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The Effectiveness of Rehabilitation Interventions on Pain and Disability for Complex Regional Pain Syndrome: A Systematic Review and Meta-analysis. Clin J Pain 2023; 39:91-105. [PMID: 36650605 DOI: 10.1097/ajp.0000000000001089] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 11/22/2022] [Indexed: 01/19/2023]
Abstract
OBJECTIVES To summarize and critically appraise the body of evidence on conservative management of complex regional pain syndrome (CRPS), we conducted a systematic review and meta-analysis of randomized controlled trials (RCTs). METHODS We conducted a literature search from inception to November 2021 in the following databases: Embase, Medline, CINAHL, Google Scholar, PEDRO, and Psychinfo. Two independent reviewers conducted risk of bias and quality assessment. Qualitative synthesis and meta-analysis were the methods for summarizing the findings of the RCTs. The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach was used to rate the overall quality and certainty of the evidence on each treatment outcome. RESULT Through a database search, 751 records were found, and 33 RCTs were eligible for inclusion. Studies were published between 1995 and 2021. The overall risk of bias for 2 studies was low, 8 studies were unclear, and 23 studies were high.Low-quality evidence suggests that mirror therapy (as an addition to conventional stroke rehabilitation interventions) and graded motor imagery program (compared with routine rehabilitation interventions) may result in a large improvement in pain and disability up to 6-month follow-up in poststroke CRPS-1 patients. Low-quality evidence suggests that pain exposure therapy and aerobic exercises as an additive treatment to physical therapy interventions may result in a large improvement in pain up to a 6-month follow-up. The evidence is very uncertain about the effect of all other targeted interventions over conventional physical therapy or sham treatments on pain and disability. DISCUSSION There is an ongoing need for high-quality studies to inform conservative management choices in CRPS.
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Kavka T. Harmful or safe? Exposure and pain provocation during physiotherapy of complex regional pain syndrome I: a narrative review. J Back Musculoskelet Rehabil 2022; 36:565-576. [PMID: 36530077 DOI: 10.3233/bmr-220081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Complex regional pain syndrome (CRPS) is a clinical diagnosis and an umbrella term for a heterogeneous group of states associated with pain disproportionate to any inciting event, together with a number of signs and symptoms that are manifested mainly in the limbs. There are often concerns among clinicians and patients about the potential harms caused by pain provocation during physiotherapy of CRPS, even though clinical guidelines de-emphasize pain-contingency. OBJECTIVE The objective of this narrative review is to summarize current evidence regarding potential harms due to pain provocation during so-called exposure-based therapies in individuals with CRPS. METHODS Six studies evaluating exposure-based approach were included (n= 6). RESULTS Although only one included study focused primarily on safety and in the rest of the included studies the reporting of harms was insufficient and therefore our certainty in evidence is very low, taken together with outcome measures, available data does not point to any long-term deterioration in symptoms or function, or any major harms associated with pain provocation during physiotherapy of CRPS. CONCLUSION There is a great need for higher-quality studies to determine which therapeutic approach is the most appropriate for whom and to evaluate the risks and benefits of different approaches in more detail.
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Kryst J, Majcher-Maślanka I, Chocyk A. Effects of chronic fluoxetine treatment on anxiety- and depressive-like behaviors in adolescent rodents - systematic review and meta-analysis. Pharmacol Rep 2022; 74:920-946. [PMID: 36151445 PMCID: PMC9584991 DOI: 10.1007/s43440-022-00420-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/09/2022] [Accepted: 09/12/2022] [Indexed: 12/09/2022]
Abstract
Background Drugs prescribed for psychiatric disorders in adolescence should be studied very extensively since they can affect developing and thus highly plastic brain differently than they affect the adult brain. Therefore, we aimed to summarize animal studies reporting the behavioral consequences of chronic exposure to the most widely prescribed antidepressant drug among adolescents i.e., fluoxetine. Methods Electronic databases (Medline via Pubmed, Web of Science Core Collection, ScienceDirect) were systematically searched until April 12, 2022, for published, peer-reviewed, controlled trials concerning the effects of chronic fluoxetine administration vs. vehicle on anxiety and depression measures in naïve and stress-exposed adolescent rodents. All of the relevant studies were selected and critically appraised, and a meta-analysis of eligible studies was performed. Results A total of 18 studies were included in the meta-analysis. In naïve animals, chronic adolescent fluoxetine administration showed dose-related anxiogenic-like effects, measured as a reduction in time spent in the open arms of the elevated plus maze. No significant effects of chronic adolescent fluoxetine on depression-like behavior were reported in naïve animals, while in stress-exposed rodents chronic adolescent fluoxetine significantly decreased immobility time in the forced swim test compared to vehicle. Conclusions These results suggest that although chronic fluoxetine treatment proves positive effects in animal models of depression, it may simultaneously increase anxiety in adolescent animals in a dose-related manner. Although the clinical implications of the data should be interpreted with extreme caution, adolescent patients under fluoxetine treatment should be closely monitored. Supplementary Information The online version contains supplementary material available at 10.1007/s43440-022-00420-w.
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Affiliation(s)
- Joanna Kryst
- Faculty of Physiotherapy, Institute for Basics Sciences, University of Physical Education, Jana Pawła II Av. 78, 31-571, Kraków, Poland
| | - Iwona Majcher-Maślanka
- Department of Pharmacology, Laboratory of Pharmacology and Brain Biostructure, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland
| | - Agnieszka Chocyk
- Department of Pharmacology, Laboratory of Pharmacology and Brain Biostructure, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna Street 12, 31-343, Kraków, Poland.
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Bordeleau M, Vincenot M, Lefevre S, Duport A, Seggio L, Breton T, Lelard T, Serra E, Roussel N, Neves JFD, Léonard G. Treatments for kinesiophobia in people with chronic pain: A scoping review. Front Behav Neurosci 2022; 16:933483. [PMID: 36204486 PMCID: PMC9531655 DOI: 10.3389/fnbeh.2022.933483] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Kinesiophobia is associated with pain intensity in people suffering from chronic pain. The number of publications highlighting this relationship has increased significantly in recent years, emphasizing the importance of investigating and synthesizing research evidence on this topic. The purpose of this scoping review was to answer the following questions: (1) What types of interventions have been or are currently being studied in randomized controlled trials (RCTs) for the management of kinesiophobia in patients with chronic pain? (2) What chronic pain conditions are targeted by these interventions? (3) What assessment tools for kinesiophobia are used in these interventions? According to the studies reviewed, (1) physical exercise is the most commonly used approach for managing irrational fear of movement, (2) interventions for kinesiophobia have primarily focused on musculoskeletal pain conditions, particularly low back pain and neck pain, and (3) the Tampa Scale of Kinesiophobia is the most commonly used tool for measuring kinesiophobia. Future RCTs should consider multidisciplinary interventions that can help patients confront their irrational fear of movement while taking into account the patient’s personal biological, psychological, and social experiences with pain and kinesiophobia.
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Affiliation(s)
- Martine Bordeleau
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
- *Correspondence: Martine Bordeleau,
| | - Matthieu Vincenot
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Salomé Lefevre
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
- UR UPJV 3300 APERE Adaptation Physiologiques à l’Exercice et Réadaptation à l’Effort, Université de Picardie Jules Verne, Amiens, France
- Institut d’Ingénierie pour la Santé, UFR de Médecine, Université de Picardie Jules Verne, Amiens, France
| | - Arnaud Duport
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
- URePSSS – Unité de Recherche Pluridisciplinaire Sport, Santé, Société (ULR 7369), Université du Littoral Côte d’Opale, Université de Lille, Université d’Artois, Calais, France
| | - Lucas Seggio
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Tomy Breton
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Thierry Lelard
- UR UPJV 3300 APERE Adaptation Physiologiques à l’Exercice et Réadaptation à l’Effort, Université de Picardie Jules Verne, Amiens, France
- Institut d’Ingénierie pour la Santé, UFR de Médecine, Université de Picardie Jules Verne, Amiens, France
| | - Eric Serra
- Centre d’Etude et de Traitement de la Douleur, Center Hospitalier Universitaire Amiens-Picardie, Amiens, France
- Laboratoire PSITEC EA 4072, Université de Lille, Lille, France
| | - Nathalie Roussel
- Department of Rehabilitation Sciences and Physiotherapy (MOVANT), Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Jeremy Fonseca Das Neves
- Centre d’Etude et de Traitement de la Douleur, Center Hospitalier Universitaire Amiens-Picardie, Amiens, France
- Psychiatrie de Liaison, Center Hospitalier Universitaire Amiens-Picardie, Amiens, France
| | - Guillaume Léonard
- Research Centre on Aging, CIUSSS de l’Estrie – CHUS, Sherbrooke, QC, Canada
- School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, QC, Canada
- Guillaume Léonard,
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Smart KM, Ferraro MC, Wand BM, O'Connell NE. Physiotherapy for pain and disability in adults with complex regional pain syndrome (CRPS) types I and II. Cochrane Database Syst Rev 2022; 5:CD010853. [PMID: 35579382 PMCID: PMC9112661 DOI: 10.1002/14651858.cd010853.pub3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Complex regional pain syndrome (CRPS) is a painful and disabling condition that usually manifests in response to trauma or surgery and is associated with significant pain and disability. CRPS can be classified into two types: type I (CRPS I) in which a specific nerve lesion has not been identified and type II (CRPS II) where there is an identifiable nerve lesion. Guidelines recommend the inclusion of a variety of physiotherapy interventions as part of the multimodal treatment of people with CRPS. This is the first update of the review originally published in Issue 2, 2016. OBJECTIVES To determine the effectiveness of physiotherapy interventions for treating pain and disability associated with CRPS types I and II in adults. SEARCH METHODS For this update we searched CENTRAL (the Cochrane Library), MEDLINE, Embase, CINAHL, PsycINFO, LILACS, PEDro, Web of Science, DARE and Health Technology Assessments from February 2015 to July 2021 without language restrictions, we searched the reference lists of included studies and we contacted an expert in the field. We also searched additional online sources for unpublished trials and trials in progress. SELECTION CRITERIA We included randomised controlled trials (RCTs) of physiotherapy interventions compared with placebo, no treatment, another intervention or usual care, or other physiotherapy interventions in adults with CRPS I and II. Primary outcomes were pain intensity and disability. Secondary outcomes were composite scores for CRPS symptoms, health-related quality of life (HRQoL), patient global impression of change (PGIC) scales and adverse effects. DATA COLLECTION AND ANALYSIS Two review authors independently screened database searches for eligibility, extracted data, evaluated risk of bias and assessed the certainty of evidence using the GRADE system. MAIN RESULTS We included 16 new trials (600 participants) along with the 18 trials from the original review totalling 34 RCTs (1339 participants). Thirty-three trials included participants with CRPS I and one trial included participants with CRPS II. Included trials compared a diverse range of interventions including physical rehabilitation, electrotherapy modalities, cortically directed rehabilitation, electroacupuncture and exposure-based approaches. Most interventions were tested in small, single trials. Most were at high risk of bias overall (27 trials) and the remainder were at 'unclear' risk of bias (seven trials). For all comparisons and outcomes where we found evidence, we graded the certainty of the evidence as very low, downgraded due to serious study limitations, imprecision and inconsistency. Included trials rarely reported adverse effects. Physiotherapy compared with minimal care for adults with CRPS I One trial (135 participants) of multimodal physiotherapy, for which pain data were unavailable, found no between-group differences in pain intensity at 12-month follow-up. Multimodal physiotherapy demonstrated a small between-group improvement in disability at 12 months follow-up compared to an attention control (Impairment Level Sum score, 5 to 50 scale; mean difference (MD) -3.7, 95% confidence interval (CI) -7.13 to -0.27) (very low-certainty evidence). Equivalent data for pain were not available. Details regarding adverse events were not reported. Physiotherapy compared with minimal care for adults with CRPS II We did not find any trials of physiotherapy compared with minimal care for adults with CRPS II. AUTHORS' CONCLUSIONS The evidence is very uncertain about the effects of physiotherapy interventions on pain and disability in CRPS. This conclusion is similar to our 2016 review. Large-scale, high-quality RCTs with longer-term follow-up are required to test the effectiveness of physiotherapy-based interventions for treating pain and disability in adults with CRPS I and II.
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Affiliation(s)
- Keith M Smart
- UCD School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland
- Physiotherapy Department, St Vincent's University Hospital, Dublin, Ireland
| | - Michael C Ferraro
- Centre for Pain IMPACT, Neuroscience Research Australia, Sydney, Australia
- School of Health Sciences, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Benedict M Wand
- School of Physiotherapy, The University of Notre Dame Australia, Fremantle, Australia
| | - Neil E O'Connell
- Department of Health Sciences, Centre for Health and Wellbeing Across the Lifecourse, Brunel University London, Uxbridge, UK
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Kempert H. Clinical overlap of functional neurologic symptom disorder and complex regional pain syndrome in pediatrics: A case report. J Pediatr Rehabil Med 2021; 14:113-120. [PMID: 33720859 DOI: 10.3233/prm-200700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This case study documents a 13-year-old female who presented to our intensive inpatient chronic pain rehabilitation program with complex regional pain syndrome (CRPS) of her left leg, which was significantly interfering with her normal daily functioning. She participated in a full day of traditional interdisciplinary therapies, including physical and occupational therapy for 3 hours daily. As assistive equipment was altered or weaned her physical mobility, balance, and tremors worsened and/or increased. As she began advancing her legs more independently (versus requiring physical assist), she demonstrated more variable functional strength and stability, inconsistent balance reactions, and a more unsteady gait pattern. The team was treating her according to her incoming CRPS diagnosis; however, as treatment progressed, her physical and psychological presentation seemed more aligned with diagnostic criteria of functional neurologic symptom disorder (FND). Staff then treated according to the FND diagnosis resulting in successful long-term outcomes. The clinical impact from this case study includes highlighting the commonalities between CPRS and FND clinically, discussing treatment suggestions depending on the diagnosis, and emphasizing key components of family/patient education.
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Effect of Multi-Modal Therapies for Kinesiophobia Caused by Musculoskeletal Disorders: A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17249439. [PMID: 33339263 PMCID: PMC7766030 DOI: 10.3390/ijerph17249439] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 12/12/2022]
Abstract
This systematic review and meta-analysis aimed to identify the effect of multi-modal therapies that combined physical and psychological therapies for kinesiophobia caused by musculoskeletal disorders compared with uni-modal therapy of only phycological therapy or psychological therapy. The search terms and their logical connector were as following: (1) “kinesiophobia” at the title or abstract; and (2) “randomized” OR “randomized” at title or abstract; not (3) ”design” OR “protocol” at the title. They were typed into the databases of Medline (EBSCO), PubMed, and Ovid, following the different input rules of these databases. The eligibility criteria were: (1) Adults with musculoskeletal disorders or illness as patients; (2) Multi-modal therapies combined physical and psychological therapy as interventions; (3) Uni-modal therapy of only physical or psychological therapy as a comparison; (4) The scores of the 17-items version of the Tampa Scale of Kinesiophobia as the outcome; (5) Randomized controlled trials as study design. As a result, 12 studies were included with a statistically significant polled effect of 6.99 (95% CI 4.59 to 9.38). Despite a large heterogeneity within studies, multi-modal therapies might be more effective in reducing kinesiophobia than the unimodal of only physical or psychological therapy both in the total and subdivision analysis. The effect might decrease with age. What’s more, this review’s mathematical methods were feasible by taking test-retest reliability of the Tampa Scale of Kinesiophobia into consideration.
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Shaygan M, Böger A, Kröner-Herwig B. How does reduction in pain lead to reduction in disability in patients with musculoskeletal pain? J Pain Res 2019; 12:1879-1890. [PMID: 31354338 PMCID: PMC6580133 DOI: 10.2147/jpr.s197533] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 05/28/2019] [Indexed: 01/21/2023] Open
Abstract
Purpose Reduction in pain following multidisciplinary treatment is most often associated with a reduction in disability. To further elaborate the relationship between pain intensity and disability, the present study investigated three main questions: first, whether multidisciplinary treatment leads to a significant improvement in pain, disability and psychological variables (depression, pain acceptance and catastrophizing). Second, it was examined whether pain reduction may account for significant changes in the psychological variables (pre- to follow-up change scores). Finally, it was analyzed whether the psychological changes mediate the association between reduction in pain and in disability after controlling for age, sex and pain history. Patients and methods Patients suffering from chronic musculoskeletal pain (n=279) attended a German inpatient multidisciplinary program lasting 15 consecutive days on average, with self-report data collected at pretreatment, posttreatment and three-month follow-up. Results Repeated measures ANOVAs showed a significant improvement in pain intensity, disability, pain acceptance, catastrophizing and depression at posttreatment and follow-up. Univariate regression analyses revealed that changes in pain intensity accounted for significant changes in depression, pain catastrophizing and pain acceptance (pre- to follow-up change scores). The results of Multiple Mediation Procedure showed that pain reduction did affect reduction in disability through improvement of depression, catastrophizing and acceptance. Conclusion Our findings support a cognitive-behavioral model of pain that posits an important role for pain-related cognitive and emotional processes in long-term outcomes following multidisciplinary pain treatment, in particular for the modulation of disability due to pain. The results add evidence to the notion that pain-related cognitions are dynamic features varying over time dependent on the internal situation. Perspective The current findings are relevant to the management of patients with musculoskeletal pain. The results support the notion that, in contrast with the view of enduring personality traits, pain-related cognitions and emotions reflect a situational response that varies over time.
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Affiliation(s)
- Maryam Shaygan
- Community Based Psychiatric Care Research Centre, Faculty of Nursing and Midwifery, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Andreas Böger
- Pain Management Clinic at the Red Cross Hospital, Kassel, Germany
| | - Birgit Kröner-Herwig
- Department of Clinical Psychology and Psychotherapy, Georg-Elias-Müller-Institute of Psychology, Georg-August-University, Göttingen, Germany
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Pons T, Shipton EA, Williman J, Mulder RT. A proposed clinical conceptual model for the physiotherapy management of Complex Regional Pain Syndrome (CRPS). MUSCULOSKELETAL SCIENCE & PRACTICE 2018; 38:15-22. [PMID: 30216868 DOI: 10.1016/j.msksp.2018.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 08/22/2018] [Accepted: 08/31/2018] [Indexed: 10/28/2022]
Abstract
There are no validated clinical models to show a reliable pathway of guaranteeing an effective recovery for Complex Regional Pain Syndrome (CRPS) with physiotherapy management. An array of medical, psychological and physiotherapy intervention methods show weak benefit. Spearman correlations, with significance p < 0.05, from an observational, prospective, longitudinal, multi-centre study of regional standard physiotherapy CRPS management showed complete recovery to be potentially associated with baseline factors of: better mental health; better functional ability and quality of life; higher scores of extraversion personality trait; lower scores of intraversion personality trait; and interventions such as concurrent prescription of the anticonvulsant secondary analgesia group and a higher intensity of physiotherapy education intervention. These correlations were integrated with the literature evidence and the crux of previously suggested models to conceptualise a clinical model that can contribute to the broader knowledge of physiotherapy management in CRPS that should be tested with future research.
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Affiliation(s)
- Tracey Pons
- Department of Anaesthesia, University of Otago, Christchurch, Corner of Riccarton and Hagley Avenues, Christchurch 8042, New Zealand.
| | - Edward A Shipton
- Department of Anaesthesia, University of Otago, Christchurch, Corner of Riccarton and Hagley Avenues, Christchurch 8042, New Zealand.
| | - Jonathan Williman
- Biostatistics and Computation Biology Unit, University of Otago, Christchurch, Corner of Riccarton and Hagley Avenues, Christchurch 8042, New Zealand.
| | - Roger T Mulder
- Department of Psychological Medicine, University of Otago, Christchurch, Corner of Riccarton and Hagley Avenues, Christchurch 8042, New Zealand.
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Complex regional pain syndrome - phenotypic characteristics and potential biomarkers. Nat Rev Neurol 2018; 14:272-284. [PMID: 29545626 DOI: 10.1038/nrneurol.2018.20] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Complex regional pain syndrome (CRPS) is a pain condition that usually affects a single limb, often following an injury. The underlying pathophysiology seems to be complex and probably varies between patients. Clinical diagnosis is based on internationally agreed-upon criteria, which consider the reported symptoms, presence of signs and exclusion of alternative causes. Research into CRPS biomarkers to support patient stratification and improve diagnostic certainty is an important scientific focus, and recent progress in this area provides an opportunity for an up-to-date topical review of measurable disease-predictive, diagnostic and prognostic parameters. Clinical and biochemical attributes of CRPS that may aid diagnosis and determination of appropriate treatment are delineated. Findings that predict the development of CRPS and support the diagnosis include trauma-related factors, neurocognitive peculiarities, psychological markers, and local and systemic changes that indicate activation of the immune system. Analysis of signatures of non-coding microRNAs that could predict the treatment response represents a new line of research. Results from the past 5 years of CRPS research indicate that a single marker for CRPS will probably never be found; however, a range of biomarkers might assist in clinical diagnosis and guide prognosis and treatment.
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Resmini G, Ratti C, Canton G, Murena L, Moretti A, Iolascon G. Treatment of complex regional pain syndrome. CLINICAL CASES IN MINERAL AND BONE METABOLISM : THE OFFICIAL JOURNAL OF THE ITALIAN SOCIETY OF OSTEOPOROSIS, MINERAL METABOLISM, AND SKELETAL DISEASES 2015; 12:26-30. [PMID: 27134629 PMCID: PMC4832403 DOI: 10.11138/ccmbm/2015.12.3s.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Complex Regional Pain Syndrome (CRPS) is a multifactorial and disabling disorder with complex etiology and pathogenesis. Goals of therapy in CRPS should be pain relief, functional restoration, and psychological stabilization, but early interventions are needed in order to achieve these objectives. Several drugs have been used to reduce pain and to improve functional status in CRPS, despite the lack of scientific evidence supporting their use in this scenario. They include anti-inflammatory drugs, analgesics, anesthetics, anticonvulsants, antidepressants, oral muscle relaxants, corticosteroids, calcitonin, bisphosphonates, calcium channel blockers and topical agents. NSAIDs showed no value in treating CRPS. Glucocorticoids are the only anti-inflammatory drugs for which there is direct clinical trial evidence in early stage of CRPS. Opioids are a reasonable second or third-line treatment option, but tolerance and long term toxicity are unresolved issues. The use of anticonvulsants and tricyclic antidepressants has not been well investigated for pain management in CRPS. During the last years, bisphosphonates have been the mostly studied pharmacologic agents in CRPS treatment and there are good evidence to support their use in this condition. Recently, the efficacy of intravenous (IV) administration of neridronate has been reported in a randomized controlled trial. Significant improvements in VAS score and other indices of pain and quality of life in patients who received four 100 mg IV doses of neridronate versus placebo were reported. These findings were confirmed in the open-extension phase of the study, when patients formerly enrolled in the placebo group received neridronate at the same dosage, and these results were maintained at 1 year follow-up. The current literature concerning sympathetic blocks and sympathectomy techniques lacks evidence of efficacy. Low evidence was recorded for a free radical scavenger, dimethylsulphoxide (DMSO) cream (50%). The same level of efficacy was noted for vitamin C (500 mg per day for 50 days) in prevention of CRPS in patients affected by wrist fracture. In conclusion, the best available therapeutic approach to CRPS is multimodal and is based on the use of several classes of drugs, associated to early physiotherapy. Neridronate at appropriate doses is associated with clinically relevant and persistent benefits in CRPS patients.
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Affiliation(s)
- Giuseppina Resmini
- Centre for the Study of Osteoporosis and Metabolic Bone Disease, Section of Orthopaedic and Traumatology, Treviglio-Caravaggio Hospital, Bergamo, Italy
- Address for correspondence: Giuseppina Resmini, MD, Centre for the Study of Osteoporosis and Metabolic, Bone Disease, Section of Orthopaedic and Traumatology, Treviglio-Caravaggio Hospital, P.le Ospedale 1, 24047 Treviglio (BG), Italy, E-mail:
| | - Chiara Ratti
- Orthopaedic Clinic, University of Trieste, Trieste, Italy
| | | | - Luigi Murena
- Orthopaedic Clinic, University of Trieste, Trieste, Italy
| | - Antimo Moretti
- Department of Medical and Surgical Specialties and Dentistry, Second University of Naples, Naples, Italy
| | - Giovanni Iolascon
- Department of Medical and Surgical Specialties and Dentistry, Second University of Naples, Naples, Italy
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