Preoperative glycaemic control, number of pain locations, structural knee damage, self-reported central sensitisation, satisfaction and personal control are predictive of 1-year postoperative pain, and change in pain from pre- to 1-year posttotal knee arthroplasty.

PURPOSE: The aim of this study was to identify preoperative predictors for 1-year posttotal knee arthroplasty (TKA) pain and pre- to post-TKA pain difference in knee osteoarthritis (KOA) patients. METHODS: From March 2018 to July 2023, this prospective longitudinal cohort study enrolled KOA patients awaiting TKA from four hospitals in Belgium and the Netherlands. Different biopsychosocial predictors were assessed preoperatively by questionnaires and physical examinations (input variables). The Knee injury and Osteoarthritis Outcome Score (KOOS) subscale pain was used to measure pain intensity. The absolute KOOS subscale pain score 1-year post-TKA and the difference score (ΔKOOS = 1-year postoperative - preoperative) were used as primary outcome measures (output variables). Two multivariable linear regression analyses were performed. RESULTS: Two hundred and twenty-three participants were included after multiple imputation. Worse absolute KOOS subscale pain scores 1-year post-TKA and negative or closer to zero ΔKOOS subscale pain scores were predicted by self-reported central sensitisation, lower KOA grade and preoperative satisfaction, and higher glycated haemoglobin, number of pain locations and personal control (adjusted R2 = 0.25). Additional predictors of negative or closer to zero ΔKOOS subscale pain scores were being self-employed, higher preoperative pain and function (adjusted R2 = 0.37). CONCLUSION: This study reports different biopsychosocial predictors for both outcomes that have filtered out other potential predictors and provide value for future studies on developing risk assessment tools for the prediction of chronic TKA pain. PROTOCOL REGISTRATION: The protocol is registered at clinicaltrials.gov (NCT05380648) on 13 May 2022. LEVEL OF EVIDENCE: Level II.

Implementation of health education interventions at Dutch music schools.

A randomized controlled trial was conducted comparing the effects of a biopsychosocial course (PRESTO-Play) vs. physical activity promotion (PRESTO-Fit) to reduce disability related to musculoskeletal disorders in music students. The current study provides an external validation and a formative and process evaluation, allowing for a better interpretation of results. First, a group of experts was asked to complete a structured evaluation of design and content of the trial. Second, quantitative and qualitative data were analysed from different stakeholders (students, therapists and conservatory staff) using questionnaires, logs, field notes and emails to evaluate fidelity, dose delivered, dose received, reach and context. Results are presented descriptively. Two authors independently identified key responses that were merged into themes. Although no difference in disability was found between interventions, closer evaluation revealed that participants in PRESTO-Play reported that they learned about prevention of physical complaints and were more satisfied with course contents compared with PRESTO-Fit. Study design and contents of the interventions were found to be valid, with an appropriate dose delivered. Feedback from students and logs suggested that behavioural change and psychosocial principles in PRESTO-Play might have not been implemented optimally. Only moderate fidelity in both groups and too little contrast between interventions could have influenced results. Low attendance rates and a presumed lack of generalization further decreased possible effectiveness. Context greatly influenced implementation. Implementing a future health course with closer collaboration with the institution could optimize accessibility and communication, encourage attendance and enhance motivation for behavioural change.

Effectiveness of Primary Care Interventions Using a Biopsychosocial Approach in Chronic Low Back Pain: A Systematic Review.

BACKGROUND AND OBJECTIVE: Recent systematic reviews show promising effects for multidisciplinary biopsychosocial (BPS) interventions in patients with chronic low back pain (CLBP). Nowadays, BPS interventions have also been developed for primary care physiotherapy settings. Our aim was to systematically review the evidence on the effectiveness of primary care BPS interventions in improving functional disability, pain, and work status for patients with CLBP. Secondly, we aimed to provide an elaborated overview of BPS intervention designs, physiotherapist training programs, and process-related factors (practical implementation). METHODS: We searched in scientific databases and reference lists. Randomized controlled trials (RCTs) evaluating primary care physiotherapist-led BPS interventions in adults (≥18 years) with nonspecific CLBP (≥12 weeks) were included. RESULTS: Our search resulted in 943 references; 7 RCTs were included (1,426 participants). Results show moderate-quality evidence (3 trials; 991 participants) that a BPS intervention is more effective than education/advice for reducing disability and pain in the short, medium, and long term. Low-quality evidence (4 trials; 435 participants) was found for no difference with physical activity treatments. CONCLUSIONS: BPS interventions seem more effective than education/advice and were found to be as effective as physical activity interventions in patients with CLBP. BPS interventions with a clear focus on psychosocial factors (understanding pain, unhelpful thoughts, coping styles, and goal setting) seem most promising. Sufficient delivery of BPS elements is expected when physiotherapists participate in training programs with extensive support prior and during delivery (manual, supervision, and informative resources).

EXPOSURE IN VIVO VERSUS PAIN-CONTINGENT PHYSICAL THERAPY IN COMPLEX REGIONAL PAIN SYNDROME TYPE I: A COST-EFFECTIVENESS ANALYSIS.

OBJECTIVES: The aim of this study was to evaluate the cost-effectiveness of exposure in vivo (EXP, a cognitive-behavioral treatment targeting pain-related fear) in Complex Regional Pain Syndrome Type I (CRPS-I), as compared to pain-contingent physical therapy (PPT). METHODS: Data from a randomized controlled trial were used to compare the cost-effectiveness of EXP versus PPT from a societal perspective. Intervention costs, other healthcare costs, costs to patient and family, and productivity losses were included. The main outcomes were changes in the SF-36 physical component scale and quality-adjusted life-years. Changes were followed until 6 months after treatment. Uncertainty was estimated using nonparametric bootstrap analysis, cost-effectiveness acceptability curves and cost-effectiveness planes. Sensitivity analyses were performed to check robustness of findings. RESULTS: Forty-six patients were randomized and thirty-eight completed the study. Over 6 months, EXP resulted in greater improvement in physical health-related quality of life and quality-adjusted life-years than PPT. Despite higher initial treatment costs, EXP showed a tendency to reduce all costs compared with PPT; healthcare costs were significantly reduced. Furthermore, the cost-effectiveness planes were in favor of EXP. Sensitivity analyses, for different program costs and complete cases only, confirmed robustness of these findings. CONCLUSIONS: EXP, a cognitive-behavioral treatment, seems more cost-effective than PPT in CRPS patients with pain-related fear. The initial higher costs for EXP are offset by a long-term reduction of costs for healthcare use, and a tendency to lower work absenteeism and reduced societal costs. Due to low sample sizes, replication of findings is required to confirm results.

Illness Perceptions Explain the Variance in Functional Disability, but Not Habitual Physical Activity, in Patients With Chronic Low Back Pain: A Cross-Sectional Study.

INTRODUCTION: Although the importance of psychosocial factors has been highlighted in many studies in patients with chronic low back pain (CLBP), there is a lack of research examining the role of illness perceptions in explaining functional disability and physical activity in patients with CLBP. AIM: The aim of the study was to explore the value of illness perceptions in explaining functional disability and physical activity in patients with CLBP. METHODS: Eighty-four participants with CLBP (of > 3 months' duration) completed a battery of questionnaires investigating psychosocial factors (Pain Catastrophizing Scale [PCS], Illness Perceptions Questionnaire Revised [IPQ-R], and 36-Item Short Form mental health scale [SF-36_MH]) and perceived pain intensity (visual analog scale [VAS]), as well as the Oswestry Disability Index (ODI) and Baecke questionnaire. The latter 2 were entered separately as dependent variables in a regression analysis. RESULTS: The combined variables (VAS, PCS, SF-36_MH, IPQ-R) accounted for 62% of the variance in functional disability (ODI). Adding the results of the IPQ-R to the scores of the other 3 variables (VAS, PCS, SF-36_MH) significantly increased the explained variance of ODI scores in CLBP patients, yielding 18% additional information (P < 0.01). Only 5% of the variance in the Baecke questionnaire was explained by combining the 4 variables. None of the single variables alone made a significant contribution to R². CONCLUSIONS: Illness perceptions are an important factor for explaining functional disability, but not for explaining habitual physical activity in CLBP patients.

Daily actions, challenges, and needs among Dutch parents while supporting the participation of their child with a physical disability at home, at school, and in the community: a qualitative diary study.

BACKGROUND: Parents have a vital influence on the participation of their child with a physical disability. The aim of this study is to gain insight into parents' own daily actions, challenges, and needs while supporting their child with a physical disability at home, at school, and in the community. An additional objective of this study is to refine the preliminary thematic framework previously identified in a scoping review. METHODS: A qualitative research inquiry was performed based on using a diary over a 7-day period to gather data. To systematically organise data into a structured format, content analysis has been applied using both inductive and deductive reasoning guided by the existing preliminary thematic framework. RESULTS: Analysis of the eligible diaries shows that the actions mentioned by the 47 parents describe several efforts to enhance participation of their children with a physical disability by using, enabling, or changing the social and physical environment, or by supporting their child to perform or engage in meaningful activities. Those parents' actions are primarily a result of challenges caused by restrictions in social and physical environments. Parental responses highlighted, above all, the need for environments designed for all people. Based on the findings a redefined thematic framework is presented. CONCLUSIONS: Parents' actions, challenges, and needs are mainly directed towards the social or/and physical environment. The presented thematic framework can offer practitioners knowledge to support parents. More work is necessary to provide tailored approaches. Paediatric rehabilitation may need to address the importance of the environment on the participation of a child with a physical disability.

Multidisciplinary Treatment for Adolescents with Chronic Pain and/or Fatigue: Who Will Benefit?

PURPOSE: The aims of this study were, first, to determine the percentage of adolescents with chronic pain/fatigue successfully treated with rehabilitation treatment for chronic pain/fatigue and, second, to identify predictors for a successful rehabilitation treatment. METHODS: Treatment success is scored based on a combination of predefined clinically relevant changes in 4 outcome measures: level of pain/fatigue, school absence, physical functioning, and psychosocial functioning. A forward stepwise logistic regression analysis with treatment success as a dependent variable is performed to identify predictors for successful treatment. RESULTS: A total of 172 adolescents (mean age 16.2 [SD = 2.5]; 85.5% girls) participated. Almost half (49.6%) of the adolescents had a successful treatment. The explained variance for the complete model explaining treatment success was 49% (R2 = 0.487). Patients with a higher level of pain/fatigue and a passive coping style pretreatment improved most, and these factors could thus be indicated as predictors for successful treatment. Also, gender significantly contributed to the prediction, in favor of boys. CONCLUSIONS: Regarding the first aim, using predefined treatment success based on clinically relevant changes, half of the participants had a successful treatment. Concerning the second aim, adolescents with a high level of pain/fatigue and those with a high passive coping style pretreatment have a better ability to change their functioning during treatment. Boys benefit more than girls.

Energy Expenditure during Functional Daily Life Performances in Patients with Fibromyalgia.

OBJECTIVE: The objective of this study was to evaluate whether patients with fibromyalgia FM need more oxygen and more time to complete a walking and stair-climbing task than healthy volunteers and perceive the performance of these tasks as more strenuous. Furthermore, it was evaluated whether a less efficient performance is more pronounced in patients reporting a higher level of fear of movement. METHODS: Thirty patients with FM and 30 matched healthy volunteers completed a 500-meter walking and a stair-climbing task (60 steps) while wearing a mobile gas analyzing unit. Mean and total oxygen consumption and time needed to complete each task were recorded. After both tasks, a Borg score was used to measure perceived exertion. Fear of movement was measured with the Tampa Scale for Kinesiophobia. RESULTS: Patients with FM needed more time to complete the walking and stair-climbing task and reported higher levels of exertion compared to healthy volunteers. However, the total oxygen consumption for performing both tasks was not different. In patients with FM, a higher level of fear of movement was associated with a higher perceived exertion after the walking task. Interestingly, a higher somatic focus is related to a lower mean oxygen consumption needed to perform the stair-climbing task. CONCLUSION: In conclusion, patients with FM perceive a walking and stair-climbing task as more strenuous than healthy controls, even though they walked slower and no differences in total O2 consumption during completion of both tasks were found.

Can we "predict" long-term outcome for ambulatory transcutaneous electrical nerve stimulation in patients with chronic pain?

BACKGROUND: Evidence for effectiveness of transcutaneous electrical nerve stimulation (TENS) is still inconclusive. As heterogeneity of chronic pain patients might be an important factor for this lack of efficacy, identifying factors for a successful long-term outcome is of great importance. METHODS: A prospective study was performed to identify variables with potential predictive value for 2 outcome measures on long term (6 months); (1) continuation of TENS, and (2) a minimally clinical important pain reduction of ≥ 33%. At baseline, a set of risk factors including pain-related variables, psychological factors, and disability was measured. RESULTS: In a multiple logistic regression analysis, higher patient's expectations, neuropathic pain, no severe pain (< 80 mm visual analogue scale [VAS]) were independently related to long-term continuation of TENS. For the outcome "minimally clinical important pain reduction," the multiple logistic regression analysis indicated that no multisited pain (> 2 pain locations) and intermittent pain were positively and independently associated with a minimally clinical important pain reduction of ≥ 33%. CONCLUSION: The results showed that factors associated with a successful outcome in the long term are dependent on definition of successful outcome.

Is There a Need for Including Spiritual Care in Interdisciplinary Rehabilitation of Chronic Pain Patients? Investigating an Innovative Strategy.

OBJECTIVE: Chronic noncancer pain influences patient's quality of life and their ability to cope. Pain relieving medication and other specific treatments commonly integrated in biopsychosocial rehabilitation demonstrate modest benefits in pain relief and improved functioning of individuals. Spiritual care, covering the fourth dimension provides insight, inspires hope and purpose, and is thought to mediate mental and physical health for patients. This study explores the need for its inclusion in interdisciplinary pain rehabilitation and describes the requirements and test environment for evaluation. METHODS: Outcomes of spiritual care and interdisciplinary pain rehabilitation in follow-up studies of randomized controlled trials contained in systematic reviews were summarized. Pubmed, Cochrane, and PsycINFO were searched, citation tracking was applied, articles of follow-up studies therein were located. Literature was searched for insights pertaining to requirements for an assessment of including this fourth dimension. RESULTS: No systematic reviews for spiritual care were identified. Five systematic reviews of biopsychosocial rehabilitation containing 14 studies describing long-term outcomes were retrieved. The importance of coping in maintaining long-term outcomes was empirically illustrated. The required test environment is provided by a structured multidimensional care pathway separating spirituality from well-being and mental health, with measures of treatment outcome installed enabling a comparison with benchmarks. CONCLUSIONS: Active coping seems beneficial for maintaining positive long-term outcomes of interdisciplinary pain rehabilitation Spiritual care may be conducive to active coping. Further research is warranted to explore the additive value of this spiritual care in the context of a multidimensional care pathway.

The Musician as (In)Active Athlete?: Exploring the Association Between Physical Activity and Musculoskeletal Complaints in Music Students.

OBJECTIVE: Musicians are often compared to athletes because of the physical exertion required to play music. The aim of this study was to explore the physical activity level of music students and to study its relationship with musculoskeletal complaints. A second goal was to assess associations between physical activity and pain, quality of life, and disability. METHODS: This cross-sectional study among third- and fourth-year music students used an electronic survey including measures for physical activity (SQUASH-Short Questionnaire to Assess Health-enhancing physical activity), musculoskeletal complaints (DMQ-Dutch Musculoskeletal Questionnaire), disability (DASH-Disability Arm, Shoulder, Hand questionnaire) and quality of life (Short Form-12). Students were classified as compliers or non-compliers with moderate- and vigorous-intensity physical activity recommendations. Statistical analysis was done using (non)parametric tests (t-test, Pearson chi-square test, Mann-Whitney U-test) and correlational testing. RESULTS: Participants were 132 students, 63.6% female, with a median age of 23 yrs (range 21.3-25.0). 67% reported musculoskeletal complaints in the past 7 days. Their median physical activity level was 6,390 MET-min/wk, and 62% and 10% of the students accomplished recommendations for moderate-intensity and vigorous-intensity physical activity levels, respectively. No significant differences were found in prevalence of musculoskeletal complaints between students who met moderate- or vigorous-intensity physical activity recommendations and students who did not. Physical activity level was not associated with musculoskeletal complaints (r=0.12, p=0.26). Higher pain intensity was associated with a lower quality of life (r=-0.53 p<0.01) and higher disability (r=0.43, p<0.01). CONCLUSIONS: Music students are mainly involved in light- to moderate-intensity physical activities and rarely in vigorous-intensity activities. No correlation was found between physical activity level in the past months and musculoskeletal complaints in music students.

Arm hand skilled performance in cerebral palsy: activity preferences and their movement components.

BACKGROUND: Assessment of arm-hand use is very important in children with cerebral palsy (CP) who encounter arm-hand problems. To determine validity and reliability of new instruments to assess actual performance, a set of standardized test situations including activities of daily living (ADL) is required. This study gives information with which such a set for upper extremity skill research may be fine-tuned, relative to a specific research question. Aim of this study is to a) identify upper extremity related ADL children with CP want to improve on, b) determine the 10 most preferred goals of children with CP, and c) identify movement components of all goals identified. METHOD: The Canadian Occupational Performance Measure was used to identify upper extremity-related ADL preferences (goals) of 53 children with CP encountering arm-hand problems (mean age 9 ± 4.5 year). Goals were ranked based on importance attributed to each goal and the number of times a goal was mentioned, resulting in a gross list with goals. Additionally, two studies were performed, i.e. study A to determine the 10 most preferred goals for 3 age groups (2.5-5 years; 6-11 years, 12-19 years), based on the total preference score, and study B to identify movement components, like reaching and grasping, of all goals identified for both the leading and the assisting arm-hand. RESULTS: Seventy-two goals were identified. The 10 most preferred goals differed with age, changing from dressing and leisure-related goals in the youngest children to goals regarding personal care and eating for children aged 6-11 years. The oldest children preferred goals regarding eating, personal care and computer use. The movement components 'positioning', 'reach', 'grasp', and 'hold' were present in most tasks. 'Manipulating' was more important for the leading arm-hand, whereas 'fixating' was more important for the assisting arm-hand. CONCLUSION: This study gave insight into the preferences regarding ADL children with CP would like to improve on, and the movement components characterizing these activities. This information can be used to create a set of standardized test situations, which can be used to assess the validity and reliability of new measurement instruments to gauge actual arm-hand skilled performance.

Multidisciplinary biopsychosocial rehabilitation for chronic low back pain.

BACKGROUND: Low back pain (LBP) is responsible for considerable personal suffering worldwide. Those with persistent disabling symptoms also contribute to substantial costs to society via healthcare expenditure and reduced work productivity. While there are many treatment options, none are universally endorsed. The idea that chronic LBP is a condition best understood with reference to an interaction of physical, psychological and social influences, the 'biopsychosocial model', has received increasing acceptance. This has led to the development of multidisciplinary biopsychosocial rehabilitation (MBR) programs that target factors from the different domains, administered by healthcare professionals from different backgrounds. OBJECTIVES: To review the evidence on the effectiveness of MBR for patients with chronic LBP. The focus was on comparisons with usual care and with physical treatments measuring outcomes of pain, disability and work status, particularly in the long term. SEARCH METHODS: We searched the CENTRAL, MEDLINE, EMBASE, PsycINFO and CINAHL databases in January and March 2014 together with carrying out handsearches of the reference lists of included and related studies, forward citation tracking of included studies and screening of studies excluded in the previous version of this review. SELECTION CRITERIA: All studies identified in the searches were screened independently by two review authors; disagreements regarding inclusion were resolved by consensus. The inclusion criteria were published randomised controlled trials (RCTs) that included adults with non-specific LBP of longer than 12 weeks duration; the index intervention targeted at least two of physical, psychological and social or work-related factors; and the index intervention was delivered by clinicians from at least two different professional backgrounds. DATA COLLECTION AND ANALYSIS: Two review authors extracted and checked information to describe the included studies, assessed risk of bias and performed the analyses. We used the Cochrane risk of bias tool to describe the methodological quality. The primary outcomes were pain, disability and work status, divided into the short, medium and long term. Secondary outcomes were psychological functioning (for example depression, anxiety, catastrophising), healthcare service utilisation, quality of life and adverse events. We categorised the control interventions as usual care, physical treatment, surgery, or wait list for surgery in separate meta-analyses. The first two comparisons formed our primary focus. We performed meta-analyses using random-effects models and assessed the quality of evidence using the GRADE method. We performed sensitivity analyses to assess the influence of the methodological quality, and subgroup analyses to investigate the influence of baseline symptom severity and intervention intensity. MAIN RESULTS: From 6168 studies identified in the searches, 41 RCTs with a total of 6858 participants were included. Methodological quality ratings ranged from 1 to 9 out 12, and 13 of the 41 included studies were assessed as low risk of bias. Pooled estimates from 16 RCTs provided moderate to low quality evidence that MBR is more effective than usual care in reducing pain and disability, with standardised mean differences (SMDs) in the long term of 0.21 (95% CI 0.04 to 0.37) and 0.23 (95% CI 0.06 to 0.4) respectively. The range across all time points equated to approximately 0.5 to 1.4 units on a 0 to 10 numerical rating scale for pain and 1.4 to 2.5 points on the Roland Morris disability scale (0 to 24). There was moderate to low quality evidence of no difference on work outcomes (odds ratio (OR) at long term 1.04, 95% CI 0.73 to 1.47). Pooled estimates from 19 RCTs provided moderate to low quality evidence that MBR was more effective than physical treatment for pain and disability with SMDs in the long term of 0.51 (95% CI -0.01 to 1.04) and 0.68 (95% CI 0.16 to 1.19) respectively. Across all time points this translated to approximately 0.6 to 1.2 units on the pain scale and 1.2 to 4.0 points on the Roland Morris scale. There was moderate to low quality evidence of an effect on work outcomes (OR at long term 1.87, 95% CI 1.39 to 2.53). There was insufficient evidence to assess whether MBR interventions were associated with more adverse events than usual care or physical interventions.Sensitivity analyses did not suggest that the pooled estimates were unduly influenced by the results from low quality studies. Subgroup analyses were inconclusive regarding the influence of baseline symptom severity and intervention intensity. AUTHORS' CONCLUSIONS: Patients with chronic LBP receiving MBR are likely to experience less pain and disability than those receiving usual care or a physical treatment. MBR also has a positive influence on work status compared to physical treatment. Effects are of a modest magnitude and should be balanced against the time and resource requirements of MBR programs. More intensive interventions were not responsible for effects that were substantially different to those of less intensive interventions. While we were not able to determine if symptom intensity at presentation influenced the likelihood of success, it seems appropriate that only those people with indicators of significant psychosocial impact are referred to MBR.

Participation and social participation: are they distinct concepts?

INTRODUCTION: The concept of participation has been extensively used in health and social care literature since the World Health Organization introduced its description in the International Classification of Functioning, Disability and Health (ICF) in 2001. More recently, the concept of social participation is frequently used in research articles and policy reports. However, in the ICF, no specific definition exists for social participation, and an explanation of differences between the concepts is not available. AIM: The central question in this discussion article is whether participation, as defined by the ICF, and social participation are distinct concepts. This article illustrates the concepts of participation and social participation, presents a critical discussion of their definitions, followed by implications for rehabilitation and possible future directions. DISCUSSION: A clear definition for participation or social participation does not yet exist. Definitions for social participation differ from each other and are not sufficiently distinct from the ICF definition of participation. Although the ICF is regarded an important conceptual framework, it is criticised for not being comprehensive. The relevance of societal involvement of clients is evident for rehabilitation, but the current ICF definition of participation does not sufficiently capture societal involvement. CONCLUSION: Changing the ICF's definition of participation towards social roles would overcome a number of its shortcomings. Societal involvement would then be understood in the light of social roles. Consequently, there would be no need to make a distinction between social participation and participation.

Effects of task-oriented robot training on arm function, activity, and quality of life in chronic stroke patients: a randomized controlled trial.

BACKGROUND: Over fifty percent of stroke patients experience chronic arm hand performance problems, compromising independence in daily life activities and quality of life. Task-oriented training may improve arm hand performance after stroke, whereby augmented therapy may lead to a better treatment outcome. Technology-supported training holds opportunities for increasing training intensity. However, the effects of robot-supported task-oriented training with real life objects in stroke patients are not known to date. The aim of the present study was to investigate the effectiveness and added value of the Haptic Master robot combined with task-oriented arm hand training in chronic stroke patients. METHODS: In a single-blind randomized controlled trial, 22 chronic stroke patients were randomly allocated to receive either task-oriented robot-assisted arm-hand training (experimental group) or task-oriented non-robotic arm-hand training (control group). For training, the T-TOAT (Technology-supported Task-Oriented Arm Training) method was applied. Training was provided during 8 weeks, 4 times/week, 2 × 30 min/day. RESULTS: A significant improvement after training on the Action Research Arm Test (ARAT) was demonstrated in the experimental group (p = 0.008). Results were maintained until 6 months after cessation of the training. On the perceived performance measure (Motor Activity Log (MAL)), both, the experimental and control group improved significantly after training (control group p = 0.008; experimental group p = 0.013). The improvements on MAL in both groups were maintained until 6 months after cessation of the training. With regard to quality of life, only in the control group a significant improvement after training was found (EuroQol-5D p = 0.015, SF-36 physical p = 0.01). However, the improvement on SF-36 in the control group was not maintained (p = 0.012). No between-group differences could be demonstrated on any of the outcome measures. CONCLUSION: Arm hand performance improved in chronic stroke patients, after eight weeks of task oriented training. The use of a Haptic Master robot in support of task-oriented arm training did not show additional value over the video-instructed task-oriented exercises in highly functional stroke patients. CLINICAL TRIAL REGISTRATION INFORMATION: Current Controlled Trials ISRCTN82787126.

Does pain intensity after total knee arthroplasty depend on somatosensory functioning in knee osteoarthritis patients? A prospective cohort study.

The objective of this study is to determine whether the change in pain intensity over time differs between somatosensory functioning evolution profiles in knee osteoarthritis (KOA) patients undergoing total knee arthroplasty (TKA). This longitudinal prospective cohort study, conducted between March 2018 and July 2023, included KOA patients undergoing TKA in four hospitals in Belgium and the Netherlands. The evolution of the Knee Injury and Osteoarthritis Outcome Score (KOOS) subscale pain over time (baseline, 3 months, and 1 year post-TKA scores) was the outcome variable. The evolution scores of quantitative sensory testing (QST) and Central Sensitization Inventory (CSI) over time (baseline and 1 year post-TKA scores) were used to make subgroups. Participants were divided into separate normal, recovered, and persistent disturbed somatosensory subgroups based on the CSI, local and widespread pressure pain threshold [PPT] and heat allodynia, temporal summation [TS], and conditioned pain modulation [CPM]. Linear mixed model analyses were performed. Two hundred twenty-three participants were included. The persistent disturbed somatosensory functioning group had less pronounced pain improvement (based on CSI and local heat allodynia) and worse pain scores 1 year post-TKA (based on CSI, local PPT and heat allodynia, and TS) compared to the normal somatosensory functioning group. This persistent group also had worse pain scores 1 year post-TKA compared to the recovered group (based on CSI). The study suggests the presence of a "centrally driven central sensitization" subgroup in KOA patients awaiting TKA in four of seven grouping variables, comprising their less pain improvement or worse pain score after TKA. Future research should validate these findings further. The protocol is registered at clinicaltrials.gov (NCT05380648).

Unravelling relationships between obesity, diabetes, and factors related to somatosensory functioning in knee osteoarthritis patients.

OBJECTIVE: This study explores the association between obesity, diabetes, and somatosensory functioning in patients with knee osteoarthritis (OA), aiming to understand how metabolic conditions are related to pain mechanisms in this patient population. We hypothesized that higher body mass index (BMI), fat mass, and glycated hemoglobin levels (HbA1c) are associated with signs of altered somatosensory functioning. METHODS: A cross-sectional analysis was conducted as part of a larger multicentre prospective cohort study. Data were collected from patients awaiting total knee arthroplasty in Belgium and the Netherlands. Associations between BMI, fat mass, HbA1c, and various pain-related variables were examined employing Pearson and Spearman correlation analyses which were further analyzed with linear regression techniques. RESULTS: The study included 223 participants. Analysis revealed a significant although weak negative correlation between fat mass and pressure pain thresholds (PPT) at multiple locations, suggesting a link between higher fat mass and increased mechanical hyperalgesia. There were no significant correlations between BMI and pain-related outcomes. HbA1c levels showed very weak positive correlations with pain measures but did not withstand correction for multiple testing. CONCLUSION: The findings indicate that fat mass may be closely associated with altered somatosensory functioning in patients with knee OA. However, no significant correlations were found between BMI or HbA1c levels and pain-related outcomes. Future research should focus on longitudinal studies to elucidate the causal relationships and further explore the impact of metabolic factors on pain mechanisms in this patient population. Key Points • The findings indicate that fat mass may be closely associated with altered somatosensory functioning in patients with knee OA.

Preoperative spinal education for lumbar spinal stenosis: A feasibility study.

INTRODUCTION: Lumbar spinal stenosis (LSS) is a leading cause of chronic musculoskeletal pain among older adults. A common and costly intervention for the treatment of LSS is lumbar decompression with or without fusion (LSS surgery), which has mixed outcomes among patients. Prehabilitation is a strategy designed to optimize the consistency of positive surgical outcomes and promote patient self-efficacy, while attempting to mitigate postoperative complications. No efforts have investigated the prehabilitation strategies specifically for patients undergoing LSS surgery. OBJECTIVE: To determine the feasibility of delivery and acceptability by participants of a novel prehabilitation intervention for patients undergoing LSS surgery. DESIGN: Feasibility study. SETTING: Outpatient orthopedic clinic at an academic medical center. PARTICIPANTS: Patients at least 50 years of age, who were scheduled for LSS surgery between October 2020 and October 2021. INTERVENTION: PreOperative Spinal Education for Lumbar Spinal Stenosis (POSE-LSS), is a novel multimodal, education-focused, time-efficient prehabilitation program for patients undergoing LSS surgery. Participants received the following: (1) Educational booklet and video; (2) In-person physical therapy (PT) session; and (3) Telemedicine visit with a physiatrist. MAIN OUTCOME MEASURE(S): The primary outcomes of interest were feasibility and acceptability of intervention by participants. Key potential surgical outcomes were length of stay and discharge disposition. RESULTS: POSE-LSS was completed by all eligible participants enrolled (n = 15) indicating feasibility and acceptability. Potential effectiveness measures including length of stay and discharge disposition were positively associated with the POSE-LSS intervention. CONCLUSIONS: This study demonstrates that a novel prehabilitation intervention is feasible, acceptable, and appears positively associated with important short-term measures of postoperative recovery that may impact the trajectory of patient care following LSS surgery.

Gray Matter Adaptations to Chronic Pain in People with Whiplash-Associated Disorders are Partially Reversed After Treatment: A Voxel-based Morphometry Study.

Gray matter (GM) changes are often observed in people with chronic spinal pain, including those with chronic whiplash-associated disorders (CWAD). These GM adaptations may be reversed with treatment, at least partially. Pain neuroscience education combined with exercise (PNE+Exercise) is an effective treatment, but its neural underlying mechanisms still remain unexplored in CWAD. Here, we performed both cross-sectional and longitudinal voxel-based morphometry to 1) identify potential GM alterations in people with CWAD (n = 63) compared to age- and sex-matched pain-free controls (n = 32), and 2) determine whether these GM alterations might be reversed following PNE+Exercise (compared to conventional physiotherapy). The cross-sectional whole-brain analysis revealed that individuals with CWAD had less GM volume in the right and left dorsolateral prefrontal cortex and left inferior temporal gyrus which was, in turn, associated with higher pain vigilance. Fifty individuals with CWAD and 29 pain-free controls were retained in the longitudinal analysis. GM in the right dorsolateral prefrontal cortex increased after treatment in people with CWAD. Moreover, the longitudinal whole-brain analysis revealed that individuals with CWAD had decreases in GM volumes of the left and right central operculum and supramarginal after treatment. These changes were not specific to treatment modality and some were not observed in pain-free controls over time. Herewith, we provide the first evidence on how GM adaptations to CWAD respond to treatment. PERSPECTIVE: This article presents which gray matter adaptations are present in people with chronic pain after whiplash injuries. Then, we examine the treatment effect on these alterations as well as whether other neuroplastic effects on GM following treatment occur.