|
1
|
Aguilar-Rodríguez M, Dueñas L, Balasch i Bernat M, Meeus M, Struyf F, Lluch E. Conditioned Pain Modulation Is Not Impaired in Individuals with Frozen Shoulder: A Case-Control Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182312330. [PMID: 34886056 PMCID: PMC8656545 DOI: 10.3390/ijerph182312330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 11/11/2021] [Accepted: 11/20/2021] [Indexed: 11/16/2022]
Abstract
Frozen shoulder (FS) is a poorly understood condition resulting in substantial shoulder pain and mobility deficits. The mechanisms behind FS are not yet fully understood, but, similar to other persistent pain states, central pain mechanisms may contribute to ongoing symptoms in this population. The objective of this research was to investigate conditioned pain modulation (CPM) in people with FS compared with pain-free individuals. A total of 64 individuals with FS and 64 healthy volunteers participated in this cross-sectional study. CPM was assessed by using the pressure pain threshold (PPT) and an occlusion cuff (tourniquet test) as the test and conditioning stimulus, respectively. The absolute and percentage of change in PPT (CPM effect) as well as pain profiles (pro-nociceptive vs. anti-nociceptive) of individuals with FS and healthy controls were calculated. No significant differences in the absolute change in the PPT or CPM effect were found in people with FS compared to pain-free controls. Moreover, no between-group differences in the percentage of subjects with pro-nociceptive and anti-nociceptive pain profiles were observed. These results suggest that endogenous pain inhibition is normally functioning in people with FS. Altered central pain-processing mechanisms may thus not be a characteristic of this population.
Collapse
Affiliation(s)
- Marta Aguilar-Rodríguez
- Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain; (M.A.-R.); (M.B.i.B.); (E.L.)
| | - Lirios Dueñas
- Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain; (M.A.-R.); (M.B.i.B.); (E.L.)
- Physiotherapy in Motion, Multi Speciality Research Group (PTinMOTION), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
- Correspondence: ; Tel.: +34-963-983-853 (ext. 51264)
| | - Mercè Balasch i Bernat
- Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain; (M.A.-R.); (M.B.i.B.); (E.L.)
- Physiotherapy in Motion, Multi Speciality Research Group (PTinMOTION), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
| | - Mira Meeus
- Pain in Motion International Research Group, 2000 Antwerp, Belgium;
- Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, University of Antwerp, 2000 Antwerp, Belgium;
- Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Filip Struyf
- Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, University of Antwerp, 2000 Antwerp, Belgium;
| | - Enrique Lluch
- Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain; (M.A.-R.); (M.B.i.B.); (E.L.)
- Physiotherapy in Motion, Multi Speciality Research Group (PTinMOTION), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain
- Pain in Motion International Research Group, 2000 Antwerp, Belgium;
- Department of Physiotherapy, Human Physiology and Anatomy, Faculty of Physical Education & Physiotherapy, Vrije Universiteit Brussel, 1050 Brussels, Belgium
| |
Collapse
|
|
2
|
Munn Z, Barker TH, Moola S, Tufanaru C, Stern C, McArthur A, Stephenson M, Aromataris E. Methodological quality of case series studies: an introduction to the JBI critical appraisal tool. JBI Evid Synth 2021; 18:2127-2133. [PMID: 33038125 DOI: 10.11124/jbisrir-d-19-00099] [Citation(s) in RCA: 356] [Impact Index Per Article: 118.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Systematic reviews provide a rigorous synthesis of the best available evidence regarding a certain question. Where high-quality evidence is lacking, systematic reviewers may choose to rely on case series studies to provide information in relation to their question. However, to date there has been limited guidance on how to incorporate case series studies within systematic reviews assessing the effectiveness of an intervention, particularly with reference to assessing the methodological quality or risk of bias of these studies. METHODS An international working group was formed to review the methodological literature regarding case series as a form of evidence for inclusion in systematic reviews. The group then developed a critical appraisal tool based on the epidemiological literature relating to bias within these studies. This was then piloted, reviewed, and approved by JBI's international Scientific Committee. RESULTS The JBI critical appraisal tool for case series studies includes 10 questions addressing the internal validity and risk of bias of case series designs, particularly confounding, selection, and information bias, in addition to the importance of clear reporting. CONCLUSION In certain situations, case series designs may represent the best available evidence to inform clinical practice. The JBI critical appraisal tool for case series offers systematic reviewers an approved method to assess the methodological quality of these studies.
Collapse
Affiliation(s)
- Zachary Munn
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Timothy Hugh Barker
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Sandeep Moola
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia.,The George Institute for Global Health, Telangana, India
| | - Catalin Tufanaru
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia.,Australian Institute of Health Innovation, Faculty of Medicine and Health Sciences, Sydney, NSW, Australia
| | - Cindy Stern
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Alexa McArthur
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Matthew Stephenson
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Edoardo Aromataris
- JBI, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| |
Collapse
|