542 results match your criteria Upper Limb Prosthetics

Diagnostic accuracy of FDG PET for the identification of Vascular Graft Infection.

Ann Vasc Surg 2022 Jun 24. Epub 2022 Jun 24.

Houston Methodist Debakey Heart & Vascular Center, Houston, TX, USA. Electronic address:

Background: Fluorodeoxyglucose (FDG) positron emission tomography (FDG PET/CT) can be used to identify and localize infection in patients with vascular graft infections (VGI). We aimed to evaluate the diagnostic accuracy of 18F-FDG PET/CT by defining thresholds for standardized uptake value (SUV) and tissue-to-background ratio (TBR) that would accurately identify the presence of vascular graft infection.

Methods: Patients with suspected VGI were prospectively recruited and underwent 18F-FDG PET/CT scans. Read More

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Functional improvement by body-powered 3D-printed prosthesis in patients with finger amputation: Two case reports.

Medicine (Baltimore) 2022 Jun 24;101(25):e29182. Epub 2022 Jun 24.

Rehabilitation Center, Incheon Workers' Compensation Hospital, Incheon, Korea.

Rationale: The most common upper limb amputations are finger amputations, resulting in functional limitations that lead to problems with activities of daily living or job loss. For many years, prosthetic options for finger amputations have been limited to passive prostheses. In many countries including South Korea, body-powered finger prostheses have rarely been prescribed due to high cost, lack of experience of physicians and prosthetists, low interest and no coverage by insurance benefits. Read More

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Measuring Satisfaction with Upper Limb Prostheses: OPUS Revision that Includes Issues of Concern to Women: OPUS CSD for Upper Limb Prosthesis Users.

Arch Phys Med Rehabil 2022 Jun 12. Epub 2022 Jun 12.

University of Massachusetts Medical School, Worcester, Massachusetts.

Objective: To 1) modify the OPUS Client Satisfaction with Device (CSD) instrument to incorporate issues of concern to women and 2) evaluate measure's structural and concurrent validity and reliability in persons with upper limb amputation (ULA).

Design: Cross-sectional survey study with retest after two weeks. Exploratory factor analysis (EFA), confirmatory factor analysis (CFA), and Rasch analyses were utilized to select items and examine differential item functioning, range of coverage, and person and item reliability. Read More

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Design-development of an at-home modular brain-computer interface (BCI) platform in a case study of cervical spinal cord injury.

J Neuroeng Rehabil 2022 Jun 3;19(1):53. Epub 2022 Jun 3.

Department of Biomedical Engineering, University of Miami, 1251 Memorial Dr, MEA 204, Coral Gables, Miami, FL, 33146, USA.

Objective: The objective of this study was to develop a portable and modular brain-computer interface (BCI) software platform independent of input and output devices. We implemented this platform in a case study of a subject with cervical spinal cord injury (C5 ASIA A).

Background: BCIs can restore independence for individuals with paralysis by using brain signals to control prosthetics or trigger functional electrical stimulation. Read More

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The Prevalence of Depression and PTSD in Adults With Surgically Managed Traumatic Upper-Extremity Amputations.

Hand (N Y) 2022 Jun 3:15589447221093671. Epub 2022 Jun 3.

OrthoCarolina Hand Center, Charlotte, NC, USA.

Background: Upper-extremity limb loss has been associated with serious psychological sequelae. Despite advancements in surgical procedures and prostheses for upper limb amputees, it is critical to recognize the psychosocial component of these patients' care. Although the role of psychological factors in outcomes is increasingly acknowledged, little is known about the prevalence of depression and post-traumatic stress disorder (PTSD) in the civilian population after traumatic upper-extremity amputation. Read More

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Improvements in hand functions and changes in proximal muscle activities in myoelectric prosthetic hand users at home: a case series.

Prosthet Orthot Int 2022 May 4. Epub 2022 May 4.

Center for Bionics, Biomedical Research Institute, Korea Institute of Science and Technology, Korea I (UST), Seoul, South Korea.

Background: Adaptation in proximal muscles for daily motor tasks after sustained use of a prosthetic hand has not been fully understood.

Objectives: This study aimed to investigate changes in hand functions and activities of proximal muscles after multiple weeks of using a myoelectric prosthetic hand at home.

Study Design: Repeated measures. Read More

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Towards User-Centred Prosthetics Research Beyond the Laboratory.

Front Neurosci 2022 14;16:863833. Epub 2022 Apr 14.

Edinburgh Neuroprosthetics Laboratory, The University of Edinburgh, Edinburgh, United Kingdom.

The purpose of this study was to explore a range of perspectives on how academic research and clinical assessment of upper-limb prosthetics could happen in environments outside of laboratories and clinics, such as within peoples' homes. Two co-creation workshops were held, which included people who use upper limb prosthetic devices (hereafter called users), clinicians, academics, a policy stakeholder, and a representative from the upper-limb prosthetics industry (hereafter called professionals). The discussions during the workshops indicate that research and clinical assessment conducted remotely from a laboratory or clinic could inform future solutions that address user needs. Read More

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The Patterns of Acquired Upper and Lower Extremity Amputation at a Tertiary Centre in Saudi Arabia.

Cureus 2022 Apr 11;14(4):e24026. Epub 2022 Apr 11.

Department of Physical Medicine and Rehabilitation, Rehabilitation Hospital, King Fahad Medical City, Riyadh, SAU.

Introduction: Upper and lower extremity amputations are associated with variable degrees of physical disability. In Saudi Arabia, disability still represents a major challenge for healthcare systems. There are insufficient data to describe the incidence and prevalence of impairment and disability. Read More

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Hierarchical Human-Inspired Control Strategies for Prosthetic Hands.

Sensors (Basel) 2022 Mar 25;22(7). Epub 2022 Mar 25.

Unit of Advanced Robotics and Human-Centred Technologies, Università Campus Bio-Medico di Roma, 00128 Rome, Italy.

The abilities of the human hand have always fascinated people, and many studies have been devoted to describing and understanding a mechanism so perfect and important for human activities. Hand loss can significantly affect the level of autonomy and the capability of performing the activities of daily life. Although the technological improvements have led to the development of mechanically advanced commercial prostheses, the control strategies are rather simple (proportional or on/off control). Read More

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Design of a modular and compliant wrist module for upper limb prosthetics.

Anat Rec (Hoboken) 2022 Apr 1. Epub 2022 Apr 1.

Research Unit of Advanced Robotics and Human-Centred Technologies (CREO Lab), Università Campus Bio-Medico di Roma, Rome, Italy.

In the last decades, there have been great efforts in the development of advanced polyarticulated prosthetic hands; in contrast, prosthetic wrists have drawn less interest. Nevertheless, increasing the dexterity of the wrist improves handling skills because the wrist allows the prepositioning of the hand before carrying out a task, avoiding the onset of unwanted trunk or shoulders compensatory movements and potential onset or exacerbation of articular injuries. This study presents a novel 2-degree-of-freedom prosthetic wrist module with active pronation/supination and passive elastic flexion/extension. Read More

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Alpha-band activity in parietofrontal cortex predicts future availability of vibrotactile feedback in prosthesis use.

Exp Brain Res 2022 May 7;240(5):1387-1398. Epub 2022 Mar 7.

Georgia Institute of Technology, 575 14 TH Street Northwest, Atlanta, GA, 30318, USA.

Prosthesis disuse and abandonment is an ongoing issue in upper-limb amputation. In addition to lost structural and motor function, amputation also results in decreased task-specific sensory information. One proposed remedy is augmenting somatosensory information using vibrotactile feedback to provide tactile feedback of grasping objects. Read More

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Targeted Muscle Reinnervation (TMR) and Other Considerations in Upper Extremity Amputation.

Bull Hosp Jt Dis (2013) 2022 Mar;80(1):25-30

Targeted muscle reinnervation (TMR) is a procedure in which amputated nerves are transferred to motor branches of functionally expendable muscles, which can then serve as "biological amplifiers" of neurologic information. It is a technique that was developed with the primary intent of improving myoelectric prosthesis control in high level upper extremity amputees. Over time, TMR has been shown to confer significant benefits in terms of both residual and phantom limb pain and as such has become a powerful tool in neuroma management in amputees and non-amputees. Read More

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User experiences of digital prostheses in daily functioning in people with an amputation of thumb or finger.

J Hand Ther 2022 Apr-Jun;35(2):289-298. Epub 2022 Feb 25.

The University of Derby, Derby, United Kingdom.

STUDY DESIGN": Qualitative research design using interpretative phenomenological analysis (IPA) to interpret users' experiences with digital prostheses.

Background: Digital prostheses are rarely used, and little is known about the experiences of traumatic finger amputees with digital prostheses. When advising patients regarding digital prostheses, it is crucial for professionals to understand users experiences of wearing a digital prosthesis and the meaning attached to wearing a digital prosthesis. Read More

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February 2022

A Fabricated Force Glove That Measures Hand Forces during Activities of Daily Living.

Sensors (Basel) 2022 Feb 9;22(4). Epub 2022 Feb 9.

School of Electrical Engineering and Computer Science, Louisiana State University, Baton Rouge, LA 70803, USA.

Understanding hand and wrist forces during activities of daily living (ADLs) are pertinent when modeling prosthetics/orthotics, preventing workplace-related injuries, and understanding movement patterns that make athletes, dancers, and musicians elite. The small size of the wrist, fingers, and numerous joints creates obstacles in accurately measuring these forces. In this study, 14 FlexiForce sensors were sewn into a glove in an attempt to capture forces applied by the fingers. Read More

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February 2022

Two Decades of Hand Transplantation: A Systematic Review of Outcomes.

Ann Plast Surg 2022 03;88(3):335-344

Department of Plastic Surgery, Cleveland Clinic, Cleveland, OH.

Abstract: Hand transplantation for upper extremity amputation provides a unique treatment that restores form and function, which may not be achieved by traditional reconstruction and prosthetics. However, despite enhancing quality of life, hand transplantation remains controversial, because of immunological complications, transplant rejection, and medication effects. This systematic literature review sought to collect information on current experiences and outcomes of hand transplants to determine the efficacy and utility of hand transplants. Read More

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Functional performance and patient satisfaction comparison between a 3D printed and a standard transradial prosthesis: a case report.

Biomed Eng Online 2022 Jan 29;21(1). Epub 2022 Jan 29.

Department of Biomechanics, University of Nebraska at Omaha, Biomechanics Research Building, 3D Printed Prosthetic,Orthotic & Assistive Devices, Omaha, USA.

Background: The delay between amputation and prosthesis fitting contributes to the high rate of prosthetic abandonment despite advances in technology. Three-dimensional (3D) printing has allowed for the rapid fabrication of prostheses. Allowing individuals with amputations to interact with a prosthesis shortly after their procedure may reduce rejection chances. Read More

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January 2022

High-Density Electromyography Provides Improved Understanding of Muscle Function for Those With Amputation.

Front Med Technol 2021 9;3:690285. Epub 2021 Aug 9.

Faculty of Health, Dalhousie University, Halifax, NS, Canada.

Transtibial amputation can significantly impact an individual's quality of life including the completion of activities of daily living. Those with lower limb amputations can harness the electrical activity from their amputated limb muscles for myoelectric control of a powered prosthesis. While these devices use residual muscles from transtibial-amputated limb as an input to the controller, there is little research characterizing the changes in surface electromyography (sEMG) signal generated by the upper leg muscles. Read More

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Adolescents with congenital limb reduction deficiency: Perceptions of treatment during childhood and its meaning for their current and future situation.

Child Care Health Dev 2022 07 27;48(4):613-622. Epub 2022 Jan 27.

School of Health Sciences, Örebro University, Örebro, Sweden.

Background: Children with congenital limb reduction deficiency live with the decisions made by their parents and healthcare professionals about treatments to be carried out during the first years of life. To understand better the meaning of treatment during childhood, it is necessary to listen to adolescents who have had this experience. The aim of this study was to investigate the perceptions of adolescents with congenital limb reduction deficiency concerning the treatment they received during childhood and what it meant to them currently and in the future. Read More

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Greater and More Natural Use of the Upper Limbs During Everyday Life by Former Amputees Versus Prosthesis Users.

Neurorehabil Neural Repair 2022 03 7;36(3):227-238. Epub 2022 Jan 7.

Dept. of Psychological Sciences, 14716University of Missouri, Columbia, MO, USA.

Hand loss profoundly impacts daily functioning. Reversal of amputation through hand replantation or transplantation offers an alternative to prosthetics for some. Whether recipients exhibit more extensive and natural limb use during everyday life than prosthesis users is, however, unknown. Read More

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Prosthetic management of unilateral transradial amputation and limb deficiency: Consensus clinical standards of care.

J Rehabil Assist Technol Eng 2021 Jan-Dec;8:20556683211065262. Epub 2021 Dec 17.

Upper Limb Prosthetic Program, Hanger Inc, Austin, TX, USA.

Introduction: Upper limb research is currently lacking detailed clinical guidance on the provision of unilateral transradial prostheses. Clinical practice guidelines are meant to serve as assistance for the decision-making process, and Delphi surveys have been used with increasing frequency within orthotics and prosthetics to create these guidelines for clinical practice.

Methods: A three round Delphi survey was used to gain consensus on clinical statements regarding unilateral transradial prostheses. Read More

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December 2021

Structural validity and reliability of the patient experience measure: A new approach to assessing psychosocial experience of upper limb prosthesis users.

PLoS One 2021 28;16(12):e0261865. Epub 2021 Dec 28.

Boston University, Boston, Massachusetts, United States of America.

Recent advances in upper limb prosthetics include sensory restoration techniques and osseointegration technology that introduce additional risks, higher costs, and longer periods of rehabilitation. To inform regulatory and clinical decision making, validated patient reported outcome measures are required to understand the relative benefits of these interventions. The Patient Experience Measure (PEM) was developed to quantify psychosocial outcomes for research studies on sensory-enabled upper limb prostheses. Read More

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January 2022

Non-Invasive Analysis of Motor Unit Activation During Simultaneous and Continuous Wrist Movements.

IEEE J Biomed Health Inform 2022 05 5;26(5):2106-2115. Epub 2022 May 5.

Surface electromyography (EMG) signals have shown promising applications in human-machine interfacing (HMI) systems such as orthotics, prosthetics, and exoskeletons. Nevertheless, existing myoelectric control methods, generally based on time-domain or frequency-domain features, could not directly interpret neural commands. EMG decomposition techniques have become a prevailing solution to decode the motor neuron discharges from the spinal cord, whereas only single degree-of-freedom (DoF) movements are primarily involved in the current neural-based interfaces, resulting in limited intuitiveness and functionality. Read More

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A Network-Enabled Myoelectric Platform for Prototyping Research Outside of the Lab.

Annu Int Conf IEEE Eng Med Biol Soc 2021 11;2021:7422-7425

We present a network-enabled myoelectric platform for performing research outside of the laboratory environment. A low-cost, flexible, modular design based on common Internet of Things connectivity technology allows home-based research to be piloted. An outline of the platform is presented followed by technical results obtained from ten days of home-based tests with three participants. Read More

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November 2021

Design and Implementation of an Instrumented Data Glove that measures Kinematics and Dynamics of Human Hand.

Annu Int Conf IEEE Eng Med Biol Soc 2021 11;2021:7229-7232

Human hands are versatile biomechanical architectures that can perform simple movements such as grasping to complicated movements such as playing a musical instrument. Such extremely dependable and useful parts of the human body can be debilitated due to movement disorders such as Parkinson's disease, stroke, spinal cord injury, multiple sclerosis and cerebral palsy. In such cases, precisely measuring the residual or abnormal hand function becomes a critical assessment to help clinicians and physical therapists in diagnosis, treatment and in prescribing appropriate prosthetics or rehabilitation therapies. Read More

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November 2021

Inverse Kinematics of a Parallel Mechanism with an Offset Structural Design for Prosthetic Wrist Motions.

Annu Int Conf IEEE Eng Med Biol Soc 2021 11;2021:4883-4885

Recent developments in upper limb wrist prosthetics allow for amputees to closely mimic the motions of a healthy human wrist. Although many active wrist prosthetics can flex and extend, relatively little work is done with their ability to pronate and supinate without the use of additional motors between the region where the forearm meets the hand. This paper reports a 3SPS-S-3RRR mechanism that provides quasi-spherical motions, mimicking a wrist's ability to flex and extend. Read More

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November 2021

Elements Influencing sEMG-Based Gesture Decoding: Muscle Fatigue, Forearm Angle and Acquisition Time.

Sensors (Basel) 2021 Nov 19;21(22). Epub 2021 Nov 19.

School of Mechanical Engineering and Automation, Fuzhou University, No.2 Xueyuan Road, Fuzhou 350116, China.

The surface Electromyography (sEMG) signal contains information about movement intention generated by the human brain, and it is the most intuitive and common solution to control robots, orthotics, prosthetics and rehabilitation equipment. In recent years, gesture decoding based on sEMG signals has received a lot of research attention. In this paper, the effects of muscle fatigue, forearm angle and acquisition time on the accuracy of gesture decoding were researched. Read More

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November 2021

Serious Games Are Not Serious Enough for Myoelectric Prosthetics.

JMIR Serious Games 2021 Nov 8;9(4):e28079. Epub 2021 Nov 8.

Edinburgh Neuroprosthetics Laboratory, School of Informatics, University of Edinburgh, Edinburgh, United Kingdom.

Serious games show a lot of potential for use in movement rehabilitation (eg, after a stroke, injury to the spinal cord, or limb loss). However, the nature of this research leads to diversity both in the background of the researchers and in the approaches of their investigation. Our close examination and categorization of virtual training software for upper limb prosthetic rehabilitation found that researchers typically followed one of two broad approaches: (1) focusing on the game design aspects to increase engagement and muscle training and (2) concentrating on an accurate representation of prosthetic training tasks, to induce task-specific skill transfer. Read More

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November 2021

Correlates of Balance and Aerobic Indices in Lower-Limb Prostheses Users on Arm Crank Exercise.

Sensors (Basel) 2021 Oct 19;21(20). Epub 2021 Oct 19.

Department of Counseling, Health & Kinesiology, Texas A&M University-San Antonio, San Antonio, TX 78244, USA.

Background: The HUMAC Balance System (HBS) offers valid measurement of balance, and the arm crank exercise test (ACE) is a valid measure of physiological capacity. Neither have been used to evaluate associations between balance and physiological capacity in lower-limb amputees.

Methods: Thirty-five participants with lower-limb amputations were recruited. Read More

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October 2021

Evaluating the Ability of Congenital Upper Extremity Amputees to Control a Multi-Degree of Freedom Myoelectric Prosthesis.

J Hand Surg Am 2021 Oct 14. Epub 2021 Oct 14.

OrthoCarolina Hand Center, Charlotte, NC.

Purpose: To determine whether children and adults with unilateral congenital upper limb amputation can control myoelectric prostheses with multiple degrees of freedom (DOF) using pattern recognition (PR) technology.

Methods: Seven participants (age 9-62 years) with unilateral congenital transradial amputation were tested on both their residual and sound side limbs to determine proficiency in controlling a virtual prosthesis using electromyographic signals captured by an array of surface electrodes that were processed using PR technology. Proficiency was measured through a virtual environment game called the target achievement control test, in which the testing protocol asked participants to match increasingly complex prosthesis postures with 1, 2, and 3 DOF. Read More

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October 2021

A Hierarchical View Pooling Network for Multichannel Surface Electromyography-Based Gesture Recognition.

Comput Intell Neurosci 2021 26;2021:6591035. Epub 2021 Aug 26.

School of Design Arts and Media, Nanjing University of Science and Technology, Nanjing, Jiangsu, China.

Hand gesture recognition based on surface electromyography (sEMG) plays an important role in the field of biomedical and rehabilitation engineering. Recently, there is a remarkable progress in gesture recognition using high-density surface electromyography (HD-sEMG) recorded by sensor arrays. On the other hand, robust gesture recognition using multichannel sEMG recorded by sparsely placed sensors remains a major challenge. Read More

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September 2021