The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform
Steven L Fischer - One of the best experts on this subject based on the ideXlab platform.
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evaluating the ergonomic benefit of a Wrist Brace on Wrist posture muscle activity rotational stiffness and peak shovel ground impact force during a simulated tree planting task
Human Factors, 2017Co-Authors: Peter J Sheahan, Joshua G A Cashaback, Steven L FischerAbstract:Background Tree planters are at a high risk for Wrist injury due to awkward postures and high Wrist loads experienced during each planting cycle, specifically at shovel-ground impact. Wrist joint stiffness provides a measure that integrates postural and loading information. Objective The purpose of this study was to evaluate Wrist joint stiffness requirements at the instant of shovel-ground impact during tree planting and determine if a Wrist Brace could alter muscular contributions to Wrist joint stiffness. Method Planters simulated tree planting with and without wearing a Brace on their planting arm. Surface electromyography (sEMG) from six forearm muscles and Wrist kinematics were collected and used to calculate muscular contributions to joint rotational stiffness about the Wrist. Results Wrist joint stiffness increased with Brace use, an unanticipated and negative consequence of wearing a Brace. As a potential benefit, planters achieved a more neutrally oriented Wrist angle about the flexion/extension axis, although a less neutral Wrist angle about the ulnar/radial axis was observed. Muscle activity did not change between conditions. Conclusion The joint stiffness analysis, combining kinematic and sEMG information in a biologically relevant manner, revealed clear limitations with the interface between the Brace grip and shovel handle that jeopardized the prophylactic benefits of the current Brace design. This limitation was not as evident when considering kinematics and sEMG data independently. Application A neuromechanical model (joint rotational stiffness) enhanced our ability to evaluate the Brace design relative to kinematic and sEMG parameter-based metrics alone.
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evaluating the ergonomic benefit of a Wrist Brace on Wrist posture muscle activity rotational stiffness and peak shovel ground impact force during a simulated tree planting task
Human Factors, 2017Co-Authors: Peter J Sheahan, Joshua G A Cashaback, Steven L FischerAbstract:BackgroundTree planters are at a high risk for Wrist injury due to awkward postures and high Wrist loads experienced during each planting cycle, specifically at shovel-ground impact. Wrist joint st...
Peter J Sheahan - One of the best experts on this subject based on the ideXlab platform.
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evaluating the ergonomic benefit of a Wrist Brace on Wrist posture muscle activity rotational stiffness and peak shovel ground impact force during a simulated tree planting task
Human Factors, 2017Co-Authors: Peter J Sheahan, Joshua G A Cashaback, Steven L FischerAbstract:Background Tree planters are at a high risk for Wrist injury due to awkward postures and high Wrist loads experienced during each planting cycle, specifically at shovel-ground impact. Wrist joint stiffness provides a measure that integrates postural and loading information. Objective The purpose of this study was to evaluate Wrist joint stiffness requirements at the instant of shovel-ground impact during tree planting and determine if a Wrist Brace could alter muscular contributions to Wrist joint stiffness. Method Planters simulated tree planting with and without wearing a Brace on their planting arm. Surface electromyography (sEMG) from six forearm muscles and Wrist kinematics were collected and used to calculate muscular contributions to joint rotational stiffness about the Wrist. Results Wrist joint stiffness increased with Brace use, an unanticipated and negative consequence of wearing a Brace. As a potential benefit, planters achieved a more neutrally oriented Wrist angle about the flexion/extension axis, although a less neutral Wrist angle about the ulnar/radial axis was observed. Muscle activity did not change between conditions. Conclusion The joint stiffness analysis, combining kinematic and sEMG information in a biologically relevant manner, revealed clear limitations with the interface between the Brace grip and shovel handle that jeopardized the prophylactic benefits of the current Brace design. This limitation was not as evident when considering kinematics and sEMG data independently. Application A neuromechanical model (joint rotational stiffness) enhanced our ability to evaluate the Brace design relative to kinematic and sEMG parameter-based metrics alone.
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evaluating the ergonomic benefit of a Wrist Brace on Wrist posture muscle activity rotational stiffness and peak shovel ground impact force during a simulated tree planting task
Human Factors, 2017Co-Authors: Peter J Sheahan, Joshua G A Cashaback, Steven L FischerAbstract:BackgroundTree planters are at a high risk for Wrist injury due to awkward postures and high Wrist loads experienced during each planting cycle, specifically at shovel-ground impact. Wrist joint st...
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an ergonomic evaluation of a Wrist Brace for canadian tree planters
2016Co-Authors: Peter J SheahanAbstract:Thesis (Master, Kinesiology & Health Studies) -- Queen's University, 2016-09-15 20:35:55.301
Joshua G A Cashaback - One of the best experts on this subject based on the ideXlab platform.
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evaluating the ergonomic benefit of a Wrist Brace on Wrist posture muscle activity rotational stiffness and peak shovel ground impact force during a simulated tree planting task
Human Factors, 2017Co-Authors: Peter J Sheahan, Joshua G A Cashaback, Steven L FischerAbstract:Background Tree planters are at a high risk for Wrist injury due to awkward postures and high Wrist loads experienced during each planting cycle, specifically at shovel-ground impact. Wrist joint stiffness provides a measure that integrates postural and loading information. Objective The purpose of this study was to evaluate Wrist joint stiffness requirements at the instant of shovel-ground impact during tree planting and determine if a Wrist Brace could alter muscular contributions to Wrist joint stiffness. Method Planters simulated tree planting with and without wearing a Brace on their planting arm. Surface electromyography (sEMG) from six forearm muscles and Wrist kinematics were collected and used to calculate muscular contributions to joint rotational stiffness about the Wrist. Results Wrist joint stiffness increased with Brace use, an unanticipated and negative consequence of wearing a Brace. As a potential benefit, planters achieved a more neutrally oriented Wrist angle about the flexion/extension axis, although a less neutral Wrist angle about the ulnar/radial axis was observed. Muscle activity did not change between conditions. Conclusion The joint stiffness analysis, combining kinematic and sEMG information in a biologically relevant manner, revealed clear limitations with the interface between the Brace grip and shovel handle that jeopardized the prophylactic benefits of the current Brace design. This limitation was not as evident when considering kinematics and sEMG data independently. Application A neuromechanical model (joint rotational stiffness) enhanced our ability to evaluate the Brace design relative to kinematic and sEMG parameter-based metrics alone.
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evaluating the ergonomic benefit of a Wrist Brace on Wrist posture muscle activity rotational stiffness and peak shovel ground impact force during a simulated tree planting task
Human Factors, 2017Co-Authors: Peter J Sheahan, Joshua G A Cashaback, Steven L FischerAbstract:BackgroundTree planters are at a high risk for Wrist injury due to awkward postures and high Wrist loads experienced during each planting cycle, specifically at shovel-ground impact. Wrist joint st...
David W Polly - One of the best experts on this subject based on the ideXlab platform.
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the effect of a Wrist Brace on injury patterns in experimentally produced distal radial fractures in a cadaveric model
American Journal of Sports Medicine, 1997Co-Authors: Milan S Moore, Neven A Popovic, Joseph N Daniel, Steven R Boyea, David W PollyAbstract:We compared patterns of bony and ligamentous injury with distal radial fractures in Braced and unBraced Wrists using 20 paired fresh cadaveric upper extremities. A commercially available Wrist Brace was placed on one Wrist in each pair. Specimens were then placed in a fast-loading gravity-driven device and subjected to loads averaging 16 kg from an average height of 78 cm. Postfracture radiographs were obtained, the specimens were dissected, and fracture patterns and ligamentous integrity were assessed. The following fracture types were produced: distal radial fractures (eight unBraced, seven Braced) and intraarticular (seven unBraced, four Braced). Radiographically, seven unBraced Wrists demonstrated carpal bone fracture and one Braced Wrist demonstrated carpal fractures. Eight unBraced and three Braced Wrists sustained carpal intrinsic ligament injuries, four unBraced and one Braced Wrists demonstrated extrinsic ligament injuries. More capsular tears occurred in the unBraced group (N = 8) than in the Braced group (N = 1). This model demonstrated a difference in the patterns of injury in unBraced and Braced Wrists subjected to the same mechanical conditions, which suggests that use of a Wrist Brace may alter patterns of Wrist injury.
Jeongyi Kwon - One of the best experts on this subject based on the ideXlab platform.
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effect of personalized Wrist Brace for Wrist pain with 3d scanning and printing technique a preliminary randomized controlled open label study
Annals of Physical and Rehabilitation Medicine, 2018Co-Authors: Sung Jae Kim, Yong Ho Cha, Kwang Hyuck Lee, Jeongyi KwonAbstract:Introduction/Background Three-dimensional (3D) printer technology can produce the personalized Brace with low cost and less time. 3D printing data files are also advantageous for production of individualized products at no extra cost, even when different designs are used in consecutive production runs. In addition, because the 3D printer is controlled by a computer, it can make objects in various forms and is easy to use, as compared to other manufacturing techniques. The purpose of this study was to develop a personalized Wrist Brace using a 3D scanner and 3D printer for patients with Wrist pain caused by overuse syndrome, and to evaluate the improvement of pain relief, work performance, and daily life satisfaction after wearing the Brace. Material and method Twenty patients with Wrist pain were randomly assigned to control and experimental groups. The control group wore the cock-up splint and the experimental group wore 3D printed Wrist Brace for one week. Patient Rated Wrist Evaluation (PRWE), Jebsen Hand Function Test (JHFT), and Orthotics and Prosthetics User Survey (OPUS) were checked before and one week after the application. Results The PRWE showed significant pain relief in both groups. Two items of the 28 OPUS questions, ‘Put toothpaste on brush and brush teeth’ and ‘Dial a touch tone phone’, showed high satisfaction scores, with statistically significant difference in the experimental group (P = 0.036 and 0.004). Conclusion 3D printed Wrist Brace was superior to the cock-up splint in some items of the OPUS. Wrist pain was reduced in the group wearing the 3D printed Wrist Brace as well as the group wearing the cock-up splint, so 3D printed Wrist Brace could possibly play the same role as the cock-up splint.
