Exercise and Tendon Remodeling Mechanism

Tendons ◽  
2019 ◽  
Author(s):  
Rita de Cassia Marqueti ◽  
Ivo Vieira de Sousa Neto ◽  
Fabricio Reichert Barin ◽  
Gracielle Vieira Ramos
Keyword(s):  
Tendon Remodeling

scholarly journals Mechanoactive Scaffold Induces Tendon Remodeling and Expression of Fibrocartilage Markers

2008 ◽  
Vol 466 (8) ◽  
pp. 1938-1948 ◽  
Author(s):  
Jeffrey P. Spalazzi ◽  
Moira C. Vyner ◽  
Matthew T. Jacobs ◽  
Kristen L. Moffat ◽  
Helen H. Lu
Keyword(s):  
Tendon Remodeling

8D31 Mechanism of Tendon Remodeling

2012 ◽  
Vol 2012.24 (0) ◽  
pp. _8D31-1_-_8D31-2_
Author(s):  
Harukazu TOHYAMA ◽  
Kazunori YASUDA ◽  
Eiji KONDO ◽  
Eijiro MAEDA ◽  
Kozaburo HAYASHI
Keyword(s):  
Tendon Remodeling

Effects of aging and resistance training in rat tendon remodeling

2017 ◽  
Vol 32 (1) ◽  
pp. 353-368 ◽  
Author(s):  
Rita C. Marqueti ◽  
Joäo L. Q. Durigan ◽  
Anderson Josè S. Oliveira ◽  
Marcelo Shinyu Mekaro ◽  
Vinicius Guzzoni ◽  
...  
Keyword(s):  
Resistance Training ◽  
Effects Of Aging ◽  
Tendon Remodeling

scholarly journals Tendon structure quantified using ultrasound imaging differs based on location and training type

2018 ◽  
Vol 125 (6) ◽  
pp. 1743-1748 ◽  
Author(s):  
Kenton L. Hagan ◽  
Todd Hullfish ◽  
Ellen Casey ◽  
Josh R. Baxter
Keyword(s):  
Achilles Tendon ◽  
Patellar Tendon ◽  
Ultrasound Imaging ◽  
Ultrasound Images ◽  
Distance Runners ◽  
Specific Loading ◽  
Cross Country ◽  
Collagen Alignment ◽  
Tendon Remodeling ◽  
Tendon Collagen

Achilles tendinopathy is 10 times more common among running athletes compared with age-matched peers. Load-induced tendon remodeling and its progression in an at-risk population of developing symptomatic tendinopathy are not well understood. The purpose of this study was to prospectively characterize Achilles and patellar tendon structure in competitive collegiate distance runners over different competitive seasons using quantitative ultrasound imaging. Twenty-two collegiate cross-country runners and eleven controls were examined for this study. Ultrasound images of bilateral Achilles and patellar tendons were obtained near the start and end of the collegiate cross-country season and the conclusion outdoor track season. Collagen organization, mean echogenicity, tendon thickness, and neovascularity were determined using well-established image processing techniques. Achilles tendon collagen was less aligned in runners compared with controls (28% greater) but improved slightly (7% decrease) after the completion of the track season. Conversely, patellar tendons in runners were similar to control tendons throughout the cross-country season but underwent collagen alignment (17% decrease) and tendon hypertrophy (21% increase). Our findings indicate that Achilles tendon structure in trained runners differs structurally from control tendons but is stable throughout training while patellar tendon structure changes in response to the transition in training volume between cross-country and track seasons. These findings expand upon prior reports that some degree of tendon remodeling may act as a protective adaptation for sport specific loading. NEW & NOTEWORTHY In this study we prospectively examined the Achilles and patellar tendon structure of distance runners to determine if continued training through multiple seasons elicits tendon remodeling or pathology. We found that Achilles and patellar tendons respond uniquely to the changing loads required during each season. Achilles tendon collagen alignment is mostly stable throughout the competitive cycle, but the patellar tendon structurally remodels following the transition from cross-country to track season.

Microfragmented Adipose Tissue (M-FATS) for Improved Healing of Surgically Repaired Achilles Tendon Tears: A Preliminary Study

2020 ◽  
pp. 193864002097455
Author(s):  
Riccardo Ferracini ◽  
Stefano Artiaco ◽  
Walter Daghino ◽  
Mara Falco ◽  
Alessandra Gallo ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Achilles Tendon ◽  
Tendon Healing ◽  
Suture Repair ◽  
Foot And Ankle ◽  
Combined Application ◽  
Structural And Functional Properties ◽  
Preliminary Study ◽  
Tendon Remodeling ◽  
Control Study

Introduction Tendon healing is a complicated process that results in inferior structural and functional properties when compared with healthy tendon; the purpose of this study was to assess the effects of the adjunct of microfragmented adipose tissue (M-FATS) after the suture of a series of Achilles tendons. Methods After complete Achilles tendon tear, 8 patients underwent open suture repair in conjunction with perilesional application of a preparation of M-FATS rich in mesenchymal stem cells. Results were compared with a similar group of patients treated with conventional open suture. Outcomes were evaluated based on range of motion, functional recovery, and complications according to the American Orthopedic Foot and Ankle Society (AOFAS) score and Foot and Ankle Disability Index (FADI). Achilles tendons were examined by ultrasound (US) at 3 months. Results The AOFAS and FADI scores showed no differences between the 2 groups. US evaluation showed quicker tendon remodeling in the M-FATS group. Adverse events were not documented for both procedures. Conclusions The combined application of derived M-FATS for tendon rupture is safe and presents new possibilities for enhanced healing. Levels of Evidence Level IIIb: Case control study

Neural crest‐derived cells migrate from nerve to participate in Achilles tendon remodeling

2018 ◽  
Vol 26 (1) ◽  
pp. 54-63 ◽  
Author(s):  
Kang Xu ◽  
Xin Pan ◽  
Xuefeng Qiu ◽  
Dong Wang ◽  
Nianguo Dong ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Neural Crest ◽  
Tendon Remodeling

scholarly journals MR Imaging of the Achilles Tendon after Surgical Repair

2017 ◽  
Vol 11 (1) ◽  
pp. 697-703 ◽  
Author(s):  
Kwok Fai Tam ◽  
Tun Hing Lui
Keyword(s):  
Achilles Tendon ◽  
Surgical Repair ◽  
Healing Process ◽  
Scar Tissue ◽  
Tendon Tear ◽  
The Status ◽  
Healing Phase ◽  
Magnetic Resonance Imaging Mri ◽  
Tendon Remodeling ◽  
Early Healing

Achilles tendon tear is common and increasingly frequent. Magnetic resonance imaging (MRI) is the modality of choice for radiological evaluation. It is accurate to assess the status and integrity of the tendon with well documented features. In this article, the MR findings of a normal Achilles tendon as well as common diseases like insertional and noninsertional tendinosis, chronic tendinosis with marked lengthening, tendon rupture are illustrated. After a torn Achilles tendon receives surgical repair, it undergoes different stages of healing process including inflammatory, reparative and remodeling phases. Acute scar tissue in the surgical bed may share similar MR features of tendon re-rupture especially in the early healing phase because both are T2W hyperintense. The size of the gap may even appear larger than expected on T2W images possibly due to tendon remodeling. Understanding of the healing process in post-operative period may prevent overestimation of tendon gap and misdiagnosis of re-tear. We describe the MR features of the post-operative changes with serial studies in different months after surgery. The MR findings with the highlights of the expected sequential changes in normal healing process are illustrated in different cases. A case with surgical repair on a partial tear of Achilles tendon is also included.

scholarly journals Tendon Structure Quantified using Ultrasound Imaging Differs Based on Location and Training Type

2018 ◽  
Author(s):  
Kenton L. Hagan ◽  
Todd Hullfish ◽  
Ellen Casey ◽  
Josh R. Baxter
Keyword(s):  
Achilles Tendon ◽  
Patellar Tendon ◽  
Ultrasound Imaging ◽  
Structural Changes ◽  
Ultrasound Images ◽  
Distance Runners ◽  
Cross Sectional ◽  
Specific Loading ◽  
Cross Country ◽  
Tendon Remodeling

AbstractAchilles tendinopathy is ten-times more common amongst running athletes compared to age-matched peers. Load induced tendon remodeling and its progression in an at-risk population of developing symptomatic tendinopathy is not well understood. The purpose of this study was to prospectively characterize Achilles and patellar tendon structure in competitive collegiate distance runners over different competitive seasons using quantitative ultrasound imaging. Twenty-two collegiate cross country runners and eleven controls were examined for this study. Longitudinal and cross-sectional ultrasound images of bilateral Achilles and patellar tendons were obtained at the one week prior to start of formal collegiate cross country practices, one week after the conclusion of cross country season, and one week prior to outdoor track and field championships. Collagen organization, mean echogenicity, tendon thickness, and neovascularity were determined using well established image processing techniques. We found that Achilles and patellar tendons respond differently to high-volume running and transitions from one sport season to another, suggesting that tendon structure is sensitive to differences in tendon loading biomechanics. Our findings indicate that Achilles tendon structure in trained runners differ structurally to control tendons but is stable throughout training while patellar tendon structure changes in response to the transition in training volume between cross country and track seasons. These findings expand upon prior reports that some degree of tendon remodeling may act as a protective adaptation for sport specific loading.News and NoteworthyIn this study we prospectively examined the Achilles and patellar tendon structure of distance runners to determine if continued training through multiple seasons elicits tendon remodeling or pathology. We found that Achilles and patellar tendons respond uniquely to the changing loads required during each season. Achilles tendon collagen alignment is mostly stable throughout the competitive cycle, but the patellar tendon undergoes structural changes following the transition from cross-country to track season.

Effect of localized tendon remodeling on supraspinatus tear propagation

2020 ◽  
Vol 108 ◽  
pp. 109903
Author(s):  
Gerald A. Ferrer ◽  
Ronald N. Fortunato ◽  
Volker Musahl ◽  
Spandan Maiti ◽  
Richard E. Debski
Keyword(s):  
Supraspinatus Tear ◽  
Tear Propagation ◽  
Tendon Remodeling
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