this review. CONCLUSION-: A firm conclusion as to whether physiotherapists or general practitioners are more effective in managing acute low back pain cannot be made from the results of this review. Further research into the most effective and most cost-effective treatments and referral pathways for acute LBP are therefore warranted.

The prevalence of low back pain in Africa: a systematic review.

BACKGROUND: Low back pain (LBP) is the most prevalent musculoskeletal condition and one the most common causes of disability in the developed nations. Anecdotally, there is a general assumption that LBP prevalence in Africa is comparatively lower than in developed countries. The aim of this review was to systematically appraise the published prevalence studies conducted on the African continent to establish the prevalence of LBP in Africa. METHODS: A comprehensive search was conducted in April 2006. The following databases PEDro, Psychinfo, Science Direct, SportsDiscus, PubMed, CINAHL, Biblioline Pro-African Wide NiPAD and SA ePublications were individually searched using specifically developed search strategies for epidemiological research conducted on LBP amongst the African population. Two reviewers independently evaluated the methodological quality of the studies reviewed. RESULTS: A total of 27 eligible epidemiological studies were included in this review. The majority of the studies (63%) were conducted in South Africa (37%) and Nigeria (26%). The most common population group involved workers (48%), while scholars comprised 15% of the population. 67% of the studies were found to be methodologically sound, and the LBP prevalence of these were analyzed. The mean LBP point prevalence among the adolescents was 12% and among adults was 32%. The average one year prevalence of LBP among adolescents was 33% and among adults was 50%. The average lifetime prevalence of LBP among the adolescents was 36% and among adults was 62%. CONCLUSION: The findings support the global burden of disease of LBP, in addition to suggesting that LBP prevalence among Africans is rising and is of concern. Further research into the most effective strategies to prevent and manage LBP in Africa is warranted.