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Risch L, Mayer F, Cassel M. Doppler Flow Response Following Running Exercise Differs Between Healthy and Tendinopathic Achilles Tendons. Front Physiol 2021; 12:650507. [PMID: 33833692 PMCID: PMC8021791 DOI: 10.3389/fphys.2021.650507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 02/23/2021] [Indexed: 01/29/2023] Open
Abstract
Background The relationship between exercise-induced intratendinous blood flow (IBF) and tendon pathology or training exposure is unclear. Objective This study investigates the acute effect of running exercise on sonographic detectable IBF in healthy and tendinopathic Achilles tendons (ATs) of runners and recreational participants. Methods 48 participants (43 ± 13 years, 176 ± 9 cm, 75 ± 11 kg) performed a standardized submaximal 30-min constant load treadmill run with Doppler ultrasound “Advanced dynamic flow” examinations before (Upre) and 5, 30, 60, and 120 min (U5-U120) afterward. Included were runners (>30 km/week) and recreational participants (<10 km/week) with healthy (Hrun, n = 10; Hrec, n = 15) or tendinopathic (Trun, n = 13; Trec, n = 10) ATs. IBF was assessed by counting number [n] of intratendinous vessels. IBF data are presented descriptively (%, median [minimum to maximum range] for baseline-IBF and IBF-difference post-exercise). Statistical differences for group and time point IBF and IBF changes were analyzed with Friedman and Kruskal-Wallis ANOVA (α = 0.05). Results At baseline, IBF was detected in 40% (3 [1–6]) of Hrun, in 53% (4 [1–5]) of Hrec, in 85% (3 [1–25]) of Trun, and 70% (10 [2–30]) of Trec. At U5 IBF responded to exercise in 30% (3 [−1–9]) of Hrun, in 53% (4 [−2–6]) of Hrec, in 70% (4 [−10–10]) of Trun, and in 80% (5 [1–10]) of Trec. While IBF in 80% of healthy responding ATs returned to baseline at U30, IBF remained elevated until U120 in 60% of tendinopathic ATs. Within groups, IBF changes from Upre-U120 were significant for Hrec (p < 0.01), Trun (p = 0.05), and Trec (p < 0.01). Between groups, IBF changes in consecutive examinations were not significantly different (p > 0.05) but IBF-level was significantly higher at all measurement time points in tendinopathic versus healthy ATs (p < 0.05). Conclusion Irrespective of training status and tendon pathology, running leads to an immediate increase of IBF in responding tendons. This increase occurs shortly in healthy and prolonged in tendinopathic ATs. Training exposure does not alter IBF occurrence, but IBF level is elevated in tendon pathology. While an immediate exercise-induced IBF increase is a physiological response, prolonged IBF is considered a pathological finding associated with Achilles tendinopathy.
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Affiliation(s)
- Lucie Risch
- University Outpatient Clinic, Sports Medicine and Orthopedics, University of Potsdam, Potsdam, Germany
| | - Frank Mayer
- University Outpatient Clinic, Sports Medicine and Orthopedics, University of Potsdam, Potsdam, Germany.,Faculty of Health Sciences, University of Potsdam, Potsdam, Germany
| | - Michael Cassel
- University Outpatient Clinic, Sports Medicine and Orthopedics, University of Potsdam, Potsdam, Germany.,Faculty of Health Sciences, University of Potsdam, Potsdam, Germany
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Zhang YJ, Xu SZ, Gu PC, Du JY, Cai YZ, Zhang C, Lin XJ. Is Platelet-rich Plasma Injection Effective for Chronic Achilles Tendinopathy? A Meta-analysis. Clin Orthop Relat Res 2018; 476:1633-1641. [PMID: 29601383 PMCID: PMC6259774 DOI: 10.1007/s11999.0000000000000258] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Chronic Achilles tendinopathy is common in the general population, and platelet-rich plasma (PRP) is seeing increased use to treat this problem. However, studies disagree as to whether PRP confers a beneficial effect for chronic Achilles tendinopathy, and no one to our knowledge has pooled the available randomized trials in a formal meta-analysis to try to reconcile those differences. QUESTIONS/PURPOSES In the setting of a systematic review and meta-analysis of randomized controlled trials (RCTs), we asked: Does PRP plus eccentric strength training result in (1) greater improvements in Victorian Institute of Sports Assessment-Achilles (VISA-A) scores; (2) differences in tendon thickness; or (3) differences in color Doppler activity compared with placebo (saline) injections plus eccentric strength training in patients with chronic Achilles tendinopathy? METHODS A search of peer-reviewed articles was conducted to identify all RCTs using PRP injection with eccentric training for chronic Achilles tendinopathy in the electronic databases of PubMed, Web of Science (SCI-E/SSCI/A&HCI), and EMBASE from January 1981 to August 2017. Results were limited to human RCTs and published in all languages. Two reviewers assessed study quality using the Cochrane Collaboration risk-of-bias tool. All the included studies had low risk of bias. The primary endpoint was improvement in the VISA-A score, which ranges from 0 to 100 points, with higher scores representing increased activity and less pain; we considered the minimum clinically important difference on the VISA-A to be 12 points. Secondary outcomes were tendon thickness change (with a thicker tendon representing more severe disease), color Doppler activity (with more activity representing a poorer result), and other functional measures (such as pain and return to sports activity). Four RCTs involving 170 participants were eligible and included 85 participants treated with PRP injection and eccentric training and 85 treated with saline injection and eccentric training. The patients in both PRP and placebo (saline) groups seemed comparable at baseline. We assessed for publication bias using a funnel plot and saw no evidence of publication bias. Based on previous studies, we had 80% power to detect a 12-point difference on the VISA-A score with the available sample size in each group. RESULTS With the numbers available, there was no difference between the PRP and saline groups regarding the primary outcome (VISA-A score: mean difference [MD], 5.3; 95% confidence interval [CI], -0.7 to 11.3; p = 0.085). Likewise, we found no difference between the PRP and saline groups in terms of our secondary outcomes of tendon thickness change (MD, 0.2 mm; 95% CI, 0.6-1.0 mm; p = 0.663) and color Doppler activity (MD, 0.1; 95% CI, -0.7 to 0.4; p = 0.695). CONCLUSIONS PRP injection with eccentric training did not improve VISA-A scores, reduce tendon thickness, or reduce color Doppler activity in patients with chronic Achilles tendinopathy compared with saline injection. Larger randomized trials are needed to confirm these results, but until or unless a clear benefit has been demonstrated in favor of the new treatment, we cannot recommend it for general use. LEVEL OF EVIDENCE Level I, therapeutic study.
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Affiliation(s)
- Yi-Jun Zhang
- Yi-Jun Zhang, San-Zhong Xu, Peng-Cheng Gu, Jing-Yu Du, You-Zhi Cai, Chi Zhang, Xiang-Jin Lin, Department of Orthopedics, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, PR China
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Schneider M, Angele P, Järvinen TA, Docheva D. Rescue plan for Achilles: Therapeutics steering the fate and functions of stem cells in tendon wound healing. Adv Drug Deliv Rev 2018; 129:352-375. [PMID: 29278683 DOI: 10.1016/j.addr.2017.12.016] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/01/2017] [Accepted: 12/22/2017] [Indexed: 02/07/2023]
Abstract
Due to the increasing age of our society and a rise in engagement of young people in extreme and/or competitive sports, both tendinopathies and tendon ruptures present a clinical and financial challenge. Tendon has limited natural healing capacity and often responds poorly to treatments, hence it requires prolonged rehabilitation in most cases. Till today, none of the therapeutic options has provided successful long-term solutions, meaning that repaired tendons do not recover their complete strength and functionality. Our understanding of tendon biology and healing increases only slowly and the development of new treatment options is insufficient. In this review, following discussion on tendon structure, healing and the clinical relevance of tendon injury, we aim to elucidate the role of stem cells in tendon healing and discuss new possibilities to enhance stem cell treatment of injured tendon. To date, studies mainly apply stem cells, often in combination with scaffolds or growth factors, to surgically created tendon defects. Deeper understanding of how stem cells and vasculature in the healing tendon react to growth factors, common drugs used to treat injured tendons and promising cellular boosters could help to develop new and more efficient ways to manage tendon injuries.
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Gatz M, Schrading S, Dirrichs T, Betsch M, Tingart M, Rath B, Kuhl C, Quack V. Topical polidocanol application in combination with static stretching in tendinopathies: a prospective pilot study. Muscles Ligaments Tendons J 2017; 7:88-97. [PMID: 28717616 DOI: 10.11138/mltj/2017.7.1.088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Highly operator-based injection therapy with vasosclerosing and anesthetic polidocanol is used for tendinopathies. This pilot-study evaluates the topical application of polidocanol gel. METHODS Prospective case series. 39 patients with tendinopathies (14 Achilles, 14 patella, 11 wrist extensors) with a symptom duration > 6 months were included. Polidocanol and static stretching were the therapy in the first 2 weeks, while static stretching was continuously performed for 6 months. Clinical outcome was evaluated with VISA-A, VISA-P and DASH Scores and sonographically with B-Mode (B-Mode), Power Doppler (PD) and Shearwave Elastography (SWE). RESULTS 22 patients clinically improved (>+10 score points), 11 patients were without improvement (<+ 10) and 1 patient worsened during 6 months. The VISA-A Score increased in average 19 points from 56 to 75 (p< 0.01), VISA-P Score increased 13 points from 59 to 72 (p< 0,01) and the DASH-Score decreased 20 points from 40 to 20 (p< 0,01). SWE correlates better than B-Mode or PD with symptom improvement. CONCLUSION The combination of static training and topical polidocanol application seems to be successful in the treatment of tendinopathies. Further RCT studies need to evaluate the efficiency of topical polidocanol application. SWE is a more sensitive tool to describe symptom development than PD or B-Mode. LEVEL OF EVIDENCE IV.
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Affiliation(s)
| | - Simone Schrading
- Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Germany
| | - Timm Dirrichs
- Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Germany
| | | | | | - Björn Rath
- Department of Orthopaedics, RWTH Aachen, Germany
| | - Christiane Kuhl
- Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Germany
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Sunding K, Fahlström M, Werner S, Forssblad M, Willberg L. Evaluation of Achilles and patellar tendinopathy with greyscale ultrasound and colour Doppler: using a four-grade scale. Knee Surg Sports Traumatol Arthrosc 2016; 24:1988-96. [PMID: 25193569 DOI: 10.1007/s00167-014-3270-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 08/25/2014] [Indexed: 11/29/2022]
Abstract
PURPOSE In tendon research, using ultrasound (US), studies often refer to tendon thickness, structural abnormalities and neovascularisation. The reliability concerning these measurements and evaluations is seldom reported. The aim of this study was to assess the intra- and inter-observer reliability for quantitative measures (thickness) and qualitative evaluations (structure and neovascularisation) of symptomatic and asymptomatic Achilles and patellar tendons with US and colour Doppler using a modified Öhberg score. METHODS Twenty-eight consecutive patients with symptomatic and asymptomatic Achilles (n = 27) and patellar tendons (n = 26) were included. Tendon anteroposterior thickness was measured. Tendon structure and neovascularisation were evaluated using a modified Öhberg score. US-images were evaluated twice by four independent observers. RESULTS Mean thickness for Achilles and patellar tendons was 8.4 mm (±2.0) and 5.5 mm (±1.7), respectively. The reliability for measures of distance was high all over (ICC = 0.963-0.999). A moderate-strong correlation was found between observers concerning evaluation of neovascularisation (r = 0.767-0.992) and poor-moderate correlation concerning evaluation of structural changes (r = 0.379-0.837). Intra-observer reliability was moderate strong for evaluations of both tendon structure (k = 0.537-0.873) and neovascularisation (k = 0.639-0.864). CONCLUSIONS With a strict method for how to measure tendon thickness and set criteria for evaluating structural changes and amount and distribution of neovascularisation, US and colour Doppler is a reliable method for evaluating Achilles and patellar tendons. The modified, 4-graded, Öhberg score was found to be a reproducible instrument for assessment of tendon structure and neovascularisation.
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Affiliation(s)
- Kerstin Sunding
- Stockholm Sports Trauma Research Centre/Karolinska Institutet, Capio Artro Clinic AB, Sophiahemmet, Box 5605, 114 86, Stockholm, Sweden.
| | - Martin Fahlström
- Department of Clinical Sciences, Professional Development, Umeå University, 901 87, Umeå, Sweden
| | - Suzanne Werner
- Stockholm Sports Trauma Research Centre/Karolinska Institutet, Capio Artro Clinic AB, Sophiahemmet, Box 5605, 114 86, Stockholm, Sweden
| | - Magnus Forssblad
- Stockholm Sports Trauma Research Centre/Karolinska Institutet, Capio Artro Clinic AB, Sophiahemmet, Box 5605, 114 86, Stockholm, Sweden
| | - Lotta Willberg
- Stockholm Sports Trauma Research Centre/Karolinska Institutet, Capio Artro Clinic AB, Sophiahemmet, Box 5605, 114 86, Stockholm, Sweden
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Association between plantar fascia vascularity and morphology and foot dysfunction in individuals with chronic plantar fasciitis. J Orthop Sports Phys Ther 2013; 43:727-34. [PMID: 23886626 DOI: 10.2519/jospt.2013.4774] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
STUDY DESIGN Single-cohort laboratory-based study. OBJECTIVES To identify whether plantar fascia vascularity and thickness are associated with foot pain and dysfunction in individuals with chronic plantar fasciitis. Background Altered plantar fascia vascularity and thickening of the fascia have been identified in individuals with chronic plantar fasciitis. METHODS Thirty-eight patients with chronic unilateral plantar fasciitis and 21 controls participated in this study. Proximal plantar fascia vascularization and thickness were assessed using ultrasound imaging, and pain and foot dysfunction were quantified with a visual analog scale and the Chinese version of the Foot Function Index, respectively. Paired t tests were used to assess the side-to-side differences in fascia thickness and vascularity index (VI) in the control and patient groups, and an unpaired t test was used to make comparisons with the patient group. Multiple regression analysis was performed to identify whether the VI and fascia thickness were associated with pain and foot dysfunction. RESULTS There were significantly higher VI (mean ± SD, 2.4% ± 1.4%) and fascia thickness (5.0 ± 1.3 mm) values in the affected feet when compared with the unaffected feet in the patient group (VI, 1.4% ± 0.5%; fascia thickness, 3.3 ± 0.7 mm) and with the dominant side of the controls (VI, 1.6% ± 0.4%; fascia thickness, 2.9 ± 0.6 mm). After accounting for age, gender, body mass index, and duration of symptoms, the VI explained 13% and 33% of the variance in pain scores measured with a visual analog scale and the pain subscale of the Foot Function Index, respectively; the VI and fascia thickness explained 42% of the variance in the Foot Function Index. CONCLUSIONS Individuals with unilateral chronic plantar fasciitis demonstrated significantly greater vascularity and thickened fascia on the affected side compared to the unaffected side and also to healthy controls. Fascia vascularity was associated independently with self-perceived pain, and both fascia vascularity and thickness were associated with foot dysfunction in patients with chronic plantar fasciitis. Public trials registry: Current Controlled Trials, ISRCTN49594569.
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Resteghini P, Yeoh J. High-volume injection in the management of recalcitrant mid-body Achilles tendinopathy: a prospective case series assessing the influence of neovascularity and outcome. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/1753615412y.0000000004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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De Jonge S, Warnaars JLF, De Vos RJ, Weir A, van Schie HTM, Bierma-Zeinstra SMA, Verhaar JAN, Tol JL. Relationship between neovascularization and clinical severity in Achilles tendinopathy in 556 paired measurements. Scand J Med Sci Sports 2013; 24:773-8. [DOI: 10.1111/sms.12072] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2013] [Indexed: 01/14/2023]
Affiliation(s)
- S. De Jonge
- Sports Medicine Department; The Hague Medical Center; Leidschendam The Netherlands
- Department of Orthopedics; Erasmus Medical Center; Rotterdam The Netherlands
| | - J. L. F. Warnaars
- Sports Medicine Department; The Hague Medical Center; Leidschendam The Netherlands
| | - R. J. De Vos
- Sports Medicine Department; The Hague Medical Center; Leidschendam The Netherlands
| | - A. Weir
- Sports Medicine Department; The Hague Medical Center; Leidschendam The Netherlands
| | - H. T. M. van Schie
- Department of Orthopedics; Erasmus Medical Center; Rotterdam The Netherlands
- Department of Equine Sciences; Faculty of Veterinary Medicine; Utrecht University; Utrecht The Netherlands
| | - S. M. A. Bierma-Zeinstra
- Sports Medicine Department; The Hague Medical Center; Leidschendam The Netherlands
- Department of General Practice; Erasmus University Medical Center; Rotterdam The Netherlands
| | - J. A. N. Verhaar
- Department of Orthopedics; Erasmus Medical Center; Rotterdam The Netherlands
| | - J. L. Tol
- Sports Medicine Department; The Hague Medical Center; Leidschendam The Netherlands
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SWAAT study: extracorporeal shock wave therapy and arginine supplementation and other nutraceuticals for insertional Achilles tendinopathy. Adv Ther 2012; 29:799-814. [PMID: 22923162 DOI: 10.1007/s12325-012-0046-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Extracorporeal shockwave therapy (ESWT) produces good results in the treatment of insertional Achilles tendinopathy. The efficacy of combined administration of dietary supplements with ESWT has not yet been studied. METHODS In this prospective, randomized clinical trial, Shock Waves therapy and Arginine for Achilles Tendinopathy (SWAAT), subjects affected by insertional Achilles tendinopathy were enrolled. Between January and October 2011, all participants underwent three sessions of ESWT. In addition, the patients in the experimental group received a daily dietary supplement containing arginine, Vinitrox (Bio Serae Laboratories SAS, Bram, France), collagen, methyl-sulfonyl-methane, vitamin C, and bromelain, while the control group patients received placebo. RESULTS There was no statistically significant difference in the visual analog scale (VAS) score between the two groups at 2 months (3.9 vs. 5.1; P=0.07), whereas at 6 months the value was significantly lower in the experimental group (2.0 vs. 2.9; P=0.04). The difference in the Ankle-Hindfoot Scale score at 2 and 6 months of follow-up (FU) was significantly in favor of the experimental group (2 months: 85.4 vs. 72.1; P=0.0035; 6 months: 92.4 vs. 76.5; P=0.0002). The Roles and Maudsley score also showed a statistically significant difference between the two groups in favor of the experimental arm as regards patient satisfaction (at 2 months: 1.7 vs. 2.8; P<0.0001; at 6 months: 1.5 vs. 2.3; P<0.001). There was a statistically significant reduction in tissue oximetry values compared to baseline in both treatment groups at 2 and 6 months of FU. Comparing the groups, only at the last FU, at 6 months, was a significantly lower oximetry value observed in the experimental group versus controls (60.2 vs. 66.0; P=0.007). CONCLUSION On the basis of the results obtained in this study, the authors conclude that in the treatment of insertional Achilles tendinopathy, ESWT induces a hemodynamic re-equilibrium with an amelioration in tendon trophism [corrected]. The addition of specific dietary supplements could improve the therapeutic response.
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Chang KV, Wu CH, Ding YH, Shen HY, Wang TG, Chen WS. Application of contrast-enhanced sonography with time-intensity curve analysis to explore hypervascularity in Achilles tendinopathy by using a rabbit model. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2012; 31:737-746. [PMID: 22535721 DOI: 10.7863/jum.2012.31.5.737] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVES The purpose of this study was to investigate the ability of contrast-enhanced sonography in staging and grading hypervascularity in tendinopathic tissues by using a rabbit model. METHODS Fourteen rabbits were injected with 100 and 50 μL of collagenase in their left and right Achilles tendons, respectively. The vascularity was assessed by non-contrast-enhanced and contrast-enhanced power Doppler sonography on day 0 (baseline) and days 1, 7, and 14 after collagenase injections. Color pixels within targeted areas were plotted according to time and analyzed by a curve-fitting method. RESULTS Non-contrast-enhanced power Doppler sonography failed to differentiate vascularity at various stages or between bilateral tendons, whereas contrast-enhanced sonography showed that the peak color pixel amount reached its maximum on day 1 and declined over time in tendons treated with 100 μL of collagenase. A similar trend was observed in tendons receiving 50 μL of collagenase. For comparisons between bilateral tendons, higher vascularity was detected in those treated with more collagenase on day 1 or 7. Time-intensity curve analysis revealed rapid microbubble replenishment in both tendons during their initial phase after collagenase injections. CONCLUSIONS Contrast-enhanced sonography discriminated the vascularity of various injury grades at different time points after collagenase injections. Time-intensity curve analysis detailed the hemodynamics in tendinopathic tissues, which helped differentiate vascularity in acute inflammatory from later degenerative phases.
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Affiliation(s)
- Ke-Vin Chang
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Chen H, Ho HM, Ying M, Fu SN. Correlation between computerised findings and Newman's scaling on vascularity using power Doppler ultrasonography imaging and its predictive value in patients with plantar fasciitis. Br J Radiol 2011; 85:925-9. [PMID: 22167513 DOI: 10.1259/bjr/99342011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The purpose of this study was to correlate findings on small vessel vascularity between computerised findings and Newman's scaling using power Doppler ultrasonography (PDU) imaging and its predictive value in patients with plantar fasciitis. METHODS PDU was performed on 44 patients (age range 30-66 years; mean age 48 years) with plantar fasciitis and 46 healthy subjects (age range 18-61 years; mean age 36 years). The vascularity was quantified using ultrasound images by a customised software program and graded by Newman's grading scale. Vascular index (VI) was calculated from the software program as the ratio of the number of colour pixels to the total number of pixels within a standardised selected area of proximal plantar fascia. The 46 healthy subjects were examined on 2 occasions 7-10 days apart, and 18 of them were assessed by 2 examiners. Statistical analyses were performed using intraclass correlation coefficient and linear regression analysis. RESULTS Good correlation was found between the averaged VI ratios and Newman's qualitative scale (ρ=0.70; p<0.001). Intratester and intertester reliability were 0.89 and 0.61, respectively. Furthermore, higher VI was correlated with less reduction in pain after physiotherapeutic intervention. CONCLUSIONS The computerised VI not only has a high level of concordance with the Newman grading scale but is also reliable in reflecting the vascularity of proximal plantar fascia, and can predict pain reduction after intervention. This index can be used to characterise the changes in vascularity of patients with plantar fasciitis, and it may also be helpful for evaluating treatment and monitoring the progress after intervention in future studies.
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Affiliation(s)
- H Chen
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong
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de Jonge S, de Vos RJ, Weir A, van Schie HTM, Bierma-Zeinstra SMA, Verhaar JAN, Weinans H, Tol JL. One-year follow-up of platelet-rich plasma treatment in chronic Achilles tendinopathy: a double-blind randomized placebo-controlled trial. Am J Sports Med 2011; 39:1623-9. [PMID: 21602565 DOI: 10.1177/0363546511404877] [Citation(s) in RCA: 235] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Achilles tendinopathy is a common disease among both athletes and in the general population in which the use of platelet-rich plasma has recently been increasing. Good evidence for the use of this autologous product in tendinopathy is limited, and data on longer-term results are lacking. PURPOSE To study the effects of a platelet-rich plasma injection in patients with chronic midportion Achilles tendinopathy at 1-year follow-up. STUDY DESIGN Randomized controlled trial; Level of evidence, 1. METHODS Fifty-four patients, aged 18 to 70 years, with chronic tendinopathy 2 to 7 cm proximal to the Achilles tendon insertion were randomized to receive either a blinded injection containing platelet-rich plasma or saline (placebo group) in addition to an eccentric training program. The main outcome was the validated Victorian Institute of Sports Assessment-Achilles score. Patient satisfaction was recorded and ultrasound examination performed at baseline and follow-up. RESULTS The mean Victorian Institute of Sports Assessment-Achilles score improved in both the platelet-rich plasma group and the placebo group after 1 year. There was no significant difference in increase between both groups (adjusted between-group difference, 5.5; 95% confidence interval, -4.9 to 15.8, P = .292). In both groups, 59% of the patients were satisfied with the received treatment. Ultrasonographic tendon structure improved significantly in both groups but was not significantly different between groups (adjusted between-group difference, 1.2%; 95% confidence interval, -4.1 to 6.6, P = .647). CONCLUSION This randomized controlled trial showed no clinical and ultrasonographic superiority of platelet-rich plasma injection over a placebo injection in chronic Achilles tendinopathy at 1 year combined with an eccentric training program.
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Affiliation(s)
- Suzan de Jonge
- Department of Orthopaedics, Erasmus University Medical Center, Rotterdam, the Netherlands.
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Yang X, Pugh ND, Coleman DP, Nokes LDM. Are Doppler studies a useful method of assessing neovascularization in human Achilles tendinopathy? A systematic review and suggestions for optimizing machine settings. J Med Eng Technol 2010; 34:365-72. [DOI: 10.3109/03091902.2010.497892] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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The short-term effects of high volume image guided injections in resistant non-insertional Achilles tendinopathy. J Sci Med Sport 2010; 13:295-8. [DOI: 10.1016/j.jsams.2009.09.007] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Revised: 09/24/2009] [Accepted: 09/25/2009] [Indexed: 11/20/2022]
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Abstract
Tendon transfers are commonly used in the foot and ankle to restore function in neglected ruptures, reconstruct degenerated tendons, and correct deformity. The Achilles tendon is commonly afflicted by these problems because of the dominant role it plays in the mechanics of gait and running and its inherently poor blood supply. This article discusses the general principles of tendon transfers with regard to Achilles tendon function, the surgical techniques involved, and published results using these techniques. The goal is to provide the orthopedic foot and ankle surgeon with a wide variety of techniques to solve both the straightforward Achilles tendon problem as well as the difficult revision case.
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Affiliation(s)
- Johnny L Lin
- Department of Orthopaedic Surgery, Rush University Medical Center, 1725 W. Harrison Street, Ste 1063, Chicago, IL 60612, USA.
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Courville XF, Coe MP, Hecht PJ. Current concepts review: noninsertional Achilles tendinopathy. Foot Ankle Int 2009; 30:1132-42. [PMID: 19912730 DOI: 10.3113/fai.2009.1132] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Xan F Courville
- Department of Orthopaedic Surgery, Dartmouth Hitchcock Medical Center, Lebanon, NH 03756, USA
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Abate M, Silbernagel KG, Siljeholm C, Di Iorio A, De Amicis D, Salini V, Werner S, Paganelli R. Pathogenesis of tendinopathies: inflammation or degeneration? Arthritis Res Ther 2009; 11:235. [PMID: 19591655 PMCID: PMC2714139 DOI: 10.1186/ar2723] [Citation(s) in RCA: 324] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The intrinsic pathogenetic mechanisms of tendinopathies are largely unknown and whether inflammation or degeneration has the prominent role is still a matter of debate. Assuming that there is a continuum from physiology to pathology, overuse may be considered as the initial disease factor; in this context, microruptures of tendon fibers occur and several molecules are expressed, some of which promote the healing process, while others, including inflammatory cytokines, act as disease mediators. Neural in-growth that accompanies the neovessels explains the occurrence of pain and triggers neurogenic-mediated inflammation. It is conceivable that inflammation and degeneration are not mutually exclusive, but work together in the pathogenesis of tendinopathies.
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Affiliation(s)
- Michele Abate
- Postgraduate School of Physical Medicine and Rehabilitation, University G d'Annunzio, Chieti-Pescara, 66013 Chieti Scalo, CH, Italy.
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Chan O, O'Dowd D, Padhiar N, Morrissey D, King J, Jalan R, Maffulli N, Crisp T. High volume image guided injections in chronic Achilles tendinopathy. Disabil Rehabil 2009; 30:1697-708. [PMID: 18608362 DOI: 10.1080/09638280701788225] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE To determine the effectiveness of high volume image guided injections (HVIGI) for chronic Achilles tendinopathy. METHODS We included in the study 30 consecutive patients (mean age 37.2 years, range 24 - 58 years) with Achilles tendinopathy for a mean of 35.8 months (range 2 - 276 months) who had failed to improve after a three-month programme of eccentric loading of the gastro-soleus complex. Patients were injected with 10 ml of 0.5% Bupivacaine Hydrochloride, 25 mg Hydrocortisone acetate, and up to 40 ml of injectable normal saline. A study-specific questionnaire and the Victorian Institute of Sport Assessment - Achilles tendon (VISA-A) were retrospectively administered to assess short- and long-term pain and functional improvement. RESULTS Some 21 patients (70%) responded. Patients reported significant short-term improvement at 4 weeks of both pain (mean change 50 mm, [SD 28, p < 0.0001], from a mean of 76 mm [SD 18.2], to a mean of 25 mm [SD 23.3]), and function scores (mean change 51 mm, [SD 31.2, p < 0.0001], from a mean of 78 mm [SD 20.8], to a mean of 27 mm [SD 28.4]). Patients also reported significant long-term improvement in symptoms using the VISA-A questionnaire (mean change 31.2 points, [SD = 28, p < 0.0001], from a mean of 44.8 points [SD 17.7], to a mean of 76.2 points [SD 24.6]) at a mean of 30.3 weeks from the injection. CONCLUSIONS HVIGI significantly reduces pain and improves function in patients with resistant Achilles tendinopathy in the short- and long-term.
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Affiliation(s)
- Otto Chan
- Department of Imaging, The London Independent Hospital, London, UK
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Abstract
Overuse tendinopathy remains a major clinical burden for sports medicine and general practitioners. Recent studies have highlighted the role of sensory and autonomic nerves in generating or perpetuating the symptoms and tissue abnormalities associated with tendinopathy. We outline the neuroanatomy and potential roles of nerves and associated neuropeptides in tendinopathy. In addition, intriguing new data is reviewed which suggests that there may be a substantial intrinsic source of neuropeptides within tendons - namely, the tenocytes themselves. The potential roles of Substance P and mast cells are highlighted in particular. We discuss the implications for conservative management including sclerosing injections and exercise training.
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Affiliation(s)
- Alexander Scott
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, Canada.
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Hoksrud A, Ohberg L, Alfredson H, Bahr R. Color Doppler ultrasound findings in patellar tendinopathy (jumper's knee). Am J Sports Med 2008; 36:1813-20. [PMID: 18753682 DOI: 10.1177/036354650831989] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Recent studies have revealed structural changes with neovessels in patients with jumper's knee and Achilles tendinopathy, and treatment with sclerosing injections has shown promising clinical results. PURPOSE To study the prevalence of neovascularization and structural tendon changes on color Doppler ultrasound examination in elite athletes with clinical symptoms of jumper's knee and to examine the ultrasound characteristics of the tendon after sclerosing injection treatment with polidocanol. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS The authors recruited patients among elite athletes with a clinical diagnosis of jumper's knee who participated in a previous randomized clinical trial. The patients recorded knee function using the Victorian Institute of Sport Assessment score. Patients were examined by color Doppler ultrasound at baseline and, for patients with structural changes and neovascularization who received sclerosing treatment, after treatment. RESULTS Sixty-three patients (11 women and 52 men) with 79 symptomatic tendons were studied. The ultrasound examination revealed that neovascularization was present in 48 of the 79 tendons (60%). Of 33 patients (43 tendons) who received sclerosing injections, 29 patients (37 tendons, 86%) were examined 37 (19 to 53) weeks after their final sclerosing injections. Of these, 7 tendons (18.9%) had no change in neovascularization after treatment, 21 tendons (56.8%) had less neovascularization, and 9 tendons (24.3%) had more visible neovascularization. There were no significant differences in the change in Victorian Institute of Sport Assessment score between patients who had less, more, or unchanged neovascularization after treatment (analysis of variance, P = .9). CONCLUSION About two thirds of patients with jumper's knee can be expected to have structural tendon changes with neovascularization. There was no relationship between changes in ultrasound characteristic and knee function after sclerosing treatment.
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Affiliation(s)
- Aasne Hoksrud
- Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, PO Box 4014 Ullevaal Stadion, 0806 Oslo, Norway
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Affiliation(s)
- Aaron T Scott
- Division of Orthopaedic Surgery, Duke University Medical Center, Duke University, Durham, NC 27704, USA
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Knobloch K. The role of tendon microcirculation in Achilles and patellar tendinopathy. J Orthop Surg Res 2008; 3:18. [PMID: 18447938 PMCID: PMC2397381 DOI: 10.1186/1749-799x-3-18] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Accepted: 04/30/2008] [Indexed: 12/11/2022] Open
Abstract
Tendinopathy is of distinct interest as it describes a painful tendon disease with local tenderness, swelling and pain associated with sonographic features such as hypoechogenic texture and diameter enlargement. Recent research elucidated microcirculatory changes in tendinopathy using laser Doppler flowmetry and spectrophotometry such as at the Achilles tendon, the patellar tendon as well as at the elbow and the wrist level. Tendon capillary blood flow is increased at the point of pain. Tendon oxygen saturation as well as tendon postcapillary venous filling pressures, determined non-invasively using combined Laser Doppler flowmetry and spectrophotometry, can quantify, in real-time, how tendon microcirculation changes over with pathology or in response to a given therapy. Tendon oxygen saturation can be increased by repetitive, intermittent short-term ice applications in Achilles tendons; this corresponds to 'ischemic preconditioning', a method used to train tissue to sustain ischemic damage. On the other hand, decreasing tendon oxygenation may reflect local acidosis and deteriorating tendon metabolism. Painful eccentric training, a common therapy for Achilles, patellar, supraspinatus and wrist tendinopathy decreases abnormal capillary tendon flow without compromising local tendon oxygenation. Combining an Achilles pneumatic wrap with eccentric training changes tendon microcirculation in a different way than does eccentric training alone; both approaches reduce pain in Achilles tendinopathy. The microcirculatory effects of measures such as extracorporeal shock wave therapy as well as topical nitroglycerine application are to be studied in tendinopathy as well as the critical question of dosage and maintenance. Interestingly it seems that injection therapy using color Doppler for targeting the area of neovascularisation yields to good clinical results with polidocanol sclerosing therapy, but also with a combination of epinephrine and lidocaine.
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Affiliation(s)
- Karsten Knobloch
- Plastic, Hand and Reconstructive surgery, Hannover Medical School, Germany.
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Knobloch K, de Vos RJ, Weir A, Tol JL. The use of a neovascularization score to predict clinical severity in Achilles tendinopathy. Am J Sports Med 2008; 36:395; author reply 395-7. [PMID: 18202299 DOI: 10.1177/0363546507312378] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Alfredson H, Ohberg L, Zeisig E, Lorentzon R. Treatment of midportion Achilles tendinosis: similar clinical results with US and CD-guided surgery outside the tendon and sclerosing polidocanol injections. Knee Surg Sports Traumatol Arthrosc 2007; 15:1504-9. [PMID: 17879083 DOI: 10.1007/s00167-007-0415-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2007] [Accepted: 08/22/2007] [Indexed: 10/22/2022]
Abstract
Sclerosing polidocanol injections targeting the area with vasculo/neural ingrowth on the ventral side of the tendon have previously been demonstrated to give good clinical results in patients with chronic painful midportion Achilles tendinosis. In this study, 20 consecutive patients (9 men and 11 women, mean age 46 years) with chronic painful midportion Achilles tendinosis were treated with either sclerosing polidocanol injections (Group A) or open surgical revision of the area with vasculo/neural ingrowth on the ventral side of the Achilles tendon (Group B). Before treatment, all patients had structural tendon changes and increased blood flow-neovascularisation demonstrated with US and colour Doppler. Under US and colour Doppler-guidance, both the injections and the surgical revision targeted the area with neovessels just outside the ventral part of the tendon. A maximum of two sclerosing injection treatments, with 6-8 weeks in-between, were given. For evaluation, the patients recorded the severity of Achilles tendon pain during tendon loading activity (their recreational or sport activity), before and after treatment, on a VAS. Patient global satisfaction with treatment was also assessed. At the 3 months follow-up 6/9 (one patient was excluded) patients in Group A, and 8/10 patients in Group B, were satisfied with the treatment and had a significantly reduced level of tendon pain (Group A VAS from 76 to 24, P < 0.05, Group B VAS from 75 to 21, P < 0.05). There was one deep infection in Group B. At the 6 months follow-up, 6/9 patients in Group A, and 10/10 patients in Group B were satisfied. In summary, both treatment with sclerosing polidocanol injections and open surgical revision outside the ventral Achilles midportion show promising short-term clinical results.
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Affiliation(s)
- Håkan Alfredson
- Department of Surgical and Perioperative Science Sports Medicine, Sports Medicine Unit, University of Umeå, 901 87 Umeå, Sweden.
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de Vos RJ, Weir A, Cobben LPJ, Tol JL. The value of power Doppler ultrasonography in Achilles tendinopathy: a prospective study. Am J Sports Med 2007; 35:1696-701. [PMID: 17557877 DOI: 10.1177/0363546507303116] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Neovascularization, detected with power Doppler ultrasonography (PDU), is thought by some to play a central role in pathogenesis of Achilles tendinopathy. HYPOTHESIS Power Doppler ultrasonography neovascularization score is correlated with clinical severity at baseline and after conservative treatment. STUDY DESIGN Cohort study (prognosis); Level of evidence, 2. METHODS Seventy tendons from 58 patients with chronic midportion Achilles tendinopathy were included, and 63 symptomatic tendons were analyzed. All patients were prescribed a 12-week heavy-load eccentric training program and evaluated with PDU at baseline and 12 weeks. Patient satisfaction, Victorian Institute of Sports Assessment-Achilles (VISA-A) score, and mean visual analog scale (VAS) score were correlated with degree of neovascularization (5-grade scale). RESULTS Of the 63 symptomatic tendons, baseline neovascularization scores were 23 grade 0 (37% no neovessels), 18 grade 1, 8 grade 2, 8 grade 3, and 6 grade 4 (63% neovascularization grades 1-4). At baseline, neovascularization was not significantly correlated with the mean VAS score (r=.19, P=.131) and VISA-A score (r=-.23, P=.074). At 12-week follow-up, the neovascularization score significantly correlated with the mean VAS score (r=.43, P<.001) and VISA-A score (r=-.46, P<.001). No significant differences were found in improvement of VISA-A score after treatment between patients with neovessels (grades 1-4) or without neovessels (grade 0) at baseline. CONCLUSION Sixty-three percent of the symptomatic tendons were found to have neovessels at baseline. There was no significant correlation between neovascularization score and clinical severity at baseline, but at follow-up, there was a significant correlation. Neovascularization at baseline did not predict clinical outcome after conservative treatment.
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Affiliation(s)
- Robert-Jan de Vos
- The Hague Medical Centre Antoniushove, Sports Medicine Department, PO Box 411, Burgemeester Banninglaan 1, 2260 AK Leidschendam, The Netherlands
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