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Achilles tendonitis

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https://www.readbyqxmd.com/read/28636429/autograft-versus-allograft-for-posterior-cruciate-ligament-reconstruction-an-updated-systematic-review-and-meta-analysis
#1
John W Belk, Matthew J Kraeutler, Justin M Purcell, Eric C McCarty
BACKGROUND: Multiple studies have demonstrated a higher risk of graft failure after anterior cruciate ligament reconstruction with allograft, but limited data are available comparing outcomes of posterior cruciate ligament reconstruction (PCLR) with autograft versus allograft. PURPOSE: To compare the clinical outcomes of autograft versus allograft for primary PCLR. STUDY DESIGN: Systematic review. METHODS: A systematic review was performed by searching PubMed, the Cochrane Library, and EMBASE to locate studies (level of evidence I-III) comparing clinical outcomes of autograft versus allograft in patients undergoing primary PCLR with the conventional transtibial technique...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28633783/a-biomechanical-analysis-of-interference-screw-versus-bone-tunnel-fixation-of-flexor-hallucis-longus-tendon-transfers-to-the-calcaneus
#2
George T Liu, B Christian Balldin, Jacob R Zide, Christopher T Chen
The flexor hallucis longus tendon transfer is commonly used to restore function in chronic Achilles tendon ruptures and chronic Achilles tendinopathy. The tendon is often secured to the calcaneus either through a bone tunnel or by an interference screw. We hypothesized that tenodesis using the bone tunnel method would be mechanically superior to interference screw fixation for flexor hallucis longus transfers. Eight matched pairs of cadaveric specimens were assigned randomly to the bone tunnel or interference screw technique and were loaded to failure...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28630760/treatment-of-hindfoot-and-ankle-pathologies-with-posterior-arthroscopic-techniques
#3
Tahir Ögüt, N Selcuk Yontar
The two-portal hindfoot arthroscopy is an effective procedure enabling direct visualisation of posterior ankle pathology with low invasiveness.An important stage of the hindfoot endoscopy is localisation of the flexor hallucis longus (FHL) tendon to protect the neurovascular bundle which is located just medial to it.Posterior ankle impingement syndrome and FHL tenosynovitis are common causes of posterior ankle pain and frequently occur together.Posteriorly localised talar osteochondral lesions, Achilles tendon disorders, osteoarthritis, talar bone cysts and talar fractures are among the other pathologies that can be treated with hindfoot arthroscopy...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28629082/influence-of-residual-composition-on-the-structure-and-properties-of-extracellular-matrix-derived-hydrogels
#4
Jesús A Claudio-Rizo, Magdalena Rangel-Argote, Laura E Castellano, Jorge Delgado, José L Mata-Mata, Birzabith Mendoza-Novelo
In this work, hydrolysates of extracellular matrix (hECM) were obtained from rat tail tendon (TR), bovine Achilles tendon (TAB), porcine small intestinal submucosa (SIS) and bovine pericardium (PB), and they were polymerized to generate ECM hydrogels. The composition of hECM was evaluated by quantifying the content of sulphated glycosaminoglycans (sGAG), fibronectin and laminin. The polymerization process, structure, physicochemical properties, in vitro degradation and biocompatibility were studied and related to their composition...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28620014/the-tendinopathic-achilles-tendon-does-not-remain-iso-volumetric-upon-repeated-loading-insights-from-3d-ultrasound
#5
Leila Nuri, Steven J Obst, Richard Newsham-West, Rod S Barrett
Mid-portion Achilles tendinopathy (MAT) alters the normal three-dimensional (3D) morphology of the Achilles tendon (AT) at rest and under a single tensile load. However, how MAT changes the 3D morphology of AT during repeated loading remains unclear. This study compared the AT longitudinal, transverse and volume strains during repeated loading in MAT with those of the contralateral tendon in people with unilateral MAT. Ten adults with unilateral MAT performed 10 successive 25 second submaximal (50%) voluntary isometric plantarflexion contractions with both legs...
June 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28617627/effect-of-position-time-in-the-season-and-playing-surface-on-achilles-tendon-ruptures-in-nfl-games-a-2009-10-to-2016-17-review
#6
Michael K Krill, James R Borchers, Joshua T Hoffman, Matthew L Krill, Timothy E Hewett
OBJECTIVES: Achilles tendon (AT) ruptures are a potentially career-altering and ending injury. Achilles tendon ruptures have a below average return-to-play rate compared to other common orthopaedic procedures for National Football League (NFL) players. The objective of this study was to monitor the incidence and injury rates (IR) of AT ruptures that occurred during the regular season in order to evaluate the influence of player position, time of injury, and playing surface on rupture rates...
June 15, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28616759/is-dual-semitendinosus-allograft-stronger-than-turndown-for-achilles-tendon-reconstruction-an-in-vitro-analysis
#7
Michael C Aynardi, Lara C Atwater, Roshan Melvani, Brent G Parks, Adrian G Paez, Stuart D Miller
BACKGROUND: Large Achilles tendon defects pose a treatment challenge. The standard treatment with a turndown flap requires a large extensile incision, puts the sural nerve at risk, and demands slow, careful rehabilitation. Dual allograft semitendinosus reconstruction is a new clinical alternative that has the theoretical advantages of a smaller incision, less dissection, and a stronger construct that may allow for faster rehabilitation. QUESTIONS/PURPOSES: In a cadaver biomechanical model, we compared the dual allograft semitendinosus reconstruction with the myofascial turndown in terms of (1) mechanical strength and resistance to deformation and (2) failure mechanisms in reconstruction of large segmental Achilles defects...
June 14, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28615040/immunohistochemical-and-immunocytochemical-study-of-mechanoreceptors-in-anterior-cruciate-ligament-reconstruction-with-the-remnant-preserving-technique-using-achilles-tendon-allografts
#8
Keun Churl Chun, Sung Hyun Lee, Jeong Woo Kim, Eun Jung Jin, Kwang Mee Kim, Churl Hong Chun
BACKGROUND: Attempts have been made to validate the significance of remnant preservation with anterior cruciate ligament (ACL) reconstruction using immunohistochemical and immunocytochemical techniques. The purpose of this study was to examine the expression of mechanoreceptors in the remnant tissue of ACL reconstruction performed with the remnant-preserving technique. METHODS: Tissue samples were obtained from 10 patients who underwent ACL reconstruction with the remnant-preserving technique...
June 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28611857/chronic-achilles-tendon-rupture-reconstruction-using-the-lindholm-method-and-the-vulpius-method
#9
Firat Ozan, Fatih Dogar, Kaan Gurbuz, Yakup Ekinci, Semmi Koyuncu, Hazim Sekban
BACKGROUND: We investigated the clinical and functional outcomes of chronic Achilles tendon rupture reconstruction via the Lindholm technique and via the Vulpius' lengthening of the gastrocnemius. METHODS: We evaluated 15 patients with chronic Achilles tendon rupture (Lindholm technique in eight patients and primary repair with the Vulpius technique in seven patients). In the final follow-up, the Hooker scale was used to measure the ankle functional capacity in all patients...
July 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28607938/biomechanical-head-to-head-comparison-of-2-sutures-and-the-giftbox-versus-bunnell-techniques-for-midsubstance-achilles-tendon-ruptures
#10
Rufus O Van Dyke, Sejul A Chaudhary, Gregory Gould, Roman Trimba, Richard T Laughlin
BACKGROUND: Acute midsubstance Achilles tendon ruptures are a common orthopaedic problem for which the optimal repair technique and suture type remain controversial. Head-to-head comparisons of current fixation constructs are needed to establish which stitch/suture combination is most biomechanically favorable. HYPOTHESIS: Of the tested fixation constructs, Giftbox repairs with Fiberwire will exhibit superior stiffness and strength during biomechanical testing. STUDY DESIGN: Controlled laboratory study...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28606791/chondrolipoma-of-the-ankle-in-a-child-a-case-report
#11
Takuya Ishibashi, Jun Nishio, Shunsuke Kobayashi, Kei Shiramizu, Takuaki Yamamoto
Chondrolipoma is an extremely rare variant of lipoma with cartilaginous metaplasia. The presence of nonlipomatous components can lead to a variety of entities in the differential diagnosis from the radiologic findings. We describe an unusual case of a chondrolipoma occurring in the right ankle of a 9-year-old female. Physical examination showed a 3.5-cm, elastic-hard, poorly mobile, nontender mass adherent to the Achilles tendon. Plain radiographs revealed a faintly calcified soft tissue mass without bone involvement...
June 9, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28603874/impact-of-rest-duration-on-achilles-tendon-structure-and-function-following-isometric-training
#12
C M Waugh, T Alktebi, A de Sa, A Scott
Intervention programs are often sought to strengthen the Achilles tendon (AT) due to its high injury rate. Long rest periods between loading cycles have been found to increase collagen synthesis by tenocytes, suggesting rest duration may be important for tendon adaptation in vivo, however exercise programs comparing long and short rest duration have not been directly compared. Fourteen adults completed a 12-week progressive training intervention; training sessions consisted of 5 x 10 isometric plantarflexion contractions each of 3-s duration performed at 90% of MVC three times weekly...
June 12, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28601938/enhanced-gap-junction-intercellular-communication-inhibits-catabolic-and-pro-inflammatory-responses-in-tenocytes-against-heat-stress
#13
Eijiro Maeda, Shunsuke Kimura, Masahiko Yamada, Masataka Tashiro, Toshiro Ohashi
Elevation of tendon core temperature during severe activity is well known. However, its effects on tenocyte function have not been studied in detail. The present study tested a hypothesis that heat stimulation upregulates tenocyte catabolism, which can be modulated by the inhibition or the enhancement of gap junction intercellular communication (GJIC). Tenocytes isolated from rabbit Achilles tendons were subjected to heat stimulation at 37 °C, 41 °C or 43 °C for 30 min, and changes in cell viability, gene expressions and GJIC were examined...
June 10, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28594504/achilles-tendon-rupture-in-elite-athletes
#14
Michael Isiah Sandlin, Cyrus E Taghavi, Timothy P Charlton
The management of acute Achilles tendon rupture in elite athletes is a current area of clinical controversy. Recent studies have reported near-equivocal outcomes in patients who undergo either nonsurgical or surgical treatment of Achilles tendon rupture; however, similar functional outcomes may not be observed in elite athletes who are at the highest levels of athletic performance and undergo nonsurgical or surgical treatment of Achilles tendon rupture. Surgeons should understand the risks and benefits of nonsurgical and surgical management of acute Achilles tendon rupture...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28590052/clinical-report-a-patient-with-a-late-diagnosis-of-cerebrotendinous-xanthomatosis-and-a-response-to-treatment
#15
Ahmad Alhariri, Katherine Hamilton, Vikash Oza, Kelly Cordoro, Nara L Sobreira, Mary Malloy, Anne Slavotinek
Cerebrotendinous xanthomatosis (CTX) is a rare, autosomal recessive, inborn error of bile acid metabolism characterized by diarrhea in infancy, juvenile cataracts in childhood, tendon xanthomas developing in the second to third decades of life, and progressive neurologic dysfunction in adulthood. The condition is caused by mutations in the CYP27A1 gene that result in decreased production of chenodeoxycholic acid (CDCA) and elevated levels of cholestanol and bile alcohols. We present a 36-year-old male of Han ethnicity who developed xanthomas of his Achilles tendons and suffered neurocognitive declines and gait deterioration in his second decade...
June 7, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28587393/effects-of-hypoxia-on-differentiation-of-menstrual-blood-stromal-stem-cells-towards-tenogenic-cells-in-a-co-culture-system-with-achilles-tendon-cells
#16
Yijing Zheng, Yifei Zhou, Xiaolei Zhang, Yuemiao Chen, Xuhao Zheng, Tao Cheng, Chaonan Wang, Xuqi Hu, Jianjun Hong
Achilles tendons have a very poor capacity for intrinsic regeneration. The cell-based treatment strategy for Achilles tendinitis includes the application of mesenchymal stem cells (MSCs), which have high proliferative and multipotent differentiation ability, and is a promising approach. The aim of the present study was to explore the tenogenic potential of human menstrual blood stromal stem cells (MenSCs) in a co-culture system and to compare the tenogenic capability under normoxic and hypoxic conditions. MenSCs were co-cultured indirectly with Achilles tendon cells in a Transwell co-culture system for 1, 2, or 3 weeks in two different concentrations of oxygen (20 and 2% O2), whereas the control contained only MenSCs...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28587363/local-influence-of-high-molecular-polyethylene-particles-on-heterotopic-ossification
#17
Lin-Ru Zeng, Fang-Bing Zhu, Jian-Yue Wang, Qiao Hou, Zhen-Shuang Yue, Shi-Gui Yan, Ren-Fu Quan, Ying-Liang Zhang
We studied the effect of molecular polyethylene particles on local heterotopic ossification. A total of 36 healthy Sprague-Dawley rats were randomly divided into the control group (n=18) and the observation group (n=18). High molecular polyethylene particles were injected to rupture Achilles tendon position in the observation group, and normal saline was injected in the control group. X-ray examinations were conducted on Achilles tendon in the 4th, 8th and 12th week after operation. The incidence rate of heterotopic ossification was evaluated, and bone trabecula morphological structure was studied under optical microscope after hematoxylin and eosin staining...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28579818/healing-of-achilles-tendon-partial-tear-following-focused-shockwave-a-case-report-and-literature-review
#18
Yu-Chun Hsu, Wei-Ting Wu, Ke-Vin Chang, Der-Sheng Han, Li-Wei Chou
Achilles tendinopathy is a common cause of posterior heel pain and can progress to partial tendon tear without adequate treatment. Effects of traditional treatments vary, and many recent reports focus on the use of extracorporeal shockwave therapy (ESWT) for Achilles tendinopathy but not for Achilles tendon partial tear. Here, we report the case of a 64-year-old female suffering from severe left heel pain for half a year. All treatment and rehabilitation were less effective until ESWT was applied. Each course of focused shockwave therapy included 2500 shots with energy flux density from 0...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28579127/peritenolysis-and-debridement-for-main-body-mid-portion-achilles-tendinopathy-in-athletic-patients-results-of-107-procedures
#19
Amol Saxena, Brian K Hong, Deann Hofer
Achilles tendinopathy in the main body (mid-portion) of the tendon is a common pathologic finding among active and athletic populations and can be debilitating without proper and adequate treatment. Numerous surgical approaches for this common pathologic finding have been reported, with variable outcomes. We evaluated the surgical outcomes of peritenolysis and debridement of main body Achilles tendinopathy among athletic populations using the return to activity (RTA) and decreased desired activity (DDA) as our primary outcome measures...
May 31, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28578139/altered-leverage-around-the-ankle-in-people-with-diabetes-a-natural-strategy-to-modify-the-muscular-contribution-during-walking
#20
Milos Petrovic, Kevin Deschamps, Sabine M Verschueren, Frank L Bowling, Constantinos N Maganaris, Andrew J M Boulton, Neil D Reeves
Diabetes patients display gait alterations compared to controls including a higher metabolic cost of walking. This study aimed to investigate whether differences in external moment arm (ExtMA) and effective mechanical advantage (EMA) at the ankle in diabetes patients could partly explain the increased cost of walking compared to controls. Thirty one non-diabetic controls (Ctrl); 22 diabetes patients without peripheral neuropathy (DM) and 14 patients with moderate/severe diabetic peripheral neuropathy (DPN) underwent gait analysis using a motion analysis system and force plates...
May 19, 2017: Gait & Posture
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