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Tendon elastography

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https://www.readbyqxmd.com/read/29153963/shear-wave-elastography-swe-for-monitoring-of-treatment-of-tendinopathies-a-double-blinded-longitudinal-clinical-study
#1
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...
November 16, 2017: Academic Radiology
https://www.readbyqxmd.com/read/29147849/heterogeneity-of-passive-elastic-properties-within-the-quadriceps-femoris-muscle-tendon-unit
#2
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...
November 17, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29147741/achilles-tendon-elastic-properties-remain-decreased-in-long-term-after-rupture
#3
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
https://www.readbyqxmd.com/read/29044664/a-new-technique-of-surgical-planning-for-anterior-cruciate-ligament-reconstruction-feasibility-assessment-of-shear-wave-elastography-to-tendon-of-semitendinosus-muscle
#4
Yoshiaki Itoigawa, Yuji Takazawa, Yuichiro Maruyama, Keiichi Yoshida, Tatsuo Sakai, Koichiro Ichimura, Kazuo Kaneko
There is currently no method to quantify the quality of the harvested graft before anterior cruciate ligament (ACL) reconstruction. The purpose of the present study was to explore a method for measuring stiffness of the normal tendon of the semitendinosus muscle using shear wave elastography (SWE). Our investigation comprised two steps. First, we determined orientation of the semitendinosus tendon fibers in 20 lower legs of embalmed cadavers. Second, we investigated the feasibility of quantifying stiffness of the normal semitendinosus tendon by SWE in 24 subjects (48 legs: 24 male and 24 female subjects) in vivo...
October 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28987667/shear-wave-elastography-findings-of-de-quervain-tenosynovitis
#5
Rustu Turkay, Ercan Inci, Banu Aydeniz, Meltem Vural
OBJECTIVE: Our aim was to evaluate the feasibility of using shear wave elastography (SWE) to assess first extensor compartment tendons rigidity and its alterations with tenosynovitis. MATERIALS AND METHODS: We performed B-mode ultrasound and SWE to total number of 80 participants. All participants were evaluated clinically to call the diagnosis of de Quervain tenosynovitis or to rule out the diagnosis. We composed 2 groups. Group 1 included 40 healthy volunteers (33 females and 7 male participants with ages ranging from 24 to 60 years, median age was 37...
October 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28972291/achilles-and-patellar-tendinopathy-display-opposite-changes-in-elastic-properties-a-shear-wave-elastography-study
#6
Brooke Kaye Coombes, Kylie Tucker, Bill Vicenzino, Viana Vuvan, Rebecca Mellor, Luke Heales, Antoine Nordez, François Hug
PURPOSE: To compare tendon elastic and structural properties of healthy individuals with those with Achilles or patellar tendinopathy. METHODS: Sixty-seven participants (22 Achilles tendinopathy, 17 patellar tendinopathy, 28 healthy controls) were recruited between March 2015-March 2016. Shear wave velocity (SWV), an index of tissue elastic modulus, and tendon thickness were measured bilaterally at mid-tendon and insertional regions of Achilles and patellar tendons by an examiner blinded to group...
October 3, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28964064/assessing-the-mechanical-properties-of-anisotropic-soft-tissues-using-guided-wave-elastography-inverse-method-and-numerical-experiments
#7
Guo-Yang Li, Yanping Cao
Determining the mechanical properties of soft biological tissues can be of great importance. For example, the microstructures of many soft tissues, such as those of the human Achilles tendon, have been identified as typical anisotropic materials. This paper proposes an inverse approach that uses guided wave elastography to determine the anisotropic elastic and hyperelastic parameters of thin-walled transversely isotropic biological soft tissues. This approach was developed from the theoretical solutions for the dispersion relations of guided waves, which were derived based on a constitutive model suitable for describing the deformation behavior of such tissues...
September 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28829699/association-between-years-of-competition-and-shoulder-function-in-collegiate-swimmers
#8
Jack D Dischler, Timothy G Baumer, Evan Finkelstein, Daniel S Siegal, Michael J Bey
BACKGROUND: Shoulder injuries are common among competitive swimmers, and the progression of shoulder pathology is not well understood. The objective of this study was to assess the extent to which years of competitive swim training were associated with physical properties of the supraspinatus muscle and tendon, shoulder strength, and self-reported assessments of shoulder pain and function. HYPOTHESIS: Increasing years of competition will be associated with declining physical properties of the supraspinatus muscle/tendon and declining self-reported assessments of pain and function...
August 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28765991/ultrasound-elastography-in-tendon-pathology-state-of-the-art
#9
REVIEW
Romain Domenichini, Jean-Baptiste Pialat, Andrea Podda, Sébastien Aubry
Elastography assesses the biomechanical and structural properties of tissues by measuring their stiffness. Despite promising results, elastography has not yet earned its place in the daily practice of musculoskeletal radiologists. The purpose of this article is to present and examine the data available to date on ultrasound elastography of the tendons through a review of the literature to provide musculoskeletal radiologists with an overview that may help them better understand and use elastography routinely...
December 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28740756/sonographic-evaluation-of-the-immediate-effects-of-eccentric-heel-drop-exercise-on-achilles-tendon-and-gastrocnemius-muscle-stiffness-using-shear-wave-elastography
#10
Wilson K C Leung, K L Chu, Christopher Lai
BACKGROUND: Mechanical loading is crucial for muscle and tendon tissue remodeling. Eccentric heel drop exercise has been proven to be effective in the management of Achilles tendinopathy, yet its induced change in the mechanical property (i.e., stiffness) of the Achilles tendon (AT), medial and lateral gastrocnemius muscles (MG and LG) was unknown. Given that shear wave elastography has emerged as a powerful tool in assessing soft tissue stiffness with promising intra- and inter-operator reliability, the objective of this study was hence to characterize the stiffness of the AT, MG and LG in response to an acute bout of eccentric heel drop exercise...
2017: PeerJ
https://www.readbyqxmd.com/read/28731271/ultrasound-elastography-for-carpal-tunnel-pressure-measurement-a-cadaveric-validation-study
#11
Kazutoshi Kubo, Boran Zhou, Yu-Shiuan Cheng, Tai-Hua Yang, Bo Qiang, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Carpal tunnel pressure is a key factor in the etiology of carpal tunnel syndrome. Numerous approaches have been conducted to measure carpal tunnel pressure. However, most techniques are invasive and take time and effort. We have developed an innovative approach to noninvasively assess the tunnel pressure by using the ultrasound surface wave elastography (USWE) technique. In a previous study it was shown that the shear wave speed in a tendon increased linearly with increasing tunnel pressure enclosed the tendon in a simple tendon model...
July 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28707752/analysis-of-the-correlation-between-knee-extension-torque-and-patellar-tendon-elastic-property
#12
P Mannarino, K M M Lima, C R C Fontenelle, T T Matta, B F de Salles, R Simão, L F Oliveira
PURPOSE: Quadriceps strength and patellar tendon (PT) are directly linked and intimately related to daily activities and lower limb function. However, the correlation between knee extension torque (KT) and PT Young's modulus (E) measured directly is still unknown. METHOD: We used supersonic shearwave imaging (SSI) to evaluate the elastic property of PT in healthy young men and analysed its correlation with KT. Twenty-two healthy young males were included and both knees were examined...
July 14, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28680900/semitendinosus-tendon-for-acl-reconstruction-regrowth-and-mechanical-property-recovery
#13
Stephen M Suydam, Daniel H Cortes, Michael J Axe, Lynn Snyder-Mackler, Thomas S Buchanan
BACKGROUND: Semitendinosus/gracilis (STG) tendon autograft has been used effectively for restoring knee stability after anterior cruciate ligament (ACL) rupture. Though ACL reconstruction with STG autograft is an effective surgical technique for return to sports, short-term hamstring strength asymmetries exist after surgery. Although imaging evidence has demonstrated regrowth and reorganization of the semitendinosus (ST) tendon, no studies show whether the regrowth is associated with residual muscle function...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28657192/effects-of-age-and-pathology-on-shear-wave-speed-of-the-human-rotator-cuff
#14
Timothy G Baumer, Jack Dischler, Leah Davis, Yassin Labyed, Daniel S Siegal, Marnix van Holsbeeck, Vasilios Moutzouros, Michael J Bey
Rotator cuff tears are common and often repaired surgically, but post-operative repair tissue healing, and shoulder function can be unpredictable. Tear chronicity is believed to influence clinical outcomes, but conventional clinical approaches for assessing tear chronicity are subjective. Shear wave elastography (SWE) is a promising technique for assessing soft tissue via estimates of shear wave speed (SWS), but this technique has not been used extensively on the rotator cuff. Specifically, the effects of age and pathology on rotator cuff SWS are not well known...
June 28, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28656513/real-time-ultrasound-elastography-of-the-achilles-tendon-in-patients-with-cerebral-palsy-is-there-a-correlation-between-strain-ratio-and-biomechanical-indicators
#15
Mehmet Öztürk, Bahattin Sayinbatur
PURPOSE: Our aim was to comparatively investigate the strain ratio and thickness of the Achilles tendon in children with cerebral palsy (CP), and to elucidate whether there is a correlation between biomechanical features of the Achilles tendon and strain ratio. METHODS: A total of 155 participants (72 CP patients and 83 healthy controls) who underwent real-time elastography of both Achilles tendons were studied. A linear transducer (4.8-11.0 MHz) was used to obtain the images...
June 27, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28607322/assessment-of-the-mechanical-properties-of-the-muscle-tendon-unit-by-supersonic-shear-wave-imaging-elastography-a-review
#16
Kelly Mônica Marinho E Lima, José Francisco Silva Costa Júnior, Wagner Coelho de Albuquerque Pereira, Liliam Fernandes de Oliveira
This review aimed to describe the state of the art in muscle-tendon unit (MTU) assessment by supersonic shear wave imaging (SSI) elastography in states of muscle contraction and stretching, during aging, and in response to injury and therapeutic interventions. A consensus exists that MTU elasticity increases during passive stretching or contraction, and decreases after static stretching, electrostimulation, massage, and dry needling. There is currently no agreement regarding changes in the MTU due to aging and injury...
April 15, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28509432/feasibility-assessment-of-shear-wave-elastography-to-lumbar-back-muscles-a-radioanatomic-study
#17
Maud Creze, Krystel Nyangoh Timoh, Olivier Gagey, Laurence Rocher, Marie-France Bellin, Marc Soubeyrand
Low back pain is often associated with tensional changes in the paraspinal muscles detected by palpatory procedures. Shear wave elastography (SWE), recently introduced, allows the stiffness of muscles to be assessed noninvasively. The aim of this work was to study the feasibility of using SWE on the three main lumbar back muscles (multifidus, longissimus, and iliocostalis) in vivo after analyzing their muscular architecture ex vivo. We determined the orientation of fibers in the multifidus, longissimus, and iliocotalis muscles in seven fresh cadavers using gross anatomy and B-Mode ultrasound imaging...
May 16, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28493799/shear-wave-elastography-basic-physics-and-musculoskeletal-applications
#18
REVIEW
Mihra S Taljanovic, Lana H Gimber, Giles W Becker, L Daniel Latt, Andrea S Klauser, David M Melville, Liang Gao, Russell S Witte
In the past 2 decades, sonoelastography has been progressively used as a tool to help evaluate soft-tissue elasticity and add to information obtained with conventional gray-scale and Doppler ultrasonographic techniques. Recently introduced on clinical scanners, shear-wave elastography (SWE) is considered to be more objective, quantitative, and reproducible than compression sonoelastography with increasing applications to the musculoskeletal system. SWE uses an acoustic radiation force pulse sequence to generate shear waves, which propagate perpendicular to the ultrasound beam, causing transient displacements...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28465195/extensor-indicis-proprius-tendon-transfer-using-shear-wave-elastography
#19
J Lamouille, C Müller, S Aubry, S Bensamoun, W Raffoul, S Durand
The means for judging optimal tension during tendon transfers are approximate and not very quantifiable. The purpose of this study was to demonstrate the feasibility of quantitatively assessing muscular mechanical properties intraoperatively using ultrasound elastography (shear wave elastography [SWE]) during extensor indicis proprius (EIP) transfer. We report two cases of EIP transfer for post-traumatic rupture of the extensor pollicis longus muscle. Ultrasound acquisitions measured the elasticity modulus of the EIP muscle at different stages: rest, active extension, active extension against resistance, EIP section, distal passive traction of the tendon, after tendon transfer at rest and then during active extension...
March 7, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28418825/science-to-practice-quantitative-us-elastography-can-be-used-to-quantify-mechanical-and-histologic-tendon-healing-in-a-rabbit-model-of-achilles-tendon-transection
#20
Kenneth S Lee, Jack Martin, Darryl Thelen
Compression-based ultrasonographic (US) elastography is associated with time-dependent mechanical and histologic changes of the healing tendon in a transected rabbit model of the Achilles tendon. This finding will lead to continued development of quantitative US, which can be used to objectively assess a diseased or healing tendon. With advances in the method used, clinical translation of tendon elastography may enable clinicians to diagnose tendon damage and track healing, which should improve both treatment and outcome...
May 2017: Radiology
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