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https://www.readbyqxmd.com/read/28814004/biomimetic-finger-extension-mechanism-for-soft-wearable-hand-rehabilitation-devices
#1
Dong Hyun Kim, Si-Hwan Heo, Hyung-Soon Park
For the rehabilitation and assistance of the hand functions, wearable devices have been developed, and the interest in tendon driven mechanisms have especially increased since it allows light weight and compact design. The tendon driven hand rehabilitation devices provides grasping force via exo-tendons routed on the dorsal and palmar sides of the hand pulled by remotely located actuators. However, most of the devices were not able to provide natural joint extension sequence of the finger and showed hyperextension of finger joints because the tendons for extension were fixed at the fingertip, concentrating the torque at the distal interphalangeal joint...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813788/a-novel-pneumatic-stimulator-for-the-investigation-of-noise-enhanced-proprioception
#2
Anna-Maria Georgarakis, Harshal A Sonar, Mike D Rinderknecht, Olivier Lambercy, Bernard J Martin, Verena Klamroth-Marganska, Jamie Paik, Robert Riener, Jaime E Duarte
Executing coordinated movements requires that motor and sensory systems cooperate to achieve a motor goal. Impairment of either system may lead to unstable and/or inaccurate movements. In rehabilitation training, however, most approaches have focused on the motor aspects of the control loop. We are examining mechanisms that may enhance the sensory system to improve motor control. More precisely, the effects of stochastic subliminal vibratory tactile stimulation on wrist proprioception. We developed a device - based on a novel soft pneumatic actuator skin technology - to stimulate multiple sites simultaneously and independently...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28809705/effects-of-continuous-kinaesthetic-feedback-based-on-tendon-vibration-on-motor-imagery-bci-performance
#3
M Barsotti, D Leonardis, N Vanello, M Bergamasco, A Frisoli
BACKGROUND AND OBJECTIVES: Feedback plays a crucial role for using Brain Computer Interface (BCI) systems. This study proposes the use of vibration-evoked kinaesthetic illusions as part of a novel multisensory feedback for a Motor Imagery (MI) based BCI and investigates its contributions in terms of BCI performance and electroencephalographic (EEG) correlates. METHODS: Sixteen subjects performed two different right arm MI-BCI sessions: with the visual feedback only and with both visual and vibration-evoked kinaesthetic feedback, conveyed by the stimulation of the biceps brachi tendon...
August 14, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28807348/a-biomechanical-comparison-between-asymmetric-pennington-technique-and-conventional-core-suture-techniques-6-strand-flexor-tendon-repair
#4
Naoya Kozono, Takamitsu Okada, Naohide Takeuchi, Takeshi Shimoto, Hidehiko Higaki, Yasuharu Nakashima
PURPOSE: To evaluate the fatigue strength and gap sizes of the asymmetric Pennington technique compared with 2 conventional 6-strand core suture techniques: the triple-looped suture and the Yoshizu #1. METHODS: We recorded the fatigue strength (forces × cycles) and gap sizes of a 6-strand flexor tendon repair with different core suture techniques under cyclic loading in 30 porcine tendons. The asymmetric Pennington technique was performed with a Pennington repair of equal suture purchase in the 2 tendon stumps, with the 2 other Pennington repairs shifted by 3 mm, respectively, along the longitudinal axis of the tendon in relation to the first Pennington repair...
August 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28766150/acute-and-chronic-neuromuscular-adaptations-to-local-vibration-training
#5
REVIEW
Robin Souron, Thibault Besson, Guillaume Y Millet, Thomas Lapole
Vibratory stimuli are thought to have the potential to promote neural and/or muscular (re)conditioning. This has been well described for whole-body vibration (WBV), which is commonly used as a training method to improve strength and/or functional abilities. Yet, this technique may present some limitations, especially in clinical settings where patients are unable to maintain an active position during the vibration exposure. Thus, a local vibration (LV) technique, which consists of applying portable vibrators directly over the tendon or muscle belly without active contribution from the participant, may present an alternative to WBV...
August 1, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28766051/real-time-muscle-state-estimation-from-emg-signals-during-isometric-contractions-using-kalman-filters
#6
Luciano L Menegaldo
State-space control of myoelectric devices and real-time visualization of muscle forces in virtual rehabilitation require measuring or estimating muscle dynamic states: neuromuscular activation, tendon force and muscle length. This paper investigates whether regular (KF) and extended Kalman filters (eKF), derived directly from Hill-type muscle mechanics equations, can be used as real-time muscle state estimators for isometric contractions using raw electromyography signals (EMG) as the only available measurement...
August 1, 2017: Biological Cybernetics
https://www.readbyqxmd.com/read/28764279/to-evaluate-the-effectiveness-of-tbts-a-novel-device-to-do-self-stretching-of-gastroc-soleus-muscle-in-patients-with-equinus-deformity
#7
Tufail Muzaffar, Abdul Hamid Rather, Kaleem Ul Haque, Sheikh Javeed Ahmad
INTRODUCTION: Various methods have been used for management of equinus deformity. However, stretching gastroc-soleus muscle and achilles tendon is a difficult task. It is labour intensive, which makes the provision of treatment difficult for many patients. AIM: To study the effectiveness of Tension Bar Tendon Stretch (TBTS) compared to conventional stretching in patients with equinus deformity in terms of improvement in equinus angle and spasticity. MATERIALS AND METHODS: A prospective randomised case control study was done on 16 patients of both the sexes in the age group four years to 56 years...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28755470/the-role-of-mechanobiology-in-progression-of-rotator-cuff-muscle-atrophy-and-degeneration
#8
Michael C Gibbons, Anshuman Singh, Adam J Engler, Samuel R Ward
Rotator cuff (RC) muscles undergo several detrimental changes following mechanical unloading resulting from RC tendon tear. In this review, we highlight the pathological causes and consequences of mechanical alterations at the whole muscle, muscle fiber, and muscle resident cell level as they relate to RC disease progression. In brief, the altered mechanical loads associated with RC tear lead to architectural, structural, and compositional changes at the whole-muscle and muscle fiber level. At the cellular level, these changes equate to direct disruption of mechanobiological signaling, which is exacerbated by mechanically regulated biophysical and biochemical changes to the cellular and extra-cellular environment (also known as the stem cell "niche")...
July 29, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28753397/lateral-meniscal-allograft-transplant-via-a-medial-approach-leads-to-less-extrusion
#9
Nam-Hong Choi, Jeong-Ki Choi, Bong-Seok Yang, Doe-Hyun Lee, Brian N Victoroff
BACKGROUND: Accurate positioning of the bony bridge is crucial to prevent extrusion of meniscal allografts after transplant. However, oblique or lateralized placement of the bony bridge of the lateral meniscal allograft may occur due to technical error or a limited visual field. The patellar tendon may be an obstacle to approaching the anterior horn of the lateral meniscus, resulting in a laterally placed allograft. Therefore, lateral meniscal transplant through a medial arthrotomy would be an alternative approach...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28750980/successful-treatment-of-rotator-cuff-tear-using-fascial-manipulation-%C3%A2-in-a-stroke-patient
#10
Marco Pintucci, Marcel Simis, Marta Imamura, Elisa Pratelli, Antonio Stecco, Levent Ozcakar, Linamara Rizzo Battistella
Rotator cuff tear is a common disease affecting patients after stroke. It's a cause of pain and dysfunction that may compromise normal stroke rehabilitation. For many cases there is still controversy between whether to use surgical or conservative intervention. Treatment for cuff tears range from physical therapy to surgery. This paper describes for the first time the effect of Fascial Manipulation(®) (FM(®)) on rotator cuff tear in a post stroke patient. A 69 year old female stroke patient with full absence of distal components of the tendons of the rotator cuff, functional limitations on active movement of shoulder flexion and abduction of the left arm and perceived pain scored 10/10 on the Visual Analogic Scale, was assessed and treat with one session of FM(®) A basic theory that explains the healing results of FM(®) is that mechanoreceptors, such as spindle cells and other receptors, are located in the deep fascia and activated when movement are performed...
July 2017: Journal of Bodywork and Movement Therapies
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
#11
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/28736078/patellar-tendon-in-vivo-regional-strain-with-varying-knee-angle
#12
Stephen J Pearson, Azlan S A Mohammed, Syed R Hussain
PURPOSE: Descriptive data on the aspects of site specific in vivo tendon strain with varying knee joint angle are non-existent. The present study determines and compares surface and deep layer strain of the patellar tendon during isometric contractions across a range of knee joint angles. METHODS: Male participants (age 22.0±3.4) performed ramped isometric knee extensions at knee joint angles of 90°, 70°, 50° and 30° of flexion. Strain patterns of the anterior and posterior regions of the patellar tendon were determined using real-time B-mode ultrasonography at each knee joint angle...
July 8, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28728940/silicone-infusion-tubing-instead-of-hunter-rods-for-two-stage-zone%C3%A2-2-flexor-tendon-reconstruction-in-a-resource-limited-surgical-environment
#13
K Kibadi, F Moutet
The authors describe their experience using silicone infusion tubing in place of Hunter rods for two-stage zone 2 flexor tendon reconstruction in a resource-limited surgical environment. This case report features a 47-year-old, right-handed man who had no active PIP and DIP joint flexion in four fingers of the right hand 5 months after an injury. During the first repair stage, the A2 and A4 pulleys were reconstructed using an extensor retinaculum graft. An infusion tube was inserted instead of Hunter rods...
July 17, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28717615/outcomes-of-prolotherapy-for-intra-tendinous-achilles-tears-a-case-series
#14
Otto Chan, Ben Havard, Sarah Morton, Mel Pritchard, Nicola Maffulli, Tom Crisp, Nat Padhiar, Jeremy David Perry, John King, Dylan Morrissey
BACKGROUND: The intra-tendinous tear is a new pathology that is defined as a discontinuity of fibres situated entirely within the tendon. Prolotherapy involves injecting an irritant, such as hyperosmolar dextrose, to stimulate a tissue healing response and ultimately reduce pain. METHODS: 43 consecutive patients diagnosed with an intra-tendinous tear were included (27 males: 16 females, mean (SD) age 41 (11.3). Patients were injected with 0.4ml-1.5ml (mean 0.8ml) of 50% dextrose and 0...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28717614/activity-level-recovery-after-acute-achilles-tendon-rupture-surgically-repaired-a-series-of-29-patients-with-a-mean-follow-up-of-46-months
#15
Richard Zayni, Raphaël Coursier, Moudasser Zakaria, Jean-François Desrousseaux, Denis Cordonnier, Gilles Polveche
BACKGROUND: Achilles tendon rupture is a common injury but its optimal management is still controversial. When decided, surgical repair can be performed by open or percutaneous techniques. Till now, there is no agreement on the ideal type of surgical management. PURPOSE: To compare the outcomes of the percutaneous and open surgical treatment for acute Achilles tendon rupture and to assess the postoperative activity level recovery. METHODS: Between 2008 and 2013, 29 patients were surgically treated for acute Achilles tendon rupture in our institution...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28697088/intraarticular-distal-radius-fracture-open-reduction-internal-fixation
#16
Jason A Nydick, Benjamin D Streufert, Jeffrey D Stone
PURPOSE: Intraarticular distal radius fractures are often treated with open reduction and internal fixation (ORIF) through a volar approach. This common approach, however, is technically demanding to restore the articular surface of the radiocarpal joint while respecting soft tissue integrity. The purpose of this video is to demonstrate the surgical technique of volar plate fixation of an intraarticular distal radius fracture. METHODS: A 32-year-old patient who sustained multiple injuries including an intraarticular distal radius fracture was treated with ORIF by a volar approach...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28694858/local-application-of-vibration-in-motor-rehabilitation-scientific-and-practical-considerations
#17
Daniela Poenaru, Delia Cinteza, Irina Petrusca, Liliana Cioc, Dan Dumitrascu
Vibration stimulates specific receptors, cutaneous and musculo-tendinous. The aff erent impulses travel through spinal neurons to thalamus and cortical structures. The local muscular response to a vibration is a tonic vibratory refl ex. This refl ex depends on many factors: frequency, amplitude, and tendon and muscle length. Based upon this refl ex, vibration produced alteration of isometric and isotonic contraction, fl exibility, spasticity. Many studies investigated facilitator eff ects on movement in stroke patients and spinal cord injuries...
September 2016: Mædica
https://www.readbyqxmd.com/read/28693535/alfredson-versus-silbernagel-exercise-therapy-in-chronic-midportion-achilles-tendinopathy-study-protocol-for-a-randomized-controlled-trial
#18
Bas Habets, Robert E H van Cingel, Frank J G Backx, Bionka M A Huisstede
BACKGROUND: Midportion Achilles tendinopathy (AT) is a common overuse injury, usually requiring several months of rehabilitation. Exercise therapy of the ankle plantar flexors (i.e. tendon loading) is considered crucial during conservative rehabilitation. Alfredson's isolated eccentric and Silbernagel's combined concentric-eccentric exercise programs have both shown beneficial results, but it is unknown whether any of these programs is superior for use in clinical practice. Therefore, the primary objective of this study is to compare the effectiveness of both programs on clinical symptoms...
July 11, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28688825/three-dimensional-bio-printed-scaffold-sleeves-with-mesenchymal-stem-cells-for-enhancement-of-tendon-to-bone-healing-in-anterior-cruciate-ligament-reconstruction-using-soft-tissue-tendon-graft
#19
Sin Hyung Park, Yeong-Jin Choi, Sang Won Moon, Byung Hoon Lee, Jin-Hyung Shim, Dong-Woo Cho, Joon Ho Wang
PURPOSE: To investigate the efficacy of the insertion of 3-dimensional (3D) bio-printed scaffold sleeves seeded with mesenchymal stem cells (MSCs) to enhance osteointegration between the tendon and tunnel bone in anterior cruciate ligament (ACL) reconstruction in a rabbit model. METHODS: Scaffold sleeves were fabricated by 3D bio-printing. Before ACL reconstruction, MSCs were seeded into the scaffold sleeves. ACL reconstruction with hamstring tendon was performed on both legs of 15 adult rabbits (aged 12 weeks)...
July 5, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28673623/primary-flexor-tendon-repair-with-early-active-motion-experience-in-europe
#20
REVIEW
Thomas Giesen, Maurizio Calcagni, David Elliot
The protocol for primary flexor tendon repair in zones 1 and 2 of the hand is changing. This article discusses recent changes. Immediate repair within 48 hours is performed whenever possible. A 6-strand core suture is performed using the M modification of Tang's technique. The pulleys are divided to allow free excursion of the repaired tendon within the tendon sheath. To avoid repaired structures within the sheath being too bulky, the authors generally repair only half of the flexor digitorum superficialis...
August 2017: Hand Clinics
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