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Tendon tendinopathy achilles

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https://www.readbyqxmd.com/read/28301205/intratendon-delivery-of-leukocyte-poor-platelet-rich-plasma-improves-healing-compared-with-leukocyte-rich-platelet-rich-plasma-in-a-rabbit-achilles-tendinopathy-model
#1
Ruijian Yan, Yanjia Gu, Jisheng Ran, Yejun Hu, Zefeng Zheng, Mengfeng Zeng, Boonchin Heng, Xiao Chen, Zi Yin, Weishan Chen, Weiliang Shen, Hongwei Ouyang
BACKGROUND: Chronic tendinopathy is a commonly occurring clinical problem that affects both athletes and inactive middle-aged patients. Although some studies have shown that different platelet-rich plasma (PRP) preparations could exert various therapeutic effects in vitro, the role of leukocytes in PRP has not yet been defined under tendinopathy conditions in vivo. PURPOSE: This study compared the effects of the intratendon delivery of leukocyte-poor PRP (Lp-PRP) versus leukocyte-rich PRP (Lr-PRP) in a rabbit chronic tendinopathy model in vivo...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28294413/acute-effect-of-running-exercise-on-physiological-achilles-tendon-blood-flow
#2
Lucie Risch, Michael Cassel, Frank Mayer
Sonographically detectable intratendinous blood flow (IBF) is found in 50-88% of Achilles tendinopathy patients as well as in up to 35% of asymptomatic Achilles tendons (AT). Although IBF is frequently associated with tendon pathology, it may also represent a physiological regulation e.g. due to increased blood flow in response to exercise. Therefore, this study aimed to investigate the acute effects of a standardized running exercise protocol on IBF assessed with Doppler ultrasound (DU) "Advanced dynamic flow" in healthy ATs...
March 13, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28291954/therapeutic-mechanisms-of-human-adipose-derived-mesenchymal-stem-cells-in-a-rat-tendon-injury-model
#3
Sang Yoon Lee, Bomi Kwon, Kyoungbun Lee, Young Hoon Son, Sun G Chung
BACKGROUND: Although survival of transplanted stem cells in vivo and differentiation of stem cells into tenocytes in vitro have been reported, there have been no in vivo studies demonstrating that mesenchymal stem cells (MSCs) could secrete their own proteins as differentiated tenogenic cells. Purpose/Hypothesis: Using a xenogeneic MSC transplantation model, we aimed to investigate whether MSCs could differentiate into the tenogenic lineage and secrete their own proteins. The hypothesis was that human MSCs would differentiate into the human tenogenic lineage and the cells would be able to secrete human-specific proteins in a rat tendon injury model...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28289916/predicting-tenocyte-expression-profiles-and-average-molecular-concentrations-in-achilles-tendon-ecm-from-tissue-strain-and-fiber-damage
#4
Arash Mehdizadeh, Bruce S Gardiner, Michael Lavagnino, David W Smith
In this study, we propose a method for quantitative prediction of changes in concentrations of a number of key signaling, structural and effector molecules within the extracellular matrix of tendon. To achieve this, we introduce the notion of elementary cell responses (ECRs). An ECR defines a normal reference secretion profile of a molecule by a tenocyte in response to the tenocyte's local strain. ECRs are then coupled with a model for mechanical damage of tendon collagen fibers at different straining conditions of tendon and then scaled up to the tendon tissue level for comparison with experimental observations...
March 13, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28289634/long-term-outcome-and-factors-affecting-prognosis-of-extracorporeal-shockwave-therapy-for-chronic-refractory-achilles-tendinopathy
#5
Joon-Youn Lee, Kyungjae Yoon, Youbin Yi, Chul-Hyun Park, Jung-Sang Lee, Kyoung-Ho Seo, Young Sook Park, Yong-Taek Lee
OBJECTIVE: To investigate the factors affecting prognosis of extracorporeal shockwave therapy (ESWT) for chronic refractory Achilles tendinopathy (AT). METHODS: Thirty-six patients (48 consecutive feet) with chronic AT (>6 months) and who underwent ESWT for 'poor' or 'fair' grade in Roles-Maudsley Score (RMS) after unsuccessful conservative treatment were included in the present study. A maximum of 12 sessions of ESWT were conducted until treatment success: RMS reached 'good' or 'excellent'...
February 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28258946/achilles-impingement-tendinopathy-on-magnetic-resonance-imaging
#6
Mark J Bullock, Jan Mourelatos, Alice Mar
Haglund's syndrome is impingement of the retrocalcaneal bursa and Achilles tendon caused by a prominence of the posterosuperior calcaneus. Radiographic measurements are not sensitive or specific for diagnosing Haglund's deformity. Localization of a bone deformity and tendinopathy in the same sagittal section of a magnetic resonance imaging scan can assist with the diagnosis in equivocal cases. The aim of the present cross-sectional study was to determine the prevalence of Haglund's syndrome in patients presenting with Achilles tendinopathy and note any associated findings to determine the criteria for a diagnosis of Haglund's syndrome...
February 28, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28257673/midsubstance-tendinopathy-surgical-management
#7
REVIEW
William T DeCarbo, Mark J Bullock
Noninsertional Achilles tendinopathy often responds to nonoperative treatment. When nonoperative treatment fails, the clinician must distinguish between paratendinopathy and noninsertional tendinopathy. In paratendinopathy, myofibroblasts synthesize collagen, causing adhesions, and the paratenon may be released or excised. If a core area of tendinopathy is identified on MRI, the area is excised longitudinally and repaired with a side-to-side suture. If greater than 50% of the tendon diameter is excised, the authors recommend a short flexor hallucis longus tendon transfer with an interference screw...
April 2017: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/28257671/nonsurgical-management-of-midsubstance-achilles-tendinopathy
#8
REVIEW
Shane McClinton, Lace Luedke, Derek Clewley
Midsubstance Achilles tendinopathy is one of the most common lower leg conditions. Most patients can recover with nonsurgical treatment that focuses on tendon loading exercises and, when necessary, symptom modulating treatments such as topical, oral, or injected medication, ice, shoe inserts, manual therapy, stretching, taping, or low-level laser. If unresponsive to initial management, a small percentage of patients may consider shockwave or sclerosing treatment and possibly surgery.
April 2017: Clinics in Podiatric Medicine and Surgery
https://www.readbyqxmd.com/read/28251260/intratendinous-adipose-derived-stromal-vascular-fraction-svf-injection-provides-a-safe-efficacious-treatment-for-achilles-tendinopathy-results-of-a-randomized-controlled-clinical-trial-at-a-6-month-follow-up
#9
Federico Giuseppe Usuelli, Miriam Grassi, Camilla Maccario, Marco Vigano', Luciano Lanfranchi, Umberto Alfieri Montrasio, Laura de Girolamo
PURPOSE: Although platelet-rich plasma (PRP) injection has shown controversial results for the treatment of Achilles tendinopathy, it remains the most used biological treatment. Recent findings seem to demonstrate that the stromal vascular fraction (SVF) within adipose tissue may counteract the impaired tendon homeostasis. The aim of this study was to prospectively compare the efficacy of PRP and SVF injection for the treatment of non-insertional Achilles tendinopathy. METHODS: Fourty-four patients were recruited in the study; 23 of them were assigned to the PRP group whereas 21 to the SVF group, treated unilaterally or bilaterally for a total of 28 tendons per group...
March 1, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28222571/the-edurep-approach-plus-manual-therapy-for-the-management-of-insertional-achilles-tendinopathy-a-case-report
#10
Francesco Sartorio, Anna Zanetta, Giorgio Ferriero, Elisabetta Bravini, Stefano Vercelli
BACKGROUND: Insertional Achilles tendinopathy (IAT) is a challenging overuse disorder. The aim of this case report was to study the feasibility of a comprehensive rehabilitative approach according to the Education, Unloading, Reloading, and Prevention (EdUReP) framework combined with Instrument-Augmented Soft Tissue Mobilization (I-ASTM). METHODS: An active 51-year-old man patient with chronic IAT was studied. Clinical assessment battery was composed by visual analogue scale for pain during the Achilles tendon palpation test, passive straight leg raise test, single leg hop test, Patient-Specific Functional Scale, and Foot and Ankle Ability Measure...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28217424/joint-mobilization-in-the-management-of-persistent-insertional-achilles-tendinopathy-a-case-report
#11
Dhinu J Jayaseelan, Andrew A Post, John J Mischke, Josiah D Sault
BACKGROUND & PURPOSE: Insertional Achilles tendinopathy (IAT) can be a challenging condition to manage conservatively. Eccentric exercise is commonly used in the management of chronic tendinopathy; however, it may not be as helpful for insertional tendon problems as compared to mid-portion dysfunction. While current evidence describing the physical therapy management of IAT is developing, gaps still exist in descriptions of best practice. The purpose of this case report is to describe the management of a patient with persistent IAT utilizing impairment-based joint mobilization, self-mobilization, and exercise...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28203584/plantaris-excision-reduces-pain-in-midportion-achilles-tendinopathy-even-in-the-absence-of-plantaris-tendinosis
#12
James D F Calder, Joanna M Stephen, C Niek van Dijk
BACKGROUND: It is becoming increasingly apparent that the plantaris can contribute to symptoms in at least a subset of patients with midportion Achilles tendinopathy. However, the nature of its involvement remains unclear. PURPOSE: To determine whether excised plantaris tendons from patients with midportion Achilles tendinopathy display tendinopathic changes and whether the presence of such changes affect clinical outcomes. STUDY DESIGN: Case series; Level of evidence, 4...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28194638/achilles-tendon-injuries
#13
REVIEW
Anthony C Egger, Mark J Berkowitz
PURPOSE OF REVIEW: The purpose of this study is to review the current literature of Achilles tendon injuries, specifically chronic tendinopathy and acute ruptures in regard to etiology, diagnosis, treatment options, and outcomes. RECENT FINDINGS: The incidence of Achilles tendon injuries is increasing, but the necessity for surgical intervention is decreasing due to improved conservative therapies, which may provide comparable outcomes without the implied surgical risk...
March 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28169151/value-of-quantitative-mri-parameters-in-predicting-and-evaluating-clinical-outcome-in-conservatively-treated-patients-with-chronic-midportion-achilles-tendinopathy-a-prospective-study
#14
J Tsehaie, D H J Poot, E H G Oei, J A N Verhaar, R J de Vos
OBJECTIVES: To evaluate whether baseline MRI parameters provide prognostic value for clinical outcome, and to study correlation between MRI parameters and clinical outcome. DESIGN: Observational prospective cohort study. METHODS: Patients with chronic midportion Achilles tendinopathy were included and performed a 16-week eccentric calf-muscle exercise program. Outcome measurements were the validated Victorian Institute of Sports Assessment-Achilles (VISA-A) questionnaire and MRI parameters at baseline and after 24 weeks...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28165813/piperine-ameliorates-collagenase-induced-achilles-tendon-injury-in-the-rat
#15
Fengyan Gong, Lifeng Cui, Xiaona Zhang, Xiangbo Zhan, Xu Gong, Yan Wen
Tendinopathy is a common clinical pathology found in athletes and workers with mixed treatment results. Piperine, a major alkaloid found in the black and long pepper, has been demonstrated to have variety of pharmacological properties such as analgesic and anti-inflammatory effects. The present study was designed to investigate the effects of piperine on collagenase-induced Achilles tendon injury. Rats were intratendineously injected with collagenase in the right Achilles tendon, followed by intragastrical administration of piperine (100 mg/kg)...
February 6, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28154823/ute-t2-%C3%A2-analysis-of-diseased-and-healthy-achilles-tendons-and-correlation-with-clinical-score-an-in-vivo-preliminary-study
#16
COMPARATIVE STUDY
Yang Qiao, Hong-Yue Tao, Kui Ma, Zi-Ying Wu, Jian-Xun Qu, Shuang Chen
Objective. To compare T2(⁎) value of healthy and diseased Achilles tendons (AT) with a recently introduced three-dimensional ultrashort echo time (3D-UTE) sequence and analyze the correlation between T2(⁎) value and clinical scores. Methods. Ten patients with symptomatic Achilles tendon and ten healthy volunteers were investigated with 3D-UTE sequence on a 3T magnetic resonance (MR) scanner. T2(⁎) values of four regions in Achilles tendons were calculated. The clinical outcomes of patients were evaluated according to the American Orthopaedic Foot and Ankle Society (AOFAS) score and Achilles Tendon Rupture Score (ATRS)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28150323/serial-changes-of-tendon-histomorphology-and-strain-elastography-after-induced-achilles-tendinopathy-in-rabbits-an-in-vivo-study
#17
Kyung-Sik Ahn, Nam Joon Lee, Chang Ho Kang, Young Hen Lee, Hae Jeong Jeon
OBJECTIVES: The purpose of this study was to investigate and compare the serial changes of morphology and strain in the early process of Achilles tendinopathy in a rabbit model. METHODS: A total of 10 New Zealand white rabbits underwent ligation of one of their Achilles tendons to induce ischemic injury. Both inflamed and contralateral Achilles tendons were serially evaluated with 3 follow-ups: the first on days 3 to 5, the second on days 9 to 13, and the third and last follow-up on days 15 to 20 after surgery...
February 2, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28149742/endoscopic-calcaneoplasty-and-achilles-tendoscopy-with-the-patient-in-supine-position
#18
Tun Hing Lui
Insertional and non-insertional Achilles tendinopathy is usually treated conservatively. Surgery is indicated if conservative treatment fails to relieve the pain. Endoscopic surgery has the advantages of less morbidity, a shorter operating time, reduced postoperative pain, and a lower rate of wound and soft-tissue healing problems. Patients will have a short recovery time and quickly resume work and sports because of less soft-tissue disruption. Moreover, the pathology can be better differentiated and precisely treated...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28145739/achilles-tendon-loading-during-heel-raising-and-lowering-exercises
#19
Andrew Revak, Keith Diers, Thomas W Kernozek, Naghmeh Gheidi, Christina Olbrantz
CONTEXT: Achilles tendinopathies are common injuries during sport participation, although men are more prone to Achilles tendon injuries than women. Heel-raising and -lowering exercises are typically suggested for Achilles tendon rehabilitation. OBJECTIVE: To compare the estimated Achilles tendon loading variables and the ankle range of motion (ROM) using a musculoskeletal model during commonly performed heel-raising and -lowering exercises. DESIGN: Controlled laboratory study...
February 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28139009/the-twisted-structure-of-the-achilles-tendon-unraveled-a-detailed-quantitative-and-qualitative-anatomical-investigation
#20
P A Pękala, B M Henry, A Ochała, P Kopacz, G Tatoń, A Młyniec, J A Walocha, K A Tomaszewski
The Achilles tendon (AT) consists of fibers originating from the soleus muscle (SOL), which lies deep, and the medial (GM) and lateral (GL) heads of the gastrocnemius muscle, which lie superficial. As the fibers descend toward the insertion of the AT, the individual subtendons twist around each other. The aim of this study was to investigate the twisted structure of the AT and its individual subtendons. Specimens of the AT, with preserved calcaneal bone and a fragment of the triceps surae muscle, were obtained from 53 fresh-frozen, male cadavers (n=106 lower limbs)...
January 30, 2017: Scandinavian Journal of Medicine & Science in Sports
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