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Achilles tendon repair

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https://www.readbyqxmd.com/read/29779989/achilles-tendon-augmented-repair-using-human-acellular-dermal-matrix-a-case-series
#1
Windy Cole, Brian Samsell, Mark A Moore
Achilles tendon ruptures are common in the general population, especially among members of the older demographic occasionally active in sports. Operative treatments provide a lower incidence of rerupture than do nonoperative treatments, although surgical complications remain a concern. The use of a human acellular dermal matrix to augment Achilles tendon repair might reduce the incidence of complications. In the present case series, we describe the outcomes of 9 patients who underwent Achilles tendon repair with acellular dermal matrix augmentation...
May 17, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29731123/the-improved-oval-forceps-suture-guiding-method-for-minimally-invasive-achilles-tendon-repair
#2
Yang Liu, Lixiang Lin, Chuanlu Lin, Qihao Weng, Jianjun Hong
OBJECTIVE: To discuss the effect and advantage of the improved oval forceps suture-guiding method combined with anchor nail in the treatment of acute Achilles tendon rupture. METHODS: A retrospective research was performed on 35 cases of acute Achilles tendon rupture treated with the improved oval forceps suture-guiding method from January 2013 to October 2016. Instead of the Achillon device, we perform the Achillon technique with the use of simple oval forceps, combined with absorbable anchor nail, percutaneously to repair the acute Achilles tendon rupture...
May 2, 2018: Injury
https://www.readbyqxmd.com/read/29721457/mechanoreceptors-of-the-achilles-tendon-a-histomorphological-study-in-pigs-with-clinical-significance-for-humans
#3
Stylianos Kapetanakis, Grigorios Gkasdaris, Eleni Daneva, Panagiotis Givissis, Jannis Papathanasiou, Theodoros Xanthos
Introduction: Tendons contain neurosensory elements called mechanoreceptors which contribute to the neuromuscular system as sources of reflex signals. The literature is lacking in histological assessment of mechanoreceptors of the Achilles tendon in piglets and our aim was to indicate their types, location and quantity. Methods: The study was performed using histological tissue samples from the Achilles tendon of ten healthy pigs, five left, five right, six males, four females...
October 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29706738/double-layer-reconstruction-of-the-achilles-tendon-using-a-modified-lindholm-s-technique-and-vascularized-fascia-lata
#4
Osman Kelahmetoglu, Mustafa Ekrem Gules, Nuh Mehmet Elmadag, Ethem Guneren, Selma Sonmez Ergun
Loss of the Achilles' tendon with overlying soft tissue and skin defects remains a complex reconstructive challenge. Herein we present our experience using a free composite anterolateral thigh (ALT) flap with vascularized fascia lata and a modified Lindholm's technique to repair the Achilles' tendon. A 37-year-old man suffered from tertiary Achilles' tendon rupture. For reconstruction, the free composite ALT flap with vascularized fascia lata was used to wrap Achilles' tendon. A modified Lindholm's technique was used to cover overlying soft tissue defects...
April 2018: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/29702290/construction-of-tendon-replacement-tissue-based-on-collagen-sponge-and-mesenchymal-stem-cells-by-coupled-mechano-chemical-induction-and-evaluation-of-its-tendon-repair-abilities
#5
Bingyu Zhang, Qing Luo, Bin Deng, Yasuyuki Morita, Yang Ju, Guanbin Song
Tissue engineering is an ideal therapeutic strategy for the development of functional tendon replacement tissue for tendon repair in the clinic. Currently, the synergistic roles of mechano-chemical factors and the mechanisms involved in tendon repair and regeneration are not fully understood. In this study, we developed a three-dimensional (3D) culture system based on a silicone chamber and collagen sponge scaffold that can deliver cyclic mechanical stretch and biochemical stimulation to bone marrow-derived mesenchymal stem cells (BMSCs) seeded on the scaffold...
April 24, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29685566/routine-use-of-low-molecular-weight-heparin-for-deep-venous-thrombosis-prophylaxis-after-foot-and-ankle-surgery-a-cost-effectiveness-analysis
#6
Richmond Robinson, T Craig Wirt, Carolina Barbosa, Arezou Amidi, Shirley Chen, Robert M Joseph, Adam E Fleischer
The purpose of the present study was to determine whether certain foot/ankle surgeries would benefit from the routine use of low-molecular-weight heparin (LMWH) as postoperative deep venous thrombosis prophylaxis. We conducted a formal cost-effectiveness analysis using a decision analytic tree to explore the healthcare costs and health outcomes associated with a scenario of no prophylaxis and a scenario of routine LMWH prophylaxis for 4 weeks. The 2 scenarios were compared for 5 procedures: (1) Achilles tendon repair (ATR), (2) total ankle arthroplasty (TAA), (3) hallux valgus surgery (HVS), (4) hindfoot arthrodesis (HA), and (5) ankle fracture surgery (AFS)...
May 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29678676/an-asymmetric-chitosan-scaffold-for-tendon-tissue-engineering-in-vitro-and-in-vivo-evaluation-with-rat-tendon-stem-progenitor-cells
#7
Erman Chen, Ling Yang, Chenyi Ye, Wei Zhang, Jisheng Ran, Deting Xue, Zhengke Wang, Zhijun Pan, Qiaoling Hu
The poor healing capacity and typically incomplete regeneration of injured tendons has made tendon repair as a primary clinical concern. Several methods for repairing injured tendons have been developed in the last decade. Tendon regeneration using current tissue engineering techniques requires advanced biomaterials to satisfy both microstructural and mechanical criteria. In this study, a novel chitosan (CS)-based scaffold with asymmetric structure was fabricated using a self-deposition technique. The fabricated scaffolds were assessed with regard to the microstructural and mechanical demands of cell ingrowth and the prevention of peritendinous adhesion...
April 17, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29674493/effect-of-electroacupuncture-stimulation-on-long-term-recovery-following-achilles-tendon-rupture-in-a-rat-model
#8
Miwa Imaeda, Tatsuya Hojo, Hiroshi Kitakoji, Kazuto Tanaka, Megumi Itoi, Motohiro Inoue
AIMS: In this study we examined the effect of electroacupuncture (EA) stimulation on the mechanical strength of the rat Achilles tendon after long-term recovery. METHODS: Using 20 rats, an Achilles tendon rupture model was created in an invasive manner. The rats were assigned to one of three groups, that received EA treatment (EA group), minimal acupuncture (MA group) or remained untreated (Control group). In the EA group, EA stimulation (5 ms, 50 Hz, 20 µA, 20 min) was applied to the rupture region over a period of 90 days (five times/week)...
April 19, 2018: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/29672913/knockout-of-hyaluronan-synthase-1-but-not-3-impairs-formation-of-the-retrocalcaneal-bursa
#9
Katie J Sikes, Kristen Renner, Jun Li, K Jane Grande-Allen, Jennifer P Connell, Valbona Cali, Ronald J Midura, John D Sandy, Anna Plaas, Vincent M Wang
Hyaluronan (HA), a high molecular weight non-sulfated glycosaminoglycan, is an integral component of the extracellular matrix of developing and mature connective tissues including tendon. There are few published reports quantifying HA content during tendon growth and maturation, or detailing its effects on the mechanical properties of the tendon extracellular matrix. Therefore, the goal of the current study was to examine the role of HA synthesis during post-natal skeletal growth and maturation, and its influence on tendon structure and biomechanical function...
April 19, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29672303/bevacizumab-improves-achilles-tendon-repair-in-a-rat-model
#10
Herbert Tempfer, Alexandra Kaser-Eichberger, Christine Lehner, Renate Gehwolf, Stefanie Korntner, Nadja Kunkel, Andrea Wagner, Moritz Gruetz, Ludwig M Heindl, Falk Schroedl, Andreas Traweger
BACKGROUND/AIMS: Effective wound-healing generally requires efficient re-vascularization after injury, ensuring sufficient supply with oxygen, nutrients, and various cell populations. While this applies to most tissues, tendons are mostly avascular in nature and harbor relatively few cells, probably contributing to their poor regenerative capacity. Considering the minimal vascularization of healthy tendons, we hypothesize that controlling angiogenesis in early tendon healing is beneficial for repair tissue quality and function...
April 16, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29658519/biomechanical-evaluation-of-tendon-connection-with-novel-suture-techniques
#11
Zhe Chen, Jun Wang, Jia-Sen Wei, Zhao-Yang Hou, Min Li, Qi-Xin Chen
PURPOSE: Achilles tendon rupture is a severe injury with poor curative effect due to its anatomical characteristic and mechanical peculiarity. Internal fixation of limited loop (IFLL) with steel-wire has been applied on patients with tendon rupture to fix the broken ends before physical rehabilitation. The purpose of this study is to investigate the biomechanical property and radiological characteristic of such suture technique for the repairment of tendon rupture. METHODS: Tendons of pigs' hint feet were separated for the biomechanical study...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29657473/risk-factors-for-complications-after-primary-repair-of-achilles-tendon-ruptures
#12
Christian A Pean, Anthony Christiano, William J Rubenstein, Sanjit R Konda, Kenneth A Egol
Purpose: To identify patient characteristics associated with adverse events in Achilles tendon rupture (ATR) surgical repair cases. Methods: A high risk (HR) cohort group of ATR patients were compared to healthy controls in the ACSNSQIP database with multivariate regression analysis. Results: Overall, 2% (n = 23) of the group sustained an AE postoperatively, most commonly superficial SSI (0.9%, n = 10). Multivariate analysis did not reveal any patient characteristics to be significantly associated with the occurrence of an AE or superficial SSI...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29622260/editorial-commentary-is-endoscopy-really-helpful-during-repair-of-acute-rupture-of-the-achilles-tendon
#13
EDITORIAL
Tun Hing Lui
Endoscopically assisted Achilles tendon repair is an attractive minimally invasive approach to reduce the risk of sural nerve injury. However, I do not believe that endoscopy is necessary for all types of minimally invasive Achilles tendon repair. Endoscopy is only helpful to make suture passage through the proximal lateral portal safe. It cannot help to reduce the risk of sural nerve injury if the tendon is repaired with percutaneous locking sutures. Abandonment of the proximal lateral portal and development of "all-inside" endoscopic repair of the Achilles tendon with locking sutures should be the future goal...
April 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29554516/short-term-functional-assessment-of-gait-plantarflexor-strength-and-tendon-properties-after-achilles-tendon-rupture
#14
Alison N Agres, Tobias J Gehlen, Adamantios Arampatzis, William R Taylor, Georg N Duda, Sebastian Manegold
BACKGROUND: Although early functional rehabilitation (EFR) has been suggested to yield rapid functional recovery after Achilles tendon rupture (ATR) compared to conventional rehabilitation (CR), most quantitative assessments occur long after rehabilitation has been completed. Few data exist regarding the short-term functional gains during the healing period post-ATR. It remains unclear if EFR allows for an objectively faster return to function. The aim of this study was to examine EFR's effect on gait, plantarflexor strength, and tendon properties in early post-operative follow-ups...
March 5, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29552483/a-percutaneous-knotless-technique-for-acute-achilles-tendon-ruptures
#15
Daniel J Liechti, Gilbert Moatshe, Jonathon D Backus, Daniel Cole Marchetti, Thomas O Clanton
Achilles tendon ruptures are a common tendon injury, usually occurring in middle-aged men during recreational sporting activities. Both nonoperative and operative management are employed to treat these injuries. Several operative treatments are described in the literature, including percutaneous Achilles repair, mini-open repair, and open repair. Open Achilles repair is associated with higher rates of impaired wound healing and infection, whereas minimally invasive techniques have been reported to have an increased risk of iatrogenic sural nerve injury...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29528724/outcome-of-percutaneous-fixation-of-acute-achilles-tendon-ruptures
#16
Meletis Rozis, Ioannis Benetos, Panagiotis Karampinas, Vasilios Polyzois, John Vlamis, Spyros Pneumaticos
BACKGROUND: Conservative treatment of an acute Achilles rupture remains a viable and acceptable option as does surgical fixation, with open and percutaneous repair consisting the main operative techniques. The purpose of this study was to compare the outcomes and complication rates of open versus percutaneous surgical procedures. METHODS: From 2009 to 2016, 131 patients were admitted to our department with clinically and radiologically confirmed acute Achilles tendon ruptures...
March 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29526155/local-application-of-tranexamic-acid-affects-tendon-healing-negatively-in-the-late-period
#17
Alper Çıraklı, Pınar Naile Gürgör, Erdal Uzun, Havva Erdem, Soner Çankaya, Orhan Baş
OBJECTIVES: This study aims to evaluate the potential adverse effects of tranexamic acid (TA) on tendon healing. MATERIALS AND METHODS: Twelve male Wistar-Albino rats (weighing 300 g to 350 g) were used in the study. Rats were divided into two groups. Right legs of the rats were determined as the TA group and left legs as the serum physiologic (SP) group. Bilateral Achilles tenotomy was performed and surgically repaired. For the right side, 1 mL of TA and for the left side, 1 mL of SP were applied...
April 2018: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/29526154/effects-of-low-molecular-weight-heparin-and-rivaroxaban-on-rat-achilles-tendon-healing
#18
Yılmaz Eren, Oktay Adanır, Yaşar Mahsut Dinçel, Erdinç Genç, Yunus Ziya Arslan, Aysel Çağlar
OBJECTIVES: This study aims to compare the histopathological and biomechanical effects of low molecular weight heparin (LMWH) and rivaroxaban, which are frequently used in orthopedic surgery for thromboembolic prophylaxis, on rat Achilles tendon healing. MATERIALS AND METHODS: In the study, 36 adult, male Sprague Dawley rats weighing between 300 g and 400 g were used. Three groups were formed including 12 rats in each. Achilles tendons of all rats were cut and repaired...
April 2018: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/29507095/transcription-factor-scleraxis-vitally-contributes-to-progenitor-lineage-direction-in-wound-healing-of-adult-tendon-in-mice
#19
Tomoya Sakabe, Keiko Sakai, Toru Maeda, Ataru Sunaga, Nao Furuta, Ronen Schweitzer, Takako Sasaki, Takao Sakai
Tendon is a dense connective tissue that transmits high mechanical forces from skeletal muscle to bone. The transcription factor scleraxis (Scx) is a highly specific marker of both precursor and mature tendon cells (tenocytes). Mice lacking scx exhibit a specific and virtually complete loss of tendons during development. However, the functional contribution of Scx to wound healing in adult tendon has not yet been fully characterized. Here, using ScxGFP -tracking and loss-of-function systems, we show in an adult mouse model of Achilles tendon injury that paratenon cells, representing a stem cell antigen-1 (Sca-1)-positive and Scx-negative progenitor subpopulation, display Scx induction, migrate to the wound site, and produce extracellular matrix (ECM) to bridge the defect, whereas resident tenocytes exhibit a delayed response...
April 20, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29505741/the-role-of-the-paratenon-in-achilles-tendon-healing-a-study-in-rats
#20
Sebastian A Müller, Christopher H Evans, Patricia E Heisterbach, Martin Majewski
BACKGROUND: The role of the paratenon in tendon healing is unknown. The present study compares healing in the presence or absence of the paratenon in an Achilles tendon defect model in rats. HYPOTHESIS: Resection of the paratenon impairs tendon healing. STUDY DESIGN: Controlled laboratory study. METHODS: Sixty skeletally mature Sprague Dawley rats were randomly assigned to either a resected paratenon (RP) group or an intact paratenon (IP) group...
April 2018: American Journal of Sports Medicine
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