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Wang X, Xu K, Zhang E, Bai Q, Ma B, Zhao C, Zhang K, Liu T, Ma Z, Zeng H, Zhou Y, Li Z. Irreversible Electroporation Improves Tendon Healing in a Rat Model of Collagenase-Induced Achilles Tendinopathy. Am J Sports Med 2023:3635465231167860. [PMID: 37129100 DOI: 10.1177/03635465231167860] [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: 05/03/2023]
Abstract
BACKGROUND Treatment of painful chronic tendinopathy is challenging, and there is an urgent need to develop new regenerative methods. Irreversible electroporation (IRE) can lead to localized cell ablation by electrical pulses and induce new cell and tissue growth. Previously, the authors' group reported that electroporation-ablated tendons fully regenerated. PURPOSE To assess the efficiency of IRE in improving tendon healing using a collagenase-induced Achilles tendinopathy rat model. STUDY DESIGN Controlled laboratory study. METHODS After screening for the IRE ablation parameters, a collagenase-induced Achilles tendinopathy rat model was used to assess the efficacy of IRE in improving tendon healing via biomechanical, behavioral, histological, and immunofluorescence assessments. RESULTS The experiments showed that the parameter of 875 V/cm 180 pulses could ablate most tenocytes, and apoptosis was the main type of death in vitro. In vivo, IRE promoted the healing process of chronic tendinopathy in the Achilles tendon of rats, based on biomechanical, behavioral, and histological assessments. Finally, immunofluorescence results revealed that IRE improved blood supply in the early stages of tendon repair and could potentially reduce neuropathic pain. CONCLUSION IRE enhanced tendon tissue healing in a rat model of collagenase-induced Achilles tendinopathy. CLINICAL RELEVANCE IRE may as a potential alternative treatment for tendinopathy in clinical usage.
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Affiliation(s)
- Xin Wang
- Department of Orthopedics, Orthopedic Oncology Institute of PLA, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
- Lintong Rehabilitation and Convalescent Centre of PLA Joint Logistics Support Force, Xi'an, Shaanxi, China
| | - Kui Xu
- Department of Orthopedics, Orthopedic Oncology Institute of PLA, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Eryang Zhang
- Department of Orthopedics, Yuncheng Center Hospital, Shanxi Medical University, Yuncheng, Shanxi, China
| | - Qian Bai
- The Hospital of 26th Base of PLA Strategic Support Force, Xi'an, Shaanxi, China
| | - Baoan Ma
- Department of Orthopedics, Orthopedic Oncology Institute of PLA, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - ChenGuang Zhao
- Department of Rehabilitation Medicine, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Kailiang Zhang
- Department of Orthopedics, the 960th Hospital of the PLA Joint Logistics Support Force, Jinan, Shandong, China
| | - Tao Liu
- Department of Orthopedics, Orthopedic Oncology Institute of PLA, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Zhouyong Ma
- Department of Orthopedics, Yuncheng Center Hospital, Shanxi Medical University, Yuncheng, Shanxi, China
| | - Hui Zeng
- Department of Orthopedics, Yuncheng Center Hospital, Shanxi Medical University, Yuncheng, Shanxi, China
| | - Yong Zhou
- Department of Orthopedics, Orthopedic Oncology Institute of PLA, Tangdu Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Zhao Li
- Department of Orthopedics, Yuncheng Center Hospital, Shanxi Medical University, Yuncheng, Shanxi, China
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Jahanian O, Van Straaten MG, Goodwin BM, Lennon RJ, Barlow JD, Murthy NS, Morrow MM. Shoulder magnetic resonance imaging findings in manual wheelchair users with spinal cord injury. J Spinal Cord Med 2022; 45:564-574. [PMID: 33166207 PMCID: PMC9246118 DOI: 10.1080/10790268.2020.1834774] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objective: To investigate the prevalence of rotator cuff and long head of the biceps pathologies in manual wheelchair (MWC) users with spinal cord injury (SCI).Design: Cross-sectional study.Setting: Outpatient clinic at a tertiary medical center.Participants: Forty-four adult MWC users with SCI (36 men and 8 women) with an average age (SD) of 42 (13) years. SCI levels ranged from C6 to L1; complete and incomplete SCI.Outcome Measures: Participants' demographic and anthropometric information, presence of shoulder pain, Wheelchair User's Pain Index (WUSPI) scores, and magnetic resonance imaging findings of shoulder pathologies including tendinopathy, tendon tears, and muscle atrophy.Results: Fifty-nine percent of the participants reported some shoulder pain. The prevalence of any tendinopathy across the rotator cuff and the long head of biceps tendon was 98%. The prevalence of tendinopathy in the supraspinatus was 86%, infraspinatus was 91%, subscapularis was 75%, and biceps was 57%. The majority of tendinopathies had mild or moderate severity. The prevalence of any tears was 68%. The prevalence of tendon tears in the supraspinatus was 48%, infraspinatus was 36%, subscapularis was 43%, and biceps was 12%. The majority of the tears were partial-thickness tears. Participants without tendon tears were significantly younger (P < 0.001) and had been wheelchair user for a significantly shorter time (P = 0.005) than those with tendon tears.Conclusion: Mild and moderate shoulder tendinopathy and partial-thickness tendon tears were highly prevalent in MWC users with SCI. Additionally, the findings of this study suggest that strategies for monitoring shoulder pathologies in this population should not be overly reliant on patient-reported pain, but perhaps more concerned with years of wheelchair use and age.
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Affiliation(s)
- Omid Jahanian
- Division of Health Care Policy and Research, Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA,Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, USA
| | - Meegan G. Van Straaten
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota, USA
| | - Brianna M. Goodwin
- Division of Health Care Policy and Research, Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA,Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, USA
| | - Ryan J. Lennon
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | - Jonathan D. Barlow
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Melissa M.B. Morrow
- Division of Health Care Policy and Research, Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA,Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota, USA,Correspondence to: Melissa M. B. Morrow, 200 First Street SW, Rochester, MN55905, USA.
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Elli S, Schiaffini G, Macchi M, Spezia M, Chisari E, Maffulli N. High-fat diet, adipokines and low-grade inflammation are associated with disrupted tendon healing: a systematic review of preclinical studies. Br Med Bull 2021; 138:126-143. [PMID: 34057461 DOI: 10.1093/bmb/ldab007] [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] [Accepted: 02/23/2021] [Indexed: 11/13/2022]
Abstract
BACKGROUND The aetiopathogenesis of tendinopathy is uncertain, but inflammation may play a role in the early phase of tendinopathy and in tendon healing response. We investigated the most up-to-date evidence about the association between obesity, high-fat diet and tendinopathy, focusing on the role of adipokines, inflammatory pathways and molecular changes. SOURCES OF DATA A systematic review was performed searching PubMed, Embase and Cochrane Library databases following the PRISMA guidelines. We included studies of any level of evidence published in peer-reviewed journals. The risk of bias (SIRCLE) was assessed, as was the methodological quality (CAMARADES) of the included studies. We excluded all the articles with a high risk of bias and/or low quality after the assessment. After applying the inclusion and exclusion criteria, we included 14 studies of medium or high quality. AREAS OF AGREEMENT A high-fat diet negatively affects tendon quality, increasing the risk of rupture and tendinopathy. AREAS OF CONTROVERSY Controversial evidence exists on both tendon fat infiltration secondary to a dysregulation of the lipid metabolism and of a molecular effect of inflammatory pathways. GROWING POINTS The secretion of adipokines is strictly related to fat ingestion and body composition and can potentially act on tendon physiology and injury. AREAS TIMELY FOR DEVELOPING RESEARCH Adipokines, low-grade inflammation and fat intake play a role in disrupting tendon healing and setting up tendinopathy. Further high-quality research is needed to better define the molecular pathways involved.
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Affiliation(s)
- Silvia Elli
- University of Milan, Via Festa del Perdono 7 - 20122 Milano, Italy
| | | | - Marina Macchi
- University of Milan, Via Festa del Perdono 7 - 20122 Milano, Italy
| | - Matteo Spezia
- University of Padua, Via 8 Febbraio, 2 - 35122 Padova, Italy
| | - Emanuele Chisari
- University of Catania, Piazza Università, 2 - 95131 Catania, Italy
| | - Nicola Maffulli
- Department of Musculoskeletal Disorders, School of Medicine and Surgery, University of Salerno, 84084 Fisciano, Italy.,Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London E1 4DG, UK.,Faculty of Medicine, School of Pharmacy and Bioengineering, Keele University, Stoke on Trent ST4 7QB, UK
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Supervised Training Compared With No Training or Self-training in Patients With Subacromial Pain Syndrome: A Systematic Review and Meta-analysis. Arch Phys Med Rehabil 2021; 102:2428-2441.e10. [PMID: 33930326 DOI: 10.1016/j.apmr.2021.03.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/28/2021] [Accepted: 03/29/2021] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To study the effects of supervised training in adults with subacromial pain syndrome. DATA SOURCES Embase, MEDLINE, Cochrane Library, Cumulative Index to Nursing and Allied Health, and Physiotherapy Evidence Database were searched from inception to March 2020. STUDY SELECTION Independent reviewers selected randomized controlled trials comparing supervised training with (1) no training or (2) self-training in adults with subacromial pain syndrome lasting for at least 1 month. Critical outcomes were shoulder pain, function, and patient-perceived effect. Important outcomes included other potential benefits and adverse events at 3-month follow-up. DATA EXTRACTION Two independent reviewers extracted data for the meta-analysis. Risk of bias was assessed using the Cochrane Risk of Bias tool 1, and certainty of evidence was evaluated using the Grades of Recommendation Assessment, Development, and Evaluation (GRADE). DATA SYNTHESIS Ten studies (n=597, 43% female) were included. Supervised training resulted in larger improvements than no training on pain (at rest: n=286; mean difference [MD], 1.68; 95% confidence interval [CI], 0.31-3.06 on 0-10 scale; during movement: n=353; MD, 1.84; 95% CI,0.91-2.76), function (n=396; standardized MD, 0.30; 95% CI, 0.07-0.52), and patient-perceived effect (n=118; risk ratio, 1.43; 95% CI, 0.87-2.34). Supervised training had potential benefits regarding quality of life, return to work, dropout, and training adherence, albeit more patients reported mild, transient pain after training. Supervised training and self-training showed equal improvements on pain (n=44) and function (n=76), with no data describing patient-perceived effect. Certainty of evidence was low for critical outcomes and low-moderate for other outcomes. CONCLUSIONS Supervised training might be superior to no training and equally effective as self-training on critical and important outcomes. Based on low-moderate certainty of evidence, these findings support a weak recommendation for supervised training in adults with subacromial pain syndrome.
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Goodwin BM, Jahanian O, Cain SM, Van Straaten MG, Fortune E, Morrow MM. Duration of Static and Dynamic Periods of the Upper Arm During Daily Life of Manual Wheelchair Users and Matched Able-Bodied Participants: A Preliminary Report. Front Sports Act Living 2021; 3:603020. [PMID: 33842878 PMCID: PMC8034231 DOI: 10.3389/fspor.2021.603020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 02/18/2021] [Indexed: 12/17/2022] Open
Abstract
Background: Manual wheelchair (MWC) users with spinal cord injuries (SCI) are at a significantly higher risk of experiencing rotator cuff pathology than able-bodied individuals. A deeper understanding of where the arm is used dynamically within the humeral workspace during daily life may help explain why MWC users have higher shoulder pathology rates than able-bodied individuals. The purpose of this study was to report the daily percentage and consecutive durations MWC users and matched able-bodied individuals (controls) spent static and dynamic across the humeral elevation workspace. Methods: MWC users with SCI and controls wore three inertial measurement units on their bilateral arms and torso for 1 or 2 days. The percentages of time and average consecutive duration individuals were static or dynamic while in five humeral elevation ranges (0-30°, 30-60°, 60-90°, 90-120°, and >120°) were calculated and compared between cohorts. Results: Forty-four MWC users (10 females, age: 42.8 ± 12.0, time since injury: 12.3 ± 11.5) and 44 age- and sex-matched controls were enrolled. The MWC cohort spent significantly more time dynamic in 60-90° (p = 0.039) and 90-120° (p = 0.029) and had longer consecutive dynamic periods in 30-60° (p = 0.001), 60-90° (p = 0.027), and 90-120° (p = 0.043) on the dominant arm. The controls spent significantly more time dynamic in 0-30° of humeral elevation (p < 0.001) on both arms. Although the average consecutive static durations were comparable between cohorts across all humeral elevation ranges, the MWC cohort spent a significantly higher percentage of their day static in 30-60° of humeral elevation than controls (dominant: p = 0.001, non-dominant: p = 0.01). The MWC cohort had a moderate association of increased age with decreased time dynamic in 30-60° for both arms. Discussion: Remote data capture of arm use during daily life can aid in understanding how arm function relates to shoulder pathology that follows SCI and subsequent MWC use. MWC users spent more time dynamic in higher elevations than controls, and with age, dynamic arm use decreased in the 30-60° humeral elevation range. These results may exemplify effects of performing activities from a seated position and of age on mobility.
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Affiliation(s)
- Brianna M. Goodwin
- Division of Health Care Delivery Research, Mayo Clinic, Rochester, MN, United States
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, United States
| | - Omid Jahanian
- Division of Health Care Delivery Research, Mayo Clinic, Rochester, MN, United States
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, United States
| | - Stephen M. Cain
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Meegan G. Van Straaten
- Division of Health Care Delivery Research, Mayo Clinic, Rochester, MN, United States
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, United States
- Assistive and Restorative Technology Laboratory, Rehabilitation Medicine Research Center, Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, United States
| | - Emma Fortune
- Division of Health Care Delivery Research, Mayo Clinic, Rochester, MN, United States
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, United States
| | - Melissa M. Morrow
- Division of Health Care Delivery Research, Mayo Clinic, Rochester, MN, United States
- Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, United States
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Matthews W, Ellis R, Furness JW, Rathbone E, Hing W. Staging achilles tendinopathy using ultrasound imaging: the development and investigation of a new ultrasound imaging criteria based on the continuum model of tendon pathology. BMJ Open Sport Exerc Med 2020; 6:e000699. [PMID: 32341798 PMCID: PMC7173997 DOI: 10.1136/bmjsem-2019-000699] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2020] [Indexed: 12/04/2022] Open
Abstract
Aim To develop a standardised ultrasound imaging (USI)-based criteria for the diagnosis of tendinopathy that aligns with the continuum model of tendon pathology. Secondary aims were to assess both the intra-rater and inter-rater reliability of the criteria. Methods A criteria was developed following a face validity assessment and a total of 31 Achilles tendon ultrasound images were analysed. Intra-rater and inter-rater reliability were assessed for overall tendinopathy stage (normal, reactive/early dysrepair or late dysrepair/degenerative) as well as for individual parameters (thickness, echogenicity and vascularity). Quadratic weighted kappa (kw) was used to report on reliability. Results Intra-rater reliability was ‘substantial’ for overall tendinopathy staging (kw rater A; 0.77, 95% CI 0.59 to 0.94, rater B; 0.70, 95% CI 0.52 to 0.89) and ranged from ‘substantial’ to ‘almost perfect’ for thickness (kw rater A; 0.75, 95% CI 0.59 to 0.90, rater B; 0.84, 95% CI 0.71 to 0.98), echogenicity (kw rater A; 0.78, 95% CI 0.62 to 0.95, rater B; 0.73, 95% CI 0.58 to 0.89) and vascularity (kw rater A; 0.86, 95% CI 0.74 to 0.98, rater B; 0.89, 95% CI 0.79 to 0.99). Inter-rater reliability ranged from ‘substantial’ to ‘almost perfect’ for overall tendinopathy staging (kw round 1; 0.75, 95% CI 0.58 to 0.91, round 2; 0.81, 95% CI 0.63 to 0.99), thickness (kw round 1; 0.65, 95% CI 0.48 to 0.83, round 2; 0.77, 95% CI 0.60 to 0.93), echogenicity (kw round 1; 0.70, 95% CI 0.54 to 0.85, round 2; 0.76, 95% CI 0.58 to 0.94) and vascularity (kw round 1; 0.89, 95% CI 0.79 to 0.99, round 2; 0.86, 95% CI 0.74 to 0.98). Inter-rater reliability increased from ‘substantial’ in round 1 (kw 0.75, 95% CI 0.58 to 0.91) to ‘almost perfect’ in round 2 (0.81, 95% CI 0.63 to 0.99). Conclusion Intra-rater and inter-rater reliability were ‘substantial’ to ‘almost perfect’ when utilising an USI-based criteria to diagnose Achilles tendinopathy. This is the first study to use the continuum model of tendon pathology to develop an USI-based criteria to diagnose tendinopathy.
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Affiliation(s)
- Wesley Matthews
- Bond Institute of Health and Sport, Bond University Faculty of Health Sciences and Medicine, Gold Coast, Queensland, Australia
| | - Richard Ellis
- Active Living and Rehabilitation: Aotearoa New Zealand, Health and Rehabilitation Research Institute, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand.,Department of Physiotherapy, School of Clinical Sciences, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - James W Furness
- Bond Institute of Health and Sport, Bond University Faculty of Health Sciences and Medicine, Gold Coast, Queensland, Australia
| | - Evelyne Rathbone
- Bond University Faculty of Health Sciences and Medicine, Gold Coast, Queensland, Australia
| | - Wayne Hing
- Bond Institute of Health and Sport, Bond University Faculty of Health Sciences and Medicine, Gold Coast, Queensland, Australia
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An Update of Systematic Reviews Examining the Effectiveness of Conservative Physical Therapy Interventions for Subacromial Shoulder Pain. J Orthop Sports Phys Ther 2020; 50:131-141. [PMID: 31726927 DOI: 10.2519/jospt.2020.8498] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To update a systematic review published in 2013 that focused on evaluating the effectiveness of interventions within the scope of physical therapy, including exercise, manual therapy, electrotherapy, and combined or multimodal approaches to managing shoulder pain. DESIGN Umbrella review. LITERATURE SEARCH An electronic search of PubMed, Web of Science, and CINAHL was undertaken. Methodological quality was assessed using the AMSTAR (A MeaSurement Tool to Assess systematic Reviews) checklist for systematic reviews. STUDY SELECTION CRITERIA Nonsurgical treatments for subacromial shoulder pain. DATA SYNTHESIS Sixteen systematic reviews were retrieved. Results were summarized qualitatively. RESULTS A strong recommendation can be made for exercise therapy as the first-line treatment to improve pain, mobility, and function in patients with subacromial shoulder pain. Manual therapy may be integrated, with a strong recommendation, as additional therapy. There was moderate evidence of no effect for other commonly prescribed interventions, such as laser therapy, extracorporeal shockwave therapy, pulsed electromagnetic energy, and ultrasound. CONCLUSION There is a growing body of evidence to support exercise therapy as an intervention for subacromial shoulder pain. Ongoing research is required to provide guidance on exercise type, dose, duration, and expected outcomes. A strong recommendation may be made regarding the inclusion of manual therapy in the initial treatment phase. J Orthop Sports Phys Ther 2020;50(3):131-141. Epub 15 Nov 2019. doi:10.2519/jospt.2020.8498.
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Wunderli SL, Blache U, Snedeker JG. Tendon explant models for physiologically relevant invitro study of tissue biology - a perspective. Connect Tissue Res 2020; 61:262-277. [PMID: 31931633 DOI: 10.1080/03008207.2019.1700962] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Background: Tendon disorders increasingly afflict our aging society but we lack the scientific understanding to clinically address them. Clinically relevant models of tendon disease are urgently needed as established small animal models of tendinopathy fail to capture essential aspects of the disease. Two-dimensional and three-dimensional cell and tissue culture models are similarly limited, lacking many physiological extracellular matrix cues required to maintain tissue homeostasis or guide matrix remodeling. These cues reflect the biochemical and biomechanical status of the tissue, and encode information regarding the mechanical and metabolic competence of the tissue. Tendon explants overcome some of these limitations and have thus emerged as a valuable tool for the discovery and study of mechanisms associated with tendon homeostasis and pathophysiology. Tendon explants retain native cell-cell and cell-matrix connections, while allowing highly reproducible experimental control over extrinsic factors like mechanical loading and nutritional availability. In this sense tendon explant models can deliver insights that are otherwise impossible to obtain from in vivo animal or in vitro cell culture models. Purpose: In this review, we aimed to provide an overview of tissue explant models used in tendon research, with a specific focus on the value of explant culture systems for the controlled study of the tendon core tissue. We discuss their advantages, limitations and potential future utility. We include suggestions and technical recommendations for the successful use of tendon explant cultures and conclude with an outlook on how explant models may be leveraged with state-of-the-art biotechnologies to propel our understanding of tendon physiology and pathology.
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Affiliation(s)
- Stefania L Wunderli
- University Hospital Balgrist, University of Zurich, Zurich, Switzerland.,Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Ulrich Blache
- University Hospital Balgrist, University of Zurich, Zurich, Switzerland.,Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Jess G Snedeker
- University Hospital Balgrist, University of Zurich, Zurich, Switzerland.,Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
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Morgan G, Martin R, Welch H, Williams L, Morris K. Objective assessment of stiffness in the gastrocnemius muscle in patients with symptomatic Achilles tendons. BMJ Open Sport Exerc Med 2019; 5:e000622. [PMID: 31749983 PMCID: PMC6830464 DOI: 10.1136/bmjsem-2019-000622] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2019] [Indexed: 12/14/2022] Open
Abstract
Objectives To establish quantitative values of stiffness for the gastrocnemius muscle in patients diagnosed with Achilles tendinopathy. Design Case–control study with a single (cross sectional) time point of patients diagnosed with unilateral Achilles tendinopathy and an asymptomatic group. Methods Sample of 50 participants: 25 participants with symptomatic unilateral Achilles tendinopathy (symptomatic group) with the asymptomatic side of this group used as a control (control group 1). A third group of 25 participants with asymptomatic Achilles tendons (control group 2). Mechanical stiffness parameters, including natural oscillation frequency (F), dynamic stiffness (S), mechanical stress relaxation time (R), logarithmic decrement (D) and creep (C), were assessed using the MyotonPRO. Measurements at the medial and lateral gastrocnemii were taken as non-weight bearing (NWB) and weight bearing (WB). Results Significant (p<0.05) differences were observed between the mean symptomatic group and control groups 1 and 2 in the WB and NWB conditions for natural oscillation frequency (F), dynamic stiffness (S), and creep (C). There was a significant reduction in S WB and conversely a significant increase in S of the symptomatic group NWB. Creep (C) and mechanical stress relaxation time (R) were significantly (p<0.05) less in the symptomatic group NWB. Significant differences were observed between the NWB and WB data sets for logarithmic decrement (D). NWB D demonstrated significantly (p<0.05) higher scores than the WB condition. Conclusion This study demonstrated that there was a significant reduction in stiffness of the gastrocnemius muscle in participants with Achilles tendinopathy compared with the two control groups. The WB MyotonPRO measures for the symptomatic groups of F and S were significantly lower, indicating a decrease in the tonal properties (F) and dynamic stiffness (S) of the muscle. The application of MyotonPRO technology to measure changes in stiffness in the gastrocnemius muscle may be useful to measure as part of a rehabilitation programme where specific attention could be placed to increase the tonal properties of the muscle. Further studies are required to develop a robust clinical application of this technology, particularly with regard to Achilles tendinopathy.
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Affiliation(s)
- Gafin Morgan
- Podiatry, Cwm Taf Morgannwg University Health Board, Abercynon, UK
| | - Rhodri Martin
- Cwm Taf Morgannwg University Health Board, Abercynon, UK
| | - Helen Welch
- Cwm Taf Morgannwg University Health Board, Abercynon, UK
| | - Lisa Williams
- Orthopaedics, Cwm Taf Morgannwg University Health Board, Abercynon, UK
| | - Keith Morris
- Biomedical Sciences, Cardiff Metropolitan University, Cardiff, UK
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Matthews W, Ellis R, Furness J, Hing W. Classification of Tendon Matrix Change Using Ultrasound Imaging: A Systematic Review and Meta-analysis. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:2059-2080. [PMID: 30007477 DOI: 10.1016/j.ultrasmedbio.2018.05.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 05/17/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
Ultrasound imaging (US) is an accurate and reliable method used to diagnose tendinopathy. This systematic review was aimed at identifying common criteria and parameters used to diagnose tendinopathy, the methodological quality of studies and the predictive value of US. Nineteen studies met the inclusion criteria, with the Achilles, quadriceps and patella tendons being investigated. Overall, there was significant heterogeneity between the criteria used to diagnose tendinopathy utilising US. The methodological quality of included studies was "good." Additionally, meta-analysis revealed that US-identified abnormalities were predictive of future symptoms, and classification of tendinopathy using three US defined parameters indicated a higher relative risk of developing clinical tendinopathy compared with the use of two US-defined parameters. Further research into the development of a standardised US criterion that incorporates both clinical and US findings is required to allow for greater consistency in the diagnosis of tendinopathy.
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Affiliation(s)
- Wesley Matthews
- Bond Institute of Health and Sport, Faculty of Health Sciences and Medicine, Bond University, Robina, Gold Coast, Queensland, Australia.
| | - Richard Ellis
- Health and Rehabilitation Research Institute, School of Clinical Sciences, Auckland University of Technology, Auckland, New Zealand
| | - James Furness
- Bond Institute of Health and Sport, Faculty of Health Sciences and Medicine, Bond University, Robina, Gold Coast, Queensland, Australia
| | - Wayne Hing
- Bond Institute of Health and Sport, Faculty of Health Sciences and Medicine, Bond University, Robina, Gold Coast, Queensland, Australia
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Morgan S, Coetzee FF. Proposing a Patellar Tendinopathy Screening tool following a systematic review. SOUTH AFRICAN JOURNAL OF PHYSIOTHERAPY 2018; 74:454. [PMID: 30349877 PMCID: PMC6191685 DOI: 10.4102/sajp.v74i1.454] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 07/31/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Patellar tendinopathy (PT) is an overuse injury of the knee. The mechanism of injury is associated with repetitive stress on the patellar tendon of the knee as a result of explosive movement. Patellar tendinopathy is prevalent in all populations and is associated with intrinsic and extrinsic risk factors. OBJECTIVES Primarily, the objective was to report on the intrinsic and extrinsic risk factors for PT, entailing a systematic review of the literature; the secondary objective was to use these risk factors to compile a proposed PT screening tool from the review and standard outcome measures. METHOD A systematic review was undertaken according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Elimination criteria of the articles included duplicates, titles, abstracts and methodological quality. The evidence was collected, characterised with regard to the intrinsic and extrinsic risk factors and summarised descriptively. RESULTS The search yielded 157 feasible articles prior to commencement of article elimination. Six articles were included with a mean methodological quality score of 69%. Eight intrinsic and five extrinsic risk factors were identified. These identified risk factors are all relevant to the pathology and formed the basis for a proposed PT screening tool. The Victorian Institute of Sports Assessment for Patellar Tendinopathy Questionnaire, Visual Analog Scale and the Pain Provocation Test are also included in the proposed test. CONCLUSION Intrinsic and extrinsic risk factors for PT were identified, and consequently, the proposed PT screening tool was formulated for possible future testing in appropriate studies. CLINICAL IMPLICATIONS Prevention of PT through intrinsic and extrinsic risk factor identification, and implementation in the clinical setup as a possible outcome measurement tool with which to verify functional improvement in PT rehabilitation.
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Affiliation(s)
- Sanell Morgan
- Department of Physiotherapy, University of the Free State, South Africa
| | - Frederik F. Coetzee
- Department of Exercise and Sport Sciences, University of the Free State, South Africa
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Choi R, Smith M, Clarke E, Little C. Cellular, matrix, and mechano-biological differences in load-bearing versus positional tendons throughout development and aging: a narrative review. Connect Tissue Res 2018; 59:483-494. [PMID: 30231648 DOI: 10.1080/03008207.2018.1504929] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE Summarise available evidence comparing the cellular, biochemical, structural and biomechanical properties, and the changes that occur in these parameters in response to stimuli, in differentially loaded tendons across different stages of life. METHODS The PubMed database was searched for literature pertaining to differences between tendons using the term "tendon" or "tendinopathy", plus one or more of the following descriptors: "loading", "positional", "weight- or load-bearing", and "energy-storing". The abstracts were reviewed and relevant full-length articles retrieved and used to assemble a narrative review. RESULTS The incidence and prevalence of tendon disorders ("tendinopathies") is increasing in Western societies, with limited evidence that currently available treatments have any significant long-term effect on the disease course. A key emerging hypothesis is that disease in different tendons and even different regions within a tendon may be distinct. The available literature indicates that there are phenotypic differences, not only in the constitutive compositional and material properties but also in resident cells of positional compared with load-bearing tendons. Evident during early tendon growth, such differences have become well established by adulthood. CONCLUSIONS The pheno-endotype of tendinopathy may be distinct between load-bearing tendons compared to positional tendons, which has translational implications with regard to preventing and managing tendinopathy. Better understanding of the molecular, cellular, and biomechanical pathophysiology underlying disease phenotypes, will allow more targeted/personalised treatment and therefore improve outcomes.
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Affiliation(s)
- Rachel Choi
- a Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research and Kolling Institute, Sydney Medical School , University of Sydney, at Royal North Shore Hospital , St Leonards , Australia.,b Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research and Kolling Institute, Sydney Medical School , University of Sydney, at Royal North Shore Hospital , St Leonards , Australia
| | - Margaret Smith
- a Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research and Kolling Institute, Sydney Medical School , University of Sydney, at Royal North Shore Hospital , St Leonards , Australia
| | - Elizabeth Clarke
- b Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research and Kolling Institute, Sydney Medical School , University of Sydney, at Royal North Shore Hospital , St Leonards , Australia
| | - Christopher Little
- a Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research and Kolling Institute, Sydney Medical School , University of Sydney, at Royal North Shore Hospital , St Leonards , Australia
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Bleichert S, Renaud G, MacDermid J, Watson L, Faber K, Lenssen R, Saulnier M, Phillips P, Evans T, Sadi J. Rehabilitation of symptomatic atraumatic degenerative rotator cuff tears: A clinical commentary on assessment and management. J Hand Ther 2018. [PMID: 28641732 DOI: 10.1016/j.jht.2017.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
STUDY DESIGN Clinical Commentary. INTRODUCTION Atraumatic rotator cuff (RC) disease, is one of the most common cause of shoulder pain, which encompasses a continuum from tendinopathy to full thickness cuff tears. Extrinsic, intrinsic and environmental factors have been implicated in the pathophysiology of this disorder, affecting the clinical presentation of symptoms including pain and irritability. Successful rehabilitation of symptomatic atraumatic degenerative rotator cuff (SADRC) tears must address the underlying mechanisms causing dysfunction and correct modifiable factors. PURPOSE OF THE STUDY The purpose of this paper is to review the shoulder complex anatomy, introduce atraumatic degenerative RC pathology, differentiate between symptomatic and asymptomatic degenerative RC tears, propose an assessment and introduce the Rotator Cuff Protocol 1 (RCP1) designed by the clinical reasoning of one of the lead authors (LW) as a rehabilitation management approach for those clients who present with SADRC tears. METHODS/RESULTS/DISCUSSION N/A for clinical commentary. CONCLUSIONS The ability to identify SADRC tears should consider shoulder anatomy, extrinsic, intrinsic and environmental factors, and the consideration for the natural history of atraumatic partial and full thickness tears in the general population. A thorough clinical history and examination, which includes shoulder symptom modification tests, allows the examiner to determine at what phase the patient may start their exercise program. The RCP1 is a program that has been used clinically by many therapists and clients over the years and research is underway to test this protocol in atraumatic rotator cuff disease including SADRC tears. LEVEL OF EVIDENCE 5.
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Affiliation(s)
- Sarah Bleichert
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Genevieve Renaud
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Joy MacDermid
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Lyn Watson
- LifeCare Prahran Sports Medicine Centre and Melbourne Orthopaedic Group, Melbourne, Australia
| | - Ken Faber
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Ross Lenssen
- LifeCare Prahran Sports Medicine Centre and Melbourne Orthopaedic Group, Melbourne, Australia
| | - Marie Saulnier
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Paul Phillips
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Tyler Evans
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada
| | - Jackie Sadi
- School of Physical Therapy, Faculty of Health Sciences, Western University, London, Ontario, Canada.
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Novel animal model for Achilles tendinopathy: Controlled experimental study of serial injections of collagenase in rabbits. PLoS One 2018; 13:e0192769. [PMID: 29438431 PMCID: PMC5811024 DOI: 10.1371/journal.pone.0192769] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 01/30/2018] [Indexed: 11/19/2022] Open
Abstract
Our goal was to develop a novel technique for inducing Achilles tendinopathy in animal models which more accurately represents the progressive histological and biomechanical characteristic of chronic Achilles tendinopathy in humans. In this animal research study, forty-five rabbits were randomly assigned to three groups and given bilateral Achilles injections. Low dose (LD group) (n = 18) underwent a novel technique with three low-dose (0.1mg) injections of collagenase that were separated by two weeks, the high dose group (HD) (n = 18) underwent traditional single high-dose (0.3mg) injections, and the third group were controls (n = 9). Six rabbits were sacrificed from each experimental group (LD and HD) at 10, 12 and 16 weeks. Control animals were sacrificed after 16 weeks. Histological and biomechanical properties were then compared in all three groups. At 10 weeks, Bonar score and tendon cross sectional area was highest in HD group, with impaired biomechanical properties compared to LD group. At 12 weeks, Bonar score was higher in LD group, with similar biomechanical findings when compared to HD group. After 16 weeks, Bonar score was significantly increased for both LD group (11,8±2,28) and HD group (5,6±2,51), when compared to controls (2±0,76). LD group showed more pronounced histological and biomechanical findings, including cross sectional area of the tendon, Young’s modulus, yield stress and ultimate tensile strength. In conclusion, Achilles tendinopathy in animal models that were induced by serial injections of low-dose collagenase showed more pronounced histological and biomechanical findings after 16 weeks than traditional techniques, mimicking better the progressive and chronic characteristic of the tendinopathy in humans.
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Kinsella R, Cowan SM, Watson L, Pizzari T. A comparison of isometric, isotonic concentric and isotonic eccentric exercises in the physiotherapy management of subacromial pain syndrome/rotator cuff tendinopathy: study protocol for a pilot randomised controlled trial. Pilot Feasibility Stud 2017; 3:45. [PMID: 29163981 PMCID: PMC5684744 DOI: 10.1186/s40814-017-0190-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 09/26/2017] [Indexed: 01/10/2023] Open
Abstract
Background Subacromial pain syndrome (SPS) involving rotator cuff tendinopathy is a common cause of shoulder pain and disability. Evidence suggests that structured physiotherapy may be as effective as surgery in this condition with significant improvements demonstrated in trials involving scapular retraining, rotator cuff strengthening and flexibility exercises. Most published programs typically utilise isotonic concentric and/or eccentric strengthening modes. Recently, immediate analgesic effects and muscle strength gains following heavy-load isometric exercises in lower limb tendinopathy conditions have been observed. It is pertinent to ascertain whether such outcomes can be replicated in SPS/rotator cuff tendinopathy. The primary aim of this study is to establish the feasibility of undertaking a full-scale randomised controlled trial (RCT) that compares the effects of isometric, isotonic concentric and isotonic eccentric rotator cuff contractions when used as part of a semi-standardised exercise-based physiotherapy program in patients diagnosed with SPS. The secondary aim is to explore potential trends or treatment effects of the exercise intervention. Methods Thirty-six participants diagnosed with SPS will be randomised to one of three intervention groups and undergo a one-on-one exercise-based physiotherapy intervention, involving scapular and rotator cuff muscle retraining and strengthening. Each group will utilise a different mode of rotator cuff strengthening—isometric, isotonic concentric or isotonic eccentric. Rotator cuff tendon responses to isometric loading are not yet established in the literature; hence, individualised, progressive loading will be used in this pilot study in accordance with symptoms. The intervention will involve two phases: during Phase 1 (weeks 1–6) participants undertake the active group-specific physiotherapy treatment; in Phase 2 (weeks 6–12), they undertake a progressive, but no longer group-specific exercise program. To determine feasibility, an evaluation of key study parameters including (a) ease of recruitment (rate and number as well as suitability of the assessment algorithm), (b) adherence to all phases of the exercise intervention including home program compliance and logbook completion, (c) participant non-completion (drop out number and rate) and (d) adverse events (nature and number) will be undertaken. Secondary outcomes will measure immediate effects: (i) within-treatment changes in pain perception (verbal rating scale (VRS) and shoulder muscle strength (hand-held dynamometer) as well as longer-term changes: (ii) shoulder-related symptoms and disability (Western Ontario Rotator Cuff Index (WORC) and Shoulder Pain and Disability Index (SPADI)), (iii) perception of pain (11-point numerical rating scale (NRS), (iv) shoulder muscle strength (hand-held dynamometer) and (v) perceived global rating of change score. The immediate within-treatment assessment of pain and muscle strength will be undertaken in treatments 2 and 3, and the longer term measures will be collected at the primary (conclusion of Phase 1 at 6 weeks) and secondary (conclusion of Phase 2 at 12 weeks) end-points of the study. Discussion The findings of this pilot study will permit evaluation of this study design for a full-scale RCT. Trial registration Australian New Zealand Clinical Trials Registry, ACTRN12616001676404 Electronic supplementary material The online version of this article (10.1186/s40814-017-0190-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rita Kinsella
- La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia.,Physiotherapy Department, St Vincent's Hospital, 41 Victoria Parade, Fitzroy, Melbourne, Australia
| | - Sallie M Cowan
- Clifton Hill Physiotherapy, 111 Queens Parade, Clifton Hill, Melbourne, Australia.,University of Melbourne, School of Physiotherapy, Melbourne, Australia
| | - Lyn Watson
- LifeCare Prahran Sports Medicine Centre, Prahran, Melbourne, Australia
| | - Tania Pizzari
- La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia
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Mc Auliffe S, Mc Creesh K, Purtill H, O'Sullivan K. A systematic review of the reliability of diagnostic ultrasound imaging in measuring tendon size: Is the error clinically acceptable? Phys Ther Sport 2016; 26:52-63. [PMID: 28162938 DOI: 10.1016/j.ptsp.2016.12.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 11/21/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Diagnostic ultrasound (US) is a commonly used imaging modality for visualising tendon pathology and morphology. In comparison to magnetic resonance imaging (MRI), diagnostic US is perceived to have a higher risk of error when evaluating tendon size. AIM To systematically assess the evidence regarding the Intra rater and Inter rater reliability of diagnostic US measurements of tendon size. DATA SOURCES Eight electronic databases were searched using an agreed set of keywords. Studies which investigated the reliability of tendon size (thickness or cross sectional area) using diagnostic US were eligible. RESULTS Combined Inter rater and Intra rater ICC values for tendon thickness ranged from 0.45 to 0.99. Combined Inter rater and Intra rater ICC values for tendon cross-sectional area (CSA) ranged from 0.58 to 0.92. Overall, Intra rater ICC values (0.59-0.99) were marginally higher than Inter rater values (0.45-0.99) across all tendon sites. Percentage co-efficient of variation (CV%) for tendon thickness and CSA ranged from 0 to 35% across all tendons. Percentage standard error of the mean SEM% values for tendon thickness ranged from 3.33% to 7.39%. CONCLUSIONS The findings of this review suggest diagnostic US measures of tendon size are reliable, both in terms of relative and absolute reliability. However, the findings must be considered in light of the presence of tendon abnormalities in a large percentage of asymptomatic populations.
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Affiliation(s)
- Sean Mc Auliffe
- Department of Clinical Therapies, University of Limerick, Ireland.
| | - Karen Mc Creesh
- Department of Clinical Therapies, University of Limerick, Ireland
| | - Helen Purtill
- Department of Mathematics and Statistics, University of Limerick, Ireland
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LaPrade RF, Geeslin AG, Murray IR, Musahl V, Zlotnicki JP, Petrigliano F, Mann BJ. Biologic Treatments for Sports Injuries II Think Tank-Current Concepts, Future Research, and Barriers to Advancement, Part 1: Biologics Overview, Ligament Injury, Tendinopathy. Am J Sports Med 2016; 44:3270-3283. [PMID: 27159318 DOI: 10.1177/0363546516634674] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Biologic therapies, including stem cells, platelet-rich plasma, growth factors, and other biologically active adjuncts, have recently received increased attention in the basic science and clinical literature. At the 2015 AOSSM Biologics II Think Tank held in Colorado Springs, Colorado, a group of orthopaedic surgeons, basic scientists, veterinarians, and other investigators gathered to review the state of the science for biologics and barriers to implementation of biologics for the treatment of sports medicine injuries. This series of current concepts reviews reports the summary of the scientific presentations, roundtable discussions, and recommendations from this think tank.
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Affiliation(s)
| | - Andrew G Geeslin
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, Michigan, USA
| | | | - Volker Musahl
- University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Jason P Zlotnicki
- University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | | | - Barton J Mann
- Author deceased.,American Orthopaedic Society for Sports Medicine, Rosemont, Illinois, USA
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Horton L, Emery P, Marshall P. Development and assessment of inter- and intra-rater reliability of a novel ultrasound tool for scoring tendon and sheath disease - A pilot study. ULTRASOUND : JOURNAL OF THE BRITISH MEDICAL ULTRASOUND SOCIETY 2016; 24:134-141. [PMID: 27867405 DOI: 10.1177/1742271x16652439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 04/28/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Tendon and synovial sheath disease is common. A method of monitoring the status of tendons and sheaths is important for both diagnosis of pathology and evaluation of the efficacy of treatments. For this study, an ultrasound scoring tool was developed and its reliability tested between raters. The tool is novel in that it scores tendons and sheaths separately, an important consideration since disorders of these structures are not necessarily concurrent. METHODS Thirty diseased tendons and sheaths were included in this pilot cross-sectional study. Tendon and sheath measurements were taken and the semi-quantitative five-grade score was applied to assess tendon greyscale, tendon Doppler activity and sheath Doppler activity. Inter-rater and intra-rater agreement exercises were undertaken to test the reliability of the scoring tool. RESULTS The Intra-class Correlation Coefficient values for both the inter-rater and intra-rater reliability tests showed excellent agreement for the tendon and sheath measurements. Unweighted kappa estimations for inter-rater scores showed excellent agreement for tendon Doppler; good agreement was shown for scoring sheath Doppler, while poor agreement was shown for tendon grey-scale scoring. The intra-rater reliability scores demonstrated similar results. CONCLUSION Overall, the study strongly supports the use of this scoring tool for the diagnosis and follow-up of tendon and sheath disorders. The results may be used as a starting point from which to base further work in this important area. Future studies should address the limitations found in this research with a strong focus on improving tendon grey-scale measurement accuracy and agreement.
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Affiliation(s)
- L Horton
- NIHR Leeds Musculoskeletal Biomedical Research Unit, Chapel Allerton Hospital, Leeds, UK; School of Healthcare, Baines Wing, University of Leeds, Leeds, UK
| | - P Emery
- NIHR Leeds Musculoskeletal Biomedical Research Unit, Chapel Allerton Hospital, Leeds, UK; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - P Marshall
- School of Healthcare, Baines Wing, University of Leeds, Leeds, UK
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Abstract
Strategies that seek to enhance musculoskeletal tissue regeneration and repair by modulating the biologic microenvironment at the site of injury have considerable therapeutic potential. Current and emerging biologic approaches include the use of growth factors, platelet-rich plasma, stem cell therapy, and scaffolds. The American Academy of Orthopaedic Surgeons hosted a research symposium in November 2015 to review the current state-of-the-art biologic treatments of articular cartilage, muscle, tendon, and bone injuries and identify knowledge gaps related to these emerging treatments. This review outlines the findings of the symposium and summarizes the consensus reached on how best to advance research on biologic treatment of orthopaedic injuries.
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20
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Lewis J. Rotator cuff related shoulder pain: Assessment, management and uncertainties. ACTA ACUST UNITED AC 2016; 23:57-68. [DOI: 10.1016/j.math.2016.03.009] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 03/14/2016] [Indexed: 10/22/2022]
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Parle PJ, Riddiford-Harland DL, Howitt CD, Lewis JS. Acute rotator cuff tendinopathy: does ice, low load isometric exercise, or a combination of the two produce an analgaesic effect? Br J Sports Med 2016; 51:208-209. [PMID: 27166286 DOI: 10.1136/bjsports-2016-096107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2016] [Indexed: 11/03/2022]
Affiliation(s)
- Phillip J Parle
- The Illawarra Sports Medicine Clinic, Gwynneville, New South Wales, Australia
| | - Diane L Riddiford-Harland
- Biomechanics Research Laboratory, Faculty of Science, Medicine and Health, University of Wollongong, New South Wales, Australia
| | - Chris D Howitt
- Southern Orthopaedics, Wollongong, New South Wales, Australia
| | - Jeremy S Lewis
- School of Health and Social Work, University of Hertfordshire, Hertfordshire, UK
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Castro ADAE, Skare TL, Nassif PAN, Sakuma AK, Barros WH. TENDINOPATHY AND OBESITY. ACTA ACUST UNITED AC 2016; 29Suppl 1:107-110. [PMID: 27683789 PMCID: PMC5064259 DOI: 10.1590/0102-6720201600s10026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/17/2016] [Indexed: 12/14/2022]
Abstract
Introduction Tendinopathies and tendon tears account for over 30% of all musculoskeletal consultations. Obesity, which is becoming one of the world´s most prevalent public health issues, may be associated with this condition. Objective To review the literature about tendinopathies and obesity association. Methods This is a descriptive exploratory study using the portal Medline. Literature in English language from 2006 to 2014 were reviewed. Results The pathogenesis of tendinopathies includes inflammatory, regenerative and degenerative processes that happen simultaneously from early to late phases of the disease. Mechanical stress upon tendons seems to be one of the most important factors to initiate the inflammatory response, but it´s not the only one that can deflagrate it: there are other extrinsic, genetic and metabolic factors that may be involved. Therefore, tendinopathies in obese patients can be due to tendon overload because of the excess of weight, but also because of increased production of pro-inflammatory mediators related to fat tissue such as adipokines. This pro-inflammatory state that obese people can suffer is known as adiposopathy, or sick fat syndrome. Weight loss is associated with decrease in adipokines and improvement of musculoskeletal symptoms. Conclusion The relation of obesity and tendinopathies is supported by evidences of recent studies, exemplified in this review of literature.
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Affiliation(s)
- Adham do Amaral E Castro
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | - Thelma Larocca Skare
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | - Paulo Afonso Nunes Nassif
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | - Alexandre Kaue Sakuma
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
| | - Wagner Haese Barros
- Postgraduate Program in Principles of Surgery, Evangelic Faculty of Paraná/University Evangelic Hospital of Curitiba/Medical Research Institute, Curitiba, PR, Brazil
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Musculoskeletal overuse injuries and heart rate variability: Is there a link? Med Hypotheses 2015; 87:1-7. [PMID: 26826630 DOI: 10.1016/j.mehy.2015.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 11/05/2015] [Accepted: 12/06/2015] [Indexed: 01/06/2023]
Abstract
Accurate detection and prevention of overuse musculoskeletal injuries is limited by the nature of somatic tissue injury. In the pathogenesis of overuse injuries, it is well recognized that an abnormal inflammatory response occurs within somatic tissue before pain is perceived which can disrupt the normal remodeling process and lead to subsequent degeneration. Current overuse injury prevention methods focused on biomechanical faults or performance standards lack the sensitivity needed to identify the status of tissue injury or repair. Recent evidence has revealed an apparent increase in the prevalence and impact of overuse musculoskeletal injuries in athletics. When compared to acute injuries, overuse injuries have a potentially greater negative impact on athletes' overall health burden. Further, return to sport rehabilitation following overuse injury is complicated by the fact that the absence of pain does not equate to complete physiological healing of the injured tissue. Together, this highlights the need for exercise monitoring and injury prevention methods which incorporate assessment of somatic tissue response to loading. One system primarily involved in the activation of pathways and neuromediators responsible for somatic tissue repair is the autonomic nervous system (ANS). Although not completely understood, emerging research supports the critical importance of peripheral ANS activity in the health and repair of somatic tissue injury. Due to its significant contributions to cardiac function, ANS activity can be measured indirectly with heart rate monitoring. Heart rate variability (HRV) is one index of ANS activity that has been used to investigate the relationship between athletes' physiological response to accumulating training load. Research findings indicated that HRV may provide a reflection of ANS homeostasis, or the body's stress-recovery status. This noninvasive marker of the body's primary driver of recovery has the potential to incorporate important and as yet unmonitored physiological mechanisms involved in overuse injury development. We hypothesize that abnormal somatic tissue response to accumulating microtrauma may modulate ANS activity at the level of HRV. Exploring the link between HRV modulation and somatic tissue injury has the potential to reveal the putative role of ANS homeostasis on overuse musculoskeletal injury development.
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Jacobsson J, Timpka T. Classification of Prevention in Sports Medicine and Epidemiology. Sports Med 2015; 45:1483-7. [DOI: 10.1007/s40279-015-0368-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Grosse U, Syha R, Hein T, Gatidis S, Grözinger G, Schabel C, Martirosian P, Schick F, Springer F. Diagnostic value of T1and T2* relaxation times and off-resonance saturation effects in the evaluation of achilles tendinopathy by MRI at 3T. J Magn Reson Imaging 2014; 41:964-73. [DOI: 10.1002/jmri.24657] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 04/10/2014] [Accepted: 04/13/2014] [Indexed: 12/21/2022] Open
Affiliation(s)
- Ulrich Grosse
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Roland Syha
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Tobias Hein
- Department of Sports Medicine; University Hospital Tuebingen; Tuebingen Germany
| | - Sergios Gatidis
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Gerd Grözinger
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Christoph Schabel
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Petros Martirosian
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Fritz Schick
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Fabian Springer
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section on Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
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Grosse U, Springer F, Hein T, Grözinger G, Schabel C, Martirosian P, Schick F, Syha R. Influence of physical activity on T1 and T2* relaxation times of healthy achilles tendons at 3T. J Magn Reson Imaging 2013; 41:193-201. [DOI: 10.1002/jmri.24525] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 11/06/2013] [Indexed: 12/22/2022] Open
Affiliation(s)
- Ulrich Grosse
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Fabian Springer
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Tobias Hein
- Department of Sports Medicine; University Hospital Tuebingen; Tuebingen Germany
| | - Gerd Grözinger
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Christoph Schabel
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Petros Martirosian
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Fritz Schick
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
| | - Roland Syha
- Department of Diagnostic and Interventional Radiology; University Hospital Tuebingen; Tuebingen Germany
- Section of Experimental Radiology; University Hospital Tuebingen; Tuebingen Germany
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