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Tendon elastography

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https://www.readbyqxmd.com/read/29776820/mechanical-interaction-between-neighboring-muscles-in-human-upper-limb-evidence-for-epimuscular-myofascial-force-transmission-in-humans
#1
Yasuhide Yoshitake, Daiki Uchida, Kosuke Hirata, Dean L Mayfield, Hiroaki Kanehisa
To confirm the existence of epimuscular myofascial force transmission in humans, this study examined if manipulating joint angle to stretch the muscle can alter the shear modulus of a resting adjacent muscle, and whether there are regional differences in this response. The biceps brachii (BB: manipulated muscle) and the brachialis (BRA: resting adjacent muscle) were deemed suitable for this study because they are neighboring, yet have independent tendons that insert onto different bones. In order to manipulate the muscle length of BB only, the forearm was passively set at supination, neutral, and pronation positions...
June 6, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29743056/elasticity-standard-values-of-the-achilles-tendon-assessed-with-acoustic-radiation-force-impulse-elastography-on-healthy-volunteers-a-cross-section-study
#2
Jonas Wakker, Wolfgang Kratzer, Tilmann Graeter, Julian Schmidberger
BACKGROUND: To determine normal values for acoustic radiation force impulse (ARFI) shear wave elastography of the Achilles tendon. METHODS: Using the VTIQ mode with the Acuson S3000™ (Siemens Healthcare, Erlangen, Germany), we measured the shear wave velocity (SWV) in m/s and the diameter in mm of both Achilles tendons in 182 healthy volunteers. The tendon was displayed in a sagittal view with a relaxed tendon. The parameters were tested for correlations with the anthropometric data of the subjects, between the genders and different age groups, as well as information obtained from the history, such as smoking and sporting activities...
May 9, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29731324/comparison-of-two-ways-of-altering-carpal-tunnel-pressure-with-ultrasound-surface-wave-elastography
#3
Yu-Shiuan Cheng, Boran Zhou, Kazutoshi Kubo, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Higher carpal tunnel pressure is related to the development of carpal tunnel syndrome. Currently, the measurement of carpal tunnel pressure is invasive and therefore, a noninvasive technique is needed. We previously demonstrated that speed of wave propagation through a tendon in the carpal tunnel measured by ultrasound elastography could be used as an indicator of carpal tunnel pressure in a cadaveric model, in which a balloon had to be inserted into the carpal tunnel to adjust the carpal tunnel pressure. However, the method for adjusting the carpal tunnel pressure in the cadaveric model is not applicable for the in vivo model...
June 6, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29730686/evaluation-of-tendinosis-of-the-long-head-of-the-biceps-tendon-by-strain-and-shear-wave-elastography
#4
Mehmet Hamdi Sahan, Mikail Inal, Veysel Burulday, Turgut Kultur
AIM: To investigate strain (SE) and shear wave elastography (SWE) characteristics of the long head of the biceps tendon (LHBT) tendinosis in comparison with magnetic resonance imaging (MRI) findings. MATERIAL AND METHODS: Twenty patients with a MRI diagnosis of tendinosis and twenty healthy subjects with normal LHBT in MRI were prospectively examined by SE and SWE. SE color mapping was divided into four types in accordance with elasticity designs: type I predominantly blue (hardest tissue), type II predominantly blue-green (hard tissue), type III predominantly green (intermediate tissue), type IV predominantly green-yellow-red (soft tissue)...
May 2, 2018: Medical Ultrasonography
https://www.readbyqxmd.com/read/29685838/shear-wave-elastography-can-predict-passive-stiffness-of-supraspinatus-musculotendinous-unit-during-arthroscopic-rotator-cuff-repair-for-presurgical-planning
#5
Yoshiaki Itoigawa, Yuichiro Maruyama, Takayuki Kawasaki, Tomoki Wada, Keiichi Yoshida, Kai-Nan An, Kazuo Kaneko
PURPOSE: To determine the feasibility of shear wave elastography (SWE) with B-mode ultrasound in predicting the stiffness of the rotator cuff muscle before arthroscopic rotator cuff repair to evaluate the difficulty of the surgical procedure, as well as to compare SWE with the Goutallier stage on magnetic resonance imaging (MRI). METHODS: Thirty-eight patients with a full-thickness supraspinatus tear requiring arthroscopic rotator cuff repair participated. The Goutallier stage of fatty infiltration on MRI was measured before surgery, as was the SWE modulus of the anterior superficial, anterior deep, posterior superficial, and posterior deep (PD) regions of the supraspinatus muscle...
April 20, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29555756/muscle-tendon-length-and-force-affect-human-tibialis-anterior-central-aponeurosis-stiffness-in-vivo
#6
Brent James Raiteri, Andrew Graham Cresswell, Glen Anthony Lichtwark
The factors that drive variable aponeurosis behaviors in active versus passive muscle may alter the longitudinal stiffness of the aponeurosis during contraction, which may change the fascicle strains for a given muscle force. However, it remains unknown whether these factors can drive variable aponeurosis behaviors across different muscle-tendon unit (MTU) lengths and influence the subsequent fascicle strains during contraction. Here, we used ultrasound and elastography techniques to examine in vivo muscle fascicle behavior and central aponeurosis deformations of human tibialis anterior (TA) during force-matched voluntary isometric dorsiflexion contractions at three MTU lengths...
April 3, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29499741/does-elasticity-of-achilles-tendon-change-after-suture-applications-evaluation-of-repair-area-by-acoustic-radiation-force-impulse-elastography
#7
Yavuz Selim Karatekin, Bedri Karaismailoglu, Gokhan Kaynak, Tahir Ogut, Atilla Suleyman Dikici, Emel Ure Esmerer, Onder Aydingoz, Huseyin Botanlioglu
BACKGROUND: Achilles tendon injuries are one of the most common tendon injuries. Surgical treatment is preferred in young and active patients. Although there are studies which evaluate the repair area with magnetic resonance imaging and ultrasonography after surgical treatment, there are very few studies which analyzes the elasticity of the tendon by quantitative methods. ARFI (acoustic radiation force impulse) elastography is a simple and non-invasive method that can quantitatively measure the elasticity of the soft tissues...
March 2, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29411519/semitendinosus-and-patellar-tendons-shear-modulus-evaluation-by-supersonic-shearwave-imaging-elastography
#8
C R C Fontenelle, P Mannarino, F B D O Ribeiro, M A Milito, A C P Carvalho, L L Menegaldo, L F Oliveira
PURPOSE: Shear modulus (μ) is directly correlated to the tissue stiffness and can predict the tendon ultimate force to failure. With the knee extended 0° (K0), semitendinosus tendon (ST) is tensioned while patellar tendon (PT) is relaxed. At 80o , knee flexion (K80) tendons present an opposite stress pattern; however, the relation between ST and PT μ in both situations was not studied yet. METHOD: We accessed the μ of the ST and PT at 0o and 80o knee flexion by supersonic shear wave imaging (SSI) elastography from 18 healthy males...
February 7, 2018: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29399850/three-dimensional-shear-wave-elastography-of-skeletal-muscle-preliminary-study
#9
Li Yin, Ruigang Lu, Wen Cao, Lingling Zhang, Wenjing Li, Hong Sun, Ruijun Guo
OBJECTIVES: Two-dimensional (2D) shear wave elastography (SWE) can measure the elasticity of skeletal muscle, tendons, and ligaments. Three-dimensional (3D) SWE has been used to detect breast cancer but has not been applied to the musculoskeletal system. This study aimed to investigate whether 3D SWE could be used in skeletal muscles in vivo. METHODS: The study enrolled 20 healthy volunteers at Beijing Chaoyang Hospital from August to October 2016. Two-dimensional and 3D SWE scans were used to measure the Young modulus of the flexor carpi radialis in the relaxed state...
February 5, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29387649/side-to-side-differences-in-achilles-tendon-geometry-and-mechanical-properties-following-achilles-tendon-rupture
#10
Jennifer A Zellers, Daniel H Cortes, Patrick Corrigan, Laura Pontiggia, Karin Grävare Silbernagel
Background: Recovery of tendon structure has been suggested to play a role in clinical success following Achilles tendon rupture. The purpose of this study was to identify side-to-side differences in tendon geometry and mechanical properties following Achilles tendon rupture and investigate the relationship of tendon structure with clinical outcomes. Methods: Participants within 1 year post complete rupture were included. Tendon geometry and mechanical properties were quantified using B-mode ultrasound imaging and continuous shear wave elastography (cSWE)...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29371711/achilles-tendon-elasticity-decreases-with-intermittent-claudication-in-patients-by-acoustic-radiation-force-impulse-imaging-arfi
#11
Birnur Yilmaz
OBJECTIVE: To investigate the value of Acoustic Radiation Force Impulse elastography and its application in Achilles tendon elasticity of intermittent claudication due to lower extremity arterial ischaemia. METHODS: This prospective case-control study was conducted at the Department of Radiology, Faculty of Medicine, Baskent University, Istanbul, Turkey, from October 2015 to January 2016, and comprised bilateral Achilles tendons of patients with intermittent claudication and healthy individuals...
January 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29301166/normal-range-of-patellar-tendon-elasticity-using-the-sharewave-elastography-technique-an-in-vivo-study-in-normal-volunteers
#12
Alexandre Hardy, Camille Rodaix, Claudio Vergari, Raphael Vialle
In-vivo investigation of tendon mechanical properties in healthy subjects using Shear Wave Elastography (SWE) techniques is a relatively new field of study. This work aims to evaluate the elastic properties of the patellar tendon in various knee range of flexion. Twenty healthy adult subjects were enrolled in the study. Shear wave speed (SWS) in the patellar tendon was measured in three different positions: Knee extended, knee semi-flexed (30°), and knee flexed (90°). Mean shear modulus was 50.9 +- 33.1 kPa in knee extension position, 137...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29282062/supraspinatus-muscle-elasticity-measured-with-real-time-shear-wave-ultrasound-elastography-correlates-with-mri-spectroscopic-measured-amount-of-fatty-degeneration
#13
Fabian Gilbert, Detlef Klein, Andreas Max Weng, Herbert Köstler, Benedikt Schmitz, Jonas Schmalzl, Dirk Böhm
BACKGROUND: Fatty Degeneration (FD) of the rotator cuff muscles influences functional and anatomical outcome after rotator cuff repair. The MRI based estimation of fatty degeneration is the gold standard. There is some evidence that Ultrasound elastography (EUS) can detect local differences of tissue stiffness in muscles and tendons. Shear-wave elastography (SWE) was evaluated to determine the extent to which shear wave velocity was associated with measures of fatty degeneration. MRI-spectroscopic fat measurement was used as a reference to quantify the amount of fat in the muscle belly...
December 28, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29260258/reproducibility-of-shear-wave-elastography-measuresof-the-achilles-tendon
#14
Catherine Payne, Peter Watt, Mara Cercignani, Nick Webborn
OBJECTIVE: To assess the reproducibility of shear wave elastography (SWE) measures in the Achilles tendon (AT) in vivo. MATERIALS AND METHODS: Shear wave velocity (SWV) of 14 healthy volunteers [7 males, 7 females; mean age 26.5 ± 3.8 years, mean height 171.6 ± 10.9 cm, mean Victorian Institute of Sports Assessment Achilles questionnaire (VISA-A) score 99.4 ± 1.2] was measured with the foot relaxed and fixed at 90°. Data were collected over five consecutive measures and 5 consecutive days...
December 19, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29238251/the-acute-effects-of-static-and-cyclic-stretching-on-muscle-stiffness-and-hardness-of-medial-gastrocnemius-muscle
#15
Noriaki Maeda, Yukio Urabe, Shogo Tsutsumi, Shogo Sakai, Hironori Fujishita, Toshiki Kobayashi, Makoto Asaeda, Kazuhiko Hirata, Yukio Mikami, Hiroaki Kimura
This study aimed to clarify the acute effects of static stretching (SS) and cyclic stretching (CS) on muscle stiffness and hardness of the medial gastrocnemius muscle (MG) by using ultrasonography, range of motion (ROM) of the ankle joint and ankle plantar flexor. Twenty healthy men participated in this study. Participants were randomly assigned to SS, CS and control conditions. Each session consisted of a standard 5-minute cycle warm-up, accompanied by one of the subsequent conditions in another day: (a) 2 minutes static stretching, (b) 2 minutes cyclic stretching, (c) control...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29197911/intra-and-inter-observer-variation-and-accuracy-using-different-shear-wave-elastography-methods-to-assess-circumscribed-objects-a-phantom-study
#16
Gregor Seliger, Katharina Chaoui, Christian Kunze, Yasmina Dridi, Klaus-Vitold Jenderka, Andreas Wienke, Michael Tchirikov
AIMS: The elastic properties of circumscribed tissues (e.g., tendons, lymph nodes, prostates, brain tumors) are of considerable clinical interest. The purpose of this study was thus to compare the Intra-/Inter-observer variation and accuracy in vitro of point shear wave elastography (pSWE) with that of 2D-SWE and to assess 2D-SWE's precision with variable ROI (vROI) incircumscribed objects. MATERIAL AND METHODS: Round targets (Elasticity QA Phantom Model 049) were examined for varying degrees of stiffness (8, 14, 45, and 80 kPa) and diameters (20/10 mm)...
November 29, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/29193329/a-few-considerations-on-achilles-and-patellar-tendinopathy-display-opposite-changes-in-elastic-properties
#17
LETTER
C-H Wu
No abstract text is available yet for this article.
April 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29153963/shear-wave-elastography-swe-for-monitoring-of-treatment-of-tendinopathies-a-double-blinded-longitudinal-clinical-study
#18
Timm Dirrichs, Valentin Quack, Matthias Gatz, Markus Tingart, Björn Rath, Marcel Betsch, Christiane K Kuhl, Simone Schrading
RATIONALE AND OBJECTIVES: We aimed to investigate the diagnostic accuracy with which shear wave elastography (SWE) can be used to monitor response to treatment of tendinopathies, and to compare it to conventional ultrasound (US)-imaging methods (B-mode US (B-US) and power Doppler US (PD-US)). MATERIALS AND METHODS: A prospective Institutional Review Board-approved longitudinal study on 35 patients with 47 symptomatic tendons (17 Achilles-, 15 patellar-, and 15 humeral-epicondylar) who underwent standardized multimodal US and standardized clinical assessment before and after 6 months of treatment (tailored stretching exercise, sport break, and local Polidocanol) was carried out...
March 2018: Academic Radiology
https://www.readbyqxmd.com/read/29147849/heterogeneity-of-passive-elastic-properties-within-the-quadriceps-femoris-muscle-tendon-unit
#19
Brooke K Coombes, Brandon Ziegenfuss, Michael David, Rohitha Badya, Wolbert van den Hoorn, François Hug, Kylie Tucker
PURPOSE: The purpose of this study was to compare regional elastic properties between anterior and posterior regions of the patellar tendon, and individual quadriceps muscles, over a range of knee flexion angles. METHODS: An isokinetic dynamometer passively positioned the non-dominant knee of 19 young, healthy participants, at 25°, 40°, 55°, 70° and 85° flexion. Shear wave velocity (SWV, an index of tissue elasticity) was measured using ultrasound shear wave elastography in a relaxed (passive) state, confirmed by electromyography...
January 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29147741/achilles-tendon-elastic-properties-remain-decreased-in-long-term-after-rupture
#20
B Frankewycz, A Penz, J Weber, N P da Silva, F Freimoser, R Bell, M Nerlich, E M Jung, D Docheva, C G Pfeifer
PURPOSE: Rupture of the Achilles tendon results in inferior scar tissue formation. Elastography allows a feasible in vivo investigation of biomechanical properties of the Achilles tendon. The purpose of this study is to investigate the biomechanical properties of healed Achilles tendons in the long term. MATERIALS AND METHODS: Patients who suffered from Achilles tendon rupture were recruited for an elastographic evaluation. Unilateral Achilles tendon ruptures were included and scanned in the mid-substance and calcaneal insertion at least 2 years after rupture using shear wave elastography...
November 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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