2,931 results match your criteria: "Upper Limb Prosthetics"

The International Classification of Functioning, Disability, and Health (ICF) provides a universal framework for assessing the functioning of any person. To facilitate the application of the ICF in practice, ICF core sets are being developed. This study is part of a project intended to develop an ICF core set for upper-limb amputation (ULA) and aims to identify relevant concepts included in the outcome measurements used in studies of ULA.

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Introduction: Many stroke patients suffer from dysfunction in their upper limbs, which can lead to difficulties in performing activities of daily living (ADL) as well as social and work interactions. This is particularly true for patients whose dominant side has been affected. The aim of the current study was to explore how effective visual biofeedback could improve fine motor function in the hand and ADL for people suffering from a stroke.

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Unlabelled: Limb amputation results in such devastating consequences as loss of motor and sensory functions and phantom limb pain (PLP). Neurostimulation-based approaches have been developed to treat this condition, which provide artificial somatosensory feedback such as peripheral nerve stimulation (PNS), spinal cord stimulation (SCS), and transcutaneous electrical nerve stimulation (TENS). Yet, the effectiveness of different neurostimulation methods has been rarely tested in the same participants.

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Background: Chronic limb-threatening ischemia is a condition of the lower extremities that requires therapeutic intervention. It is characterized by ischemia, tissue loss, neuropathy, infection, and risk of amputation.

Case: An 82-year-old woman with a history of bilateral total knee arthroplasty and rheumatoid arthritis underwent a left ankle arthroplasty.

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Despite significant technological progress in prosthetic hands, a device with functionality akin to a biological extremity is far from realization. To better support the development of next-generation technologies, we investigated the grasping capabilities of clinically prescribable and commercially available (CPCA) prosthetic hands against those that are 3D-printed, which offer cost-effective and customizable solutions. Our investigation utilized the Anthropomorphic Hand Assessment Protocol (AHAP) as a benchtop evaluation of the multi-grasp performance of 3D-printed devices against CPCA prosthetic hands.

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Investigation of the relationship between lower limb orthosis user satisfaction and quality of life and functionality in stroke patients: a cross-sectional study.

Top Stroke Rehabil

November 2024

Department of Physiotherapy and Rehabilitation, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Türkiye.

Article Synopsis
  • The study explores how satisfaction with lower limb orthoses impacts the quality of life (QOL) and functionality in stroke patients.
  • It involved 44 participants, where satisfaction was measured using the OPUS survey, while QOL and functionality were assessed through specific scales and tests.
  • Results indicated that higher satisfaction with orthoses was linked to better self-care and some functional abilities, but issues with comfort and usability were noted, suggesting that improving orthoses design could enhance patient satisfaction and usage.
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Article Synopsis
  • The study used fMRI to explore how our brains control bimanual movements, focusing on the importance of practicing both chord formation and sequence control.
  • Thirty-five right-handed volunteers performed tasks to assess their ability to coordinate movements, with results showing that both types of practice led to improved reaction times, indicating learning.
  • Key brain areas involved in this process were identified as the left primary motor area (M1), anterior cingulate cortex, and cerebellar vermis, highlighting their roles in learning to coordinate complex bimanual movements.
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Spatial and spectral changes in cortical surface potentials during pinching versusthumb and index finger flexion.

Neurosci Lett

January 2025

Department of Neurologic Surgery, Mayo Clinic, Rochester, MN, USA; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.

Electrocorticographic (ECoG) signals provide high-fidelity representations of sensorimotor cortex activation during contralateral hand movements. Understanding the relationship between independent and coordinated finger movements along with their corresponding ECoG signals is crucial for precise brain mapping and neural prosthetic development. We analyzed subdural ECoG signals from three adult epilepsy patients with subdural electrode arrays implanted for seizure foci identification.

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Extensive humerus and scapula hydatidosis: A unique case report and comprehensive review of management strategies.

Int J Surg Case Rep

December 2024

Joint Reconstruction Research Center, Department of Orthopedics, Tehran University of Medical Sciences, Iran. Electronic address: https://twitter.com/Saeed_Khabiri.

Introduction And Importance: Bone hydatidosis is a rare manifestation of Echinococcus infection, presenting significant diagnostic and therapeutic challenges. This case report describes the successful management of an extensive hydatid disease involving the entire humerus and scapula.

Case Presentation: A 44-year-old male presented with progressive right arm pain and swelling.

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Hand motion intention recognition has been considered as one of the crucial research fields for prosthetic control and rehabilitation medicine. In recent years, surface electromyogram (sEMG) signals that directly reflect human motion information are ideal input sources for prosthetic control and rehabilitation. However, how to effectively extract components from sEMG signals containing abundant limb movement information to improve the accuracy of hand recognition still is a difficult problem.

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Article Synopsis
  • Research in prosthetics needs to include standard clinical prosthetic sockets and typically requires the involvement of prosthetists, but there's a global shortage of these professionals.
  • Many studies use anatomically intact individuals instead, which may not accurately reflect clinical realities.
  • This paper introduces a method to clone clinical prosthetic sockets using silicone and plaster molds without needing a prosthetist, proving the technique's feasibility and accuracy with minimal mean distance variation of 0.16 mm.
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Advancements in neural network approaches have enhanced the effectiveness of surface Electromyography (sEMG)-based hand gesture recognition when measuring muscle activity. However, current deep learning architectures struggle to achieve good generalization and robustness, often demanding significant computational resources. The goal of this paper was to develop a robust model that can quickly adapt to new users using Transfer Learning.

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Background: Neck pain is a significant health concern for unilateral upper limb amputees (UULAs), affecting their functional status and quality of life.

Objectives: To address the neck pain burden that is adding to UULA's pre-existing disability and help Physical therapists to judiciously design and execute effective therapeutic strategies.

Methods: We searched databases for articles till October 23, 2023, and included primary studies reporting neck pain prevalence among UULAs.

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Article Synopsis
  • The study compared musculoskeletal pain and upper extremity disability between "smartphone addicts" (38.4% of participants) and "non-smartphone addicts" among 352 university students aged 18-25 who used smartphones for at least 1 hour daily.
  • Results indicated significant differences in smartphone use, pain levels, and disability scores between the two groups, particularly with the Smartphone Addiction Scale (SAS-SV) dictating these differences.
  • The findings suggested that smartphone addicts experience more pain and disability in their arms, shoulders, and hands, with gender being a factor influencing pain locations for both groups.
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Amputations Resulting From Systemic Sclerosis: The Role of Multidisciplinary Cooperation.

Cureus

October 2024

Physical Medicine and Rehabilitation, Unidade Local de Saúde de Santo António, Porto, PRT.

Systemic sclerosis (SSc) is a complex connective tissue disease involving microvasculopathy, immune dysregulation, and extensive organ fibrosis. It affects various systems including the skin, lungs, heart, and gastrointestinal tract. Management is challenging due to the disease's heterogeneity and often requires more than just pharmacological treatment.

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An environmental scan of limb loss rehabilitation centers across Canada.

Prosthet Orthot Int

November 2024

St. John's Rehab Research Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.

Background: The clinical landscape of limb loss rehabilitation across Canada is poorly delineated, lacks standard rehabilitation guidelines, and is without a shared clinical database.

Objective: To address these gaps, the objective of the present study was to undertake an environmental scan of the rehabilitation centers across Canada that provide inpatient and/or outpatient services to the limb loss community.

Study Design: An environmental scan was conducted to describe the rehabilitation service structure, program services, and outcome measures of sites across Canada.

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This paper aims to introduce HDE-Array (High-Density Electrode Array), a novel dry electrode array for acquiring High-Density surface electromyography (HD-sEMG) for hand position estimation through RPC-Net (Recursive Prosthetic Control Network), a neural network defined in a previous study. We aim to demonstrate the hypothesis that the position estimates returned by RPC-Net using HD-sEMG signals acquired with HDE-Array are as accurate as those obtained from signals acquired with gel electrodes. We compared the results, in terms of precision of hand position estimation by RPC-Net, using signals acquired by traditional gel electrodes and by HDE-Array.

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Purpose: Children with congenital upper limb difference (CULD) in India have limited access to treatment with conventional prostheses. 3D printed prosthetic devices (3DPP) can function as transitional prostheses for growing children with congenital transverse deficiency. They are low-cost and the designs are easily customized.

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Human fingertip tactile perception relies on the activation of densely distributed tactile receptors to identify contact patterns in the brain. Despite significant efforts to integrate tactile sensors with machine learning algorithms for recognizing physical patterns on object surfaces, developing a tactile sensing system that emulates human fingertip capabilities for identifying contact patterns with a high spatiotemporal resolution remains a formidable challenge. In this study, we present the development of an artificial tactile finger for accurate contact pattern identification, achieved through the integration of a high spatiotemporal piezoresistive sensor array (PRSA) and a convolutional neural network (CNN) model.

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Free fillet flap: Outcomes in emergency microsurgical reconstruction of upper and lower limb.

J Plast Reconstr Aesthet Surg

December 2024

Division of Plastic and Reconstructive Surgery, Hospital Universitario 'La Paz' FIBHULP-IdiPaz, Paseo de la Castellana, 261, 28046 Madrid, Spain. Electronic address:

Introduction: Despite its infrequency, 'spare-part surgery' represents a reconstructive strategy that uses segments of amputated limbs as donor tissue to preserve function in other injured anatomical regions. The purpose of this study was to review our 14-year experience in emergency microsurgical reconstruction of traumatised limbs using free fillet flaps obtained from non-salvageable amputated parts.

Materials And Methods: A retrospective observational study was conducted on patients who underwent urgent free fillet flap transfer for upper or lower limb reconstruction between 2007 and 2021.

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Article Synopsis
  • - The study aims to clarify factors associated with revision surgery after lower limb amputations due to trauma, addressing the gap in information available to both patients and surgeons regarding patients' outcomes and potential complications.
  • - Conducted as a single-center, retrospective study over a decade, it analyzed 86 patients who had undergone lower limb amputations, focusing on their survivorship and functional outcomes, with a high rate of follow-up and prosthesis fitting.
  • - Key questions explored included the rate of initial amputation survivorship without revisions, patient and injury-related factors that might lead to revision, and how these factors affect the functional outcomes of patients post-surgery.
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Background: Impairment of trunk control is a common problem after stroke, and trunk impairment may affect many functions such as breathing, speech, limb movements and transfers.

Objective: The present study was aimed to investigate the effect of trunk control on sitting balance and upper extremity functions in individuals with subacute stroke.

Methods: A total of 30 patients with subacute stroke (14 female, 16 male) were included in this study.

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Article Synopsis
  • Infective endocarditis (IE) is a serious infection that causes inflammation of the heart's inner lining, often increasing in patients receiving hemodialysis (HD).
  • A case study describes a 46-year-old obese male with a history of diabetes and renal disease who faced severe symptoms after missing dialysis sessions, including altered mental status and indications of septic shock.
  • The case emphasizes the need for urgent medical intervention and collaboration among healthcare teams to stabilize the patient and investigate potential infections linked to his condition.
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Researchers have attempted to control robotic hands and prostheses through biosignals but could not match the human hand. Surface electromyography records electrical muscle activity using non-invasive electrodes and has been the primary method in most studies. While surface electromyography-based hand motion decoding shows promise, it has not yet met the requirements for reliable use.

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