817 results match your criteria Lower 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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Test-retest reliability of the Arabic translation of the Lower Extremity Functional Status of the Orthotics and Prosthetics Users' Survey.

Prosthet Orthot Int 2022 Jun 14;46(3):290-293. Epub 2021 Dec 14.

Physical Therapy Department, King Fahed Medical City, Saudi Arabia.

Background: The number of amputations secondary to diverse factors in Arabic countries is expected to rise in the coming years. Therefore, there is a need for high-quality service that can be monitored by the use of standardized patient-reported outcome measures of amputee patients' functional status. This study aimed to translate the Lower Extremity Functional status Orthotics and Prosthetics Users' Survey (OPUS-LEFS) to Arabic and test its reliability in a sample of Arabic-speaking people with amputation. Read More

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Impact of the COVID-19 restrictions on physical activity and quality of life in adults with lower limb amputation.

Prosthet Orthot Int 2022 Jun 14;46(3):213-219. Epub 2021 Dec 14.

Department of Occupational therapy, Prosthetics and Orthotics, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway.

Background: This study investigated the impact of COVID-19 restrictions on ambulatory activity and health-related quality of life (HR-QoL) in people with a lower limb amputation (LLA) in Norway. We hypothesized that the restrictions would negatively affect HR-QoL and decrease prosthetic wear time and ambulatory activity in participants with already limited mobility.

Methods: Twenty individuals with LLA (age and time since amputation 56. Read More

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Incidence of lower-limb amputations in Sweden from 2008-2017.

Eur J Vasc Endovasc Surg 2022 May 26. Epub 2022 May 26.

Clinical Epidemiology and Biostatistics, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.

Objectives: This study examines the recent national and regional incidence of lower limb amputations (LLAs) in Sweden and their annual changes.

Design: Observational study using Swedish national register data.

Methods: We identified all initial amputations in Sweden from 2008 to 2017 in individuals 18 years or older using the national inpatient register. Read More

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Improving shared decision-making for prosthetic care: a qualitative needs assessment of prosthetists and new lower-limb prosthesis users.

Prosthet Orthot Int 2022 May 25. Epub 2022 May 25.

Department of Physical Medicine and Rehabilitation, Physical Therapy Program, University of Colorado, Aurora, CO, USA.

Background: Prosthesis design is complex and multiple appropriate options exist for any individual with lower-limb amputation. However, there is insufficient evidence for guiding decision-making. Shared decision-making (SDM) offers an opportunity to incorporate patient-specific values and preferences where evidence is lacking for prosthesis design decisions. Read More

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Recreational runners with Achilles tendinopathy have clinically detectable impairments: A case-control study.

Phys Ther Sport 2022 May 6;55:241-247. Epub 2022 May 6.

Department of Physiotherapy, Faculty of Medicine, Nursing and Health Science, Monash University, Australia. Electronic address:

Objectives: To confirm what impairments are present in runners with Achilles tendinopathy (AT) and explore the variance of AT severity in an adequately powered study.

Design: Case-control study.

Setting: Two private physiotherapy clinics in Australia and Spain. Read More

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Unilateral below-knee prosthesis users walking on uneven terrain: The effect of adding a toe joint to a passive prosthesis.

J Biomech 2022 Jun 5;138:111115. Epub 2022 May 5.

Department of Mechanical Engineering, Vanderbilt University, Nashville, TN 37212, USA; Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA; Department of Physical Medicine and Rehabilitation, Vanderbilt University, Nashville, TN 37212, USA.

Lower limb prosthesis users cite uneven terrain as a challenging surface to walk on. We sought to determine whether adding a Flexible toe joint to a prosthetic foot would be preferred by unilateral below-knee prosthesis users relative to a Locked (non-articulating) toe joint for walking on uneven terrain. We also quantified lower limb joint kinetics for the Locked and Flexible toe joint configurations. Read More

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Optical coherence tomography for the investigation of skin adaptation in lower limb prosthesis users.

J Prosthet Orthot 2021 Oct;33(4):255-265

Department of Bioengineering, University of Washington, Seattle.

Introduction: Mechanically induced skin breakdown is a significant problem for many lower-limb prosthesis users. It is known that skin can adapt to the mechanical stresses of prosthesis use thereby reducing the risk of breakdown, yet little is understood about the biology behind skin adaptation. This is a proof-of-concept study for the use of novel, noninvasive optical coherence tomography (OCT) imaging techniques to investigate skin adaptation. Read More

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October 2021

Activity, socket fit, comfort and community participation in lower limb prosthesis users: a Cambodian cohort study.

J Neuroeng Rehabil 2022 05 2;19(1):42. Epub 2022 May 2.

University of Southampton, Southampton, UK.

Background: After amputation, many people become less active, feel lonely and lose independence. Understanding the factors associated with low physical activity levels and participation could contribute to defining key interventions which can support prosthesis users so they can live a more active and socially included lifestyle. This longitudinal observational study aims to assess relationships between physical activity, community participation, prosthetic fit, comfort and user satisfaction using actimetry, 3D scans and questionnaires in a Cambodian cohort of established lower limb prosthesis users. Read More

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Full body musculoskeletal model for simulations of gait in persons with transtibial amputation.

Comput Methods Biomech Biomed Engin 2022 May 2:1-12. Epub 2022 May 2.

Department of Mechanical Engineering, University of Washington, Seattle, WA, USA.

This paper describes the development, properties, and evaluation of a musculoskeletal model that reflects the anatomical and prosthetic properties of a transtibial amputee using OpenSim. Average passive prosthesis properties were used to develop CAD models of a socket, pylon, and foot to replace the lower leg. Additional degrees of freedom (DOF) were included in each joint of the prosthesis for potential use in a range of research areas, such as socket torque and socket pistoning. Read More

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Proximal Femoral Focal Deficiency/Congenital Femoral Deficiency: Evaluation and Management.

J Am Acad Orthop Surg 2022 07 28;30(13):e899-e910. Epub 2022 Apr 28.

From the Shriners Hospital for Children-Philadelphia, Philadelphia, PA (Nossov and Franklin), Temple University College of Public Health, Philadelphia, PA (Hollin), and Colorado Joint Replacement, Porter Adventist Hospital, Denver, CO (Phillips).

Proximal focal femoral deficiency is a congenital transverse deficiency in which the femur is globally smaller with a typical proximal deformity at the hip that may include distal involvement of knees, leg, and feet. Congenital femoral deficiency (CFD) describes a broader spectrum of longitudinal deficiency inclusive of proximal focal femoral deficiency. CFD may also include lateral distal femoral hypoplasia, knee cruciate ligament deficiency, rotational instability, patellar dislocation, fibular hemimelia, ray absence, and contralateral limb involvement. 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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Within-subject effects of standardized prosthetic socket modifications on physical function and patient-reported outcomes.

Trials 2022 Apr 12;23(1):299. Epub 2022 Apr 12.

Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, USA.

Background: Among the challenges of living with lower limb loss is the increased risk of long-term health problems that can be either attributed directly to the amputation surgery and/or prosthetic rehabilitation or indirectly to a disability-induced sedentary lifestyle. These problems are exacerbated by poorly fit prosthetic sockets. There is a knowledge gap regarding how the socket design affects in-socket mechanics and how in-socket mechanics affect patient-reported comfort and function. Read More

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Use of Standardized Outcome Measures for People With Lower Limb Amputation: A Survey of Prosthetic Practitioners in the United States.

Arch Phys Med Rehabil 2022 Apr 6. Epub 2022 Apr 6.

Department of Rehabilitation Medicine, University of Washington, Seattle, Washington. Electronic address:

Objective: To assess the clinical resources available for the assessment of health outcomes in people with lower limb amputation and to understand barriers and facilitators associated with use of standardized outcome measures in clinical practice.

Design: Cross-sectional survey.

Setting: General community (online). Read More

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Reported Outcome Measures in Studies of Real-World Ambulation in People with a Lower Limb Amputation: A Scoping Review.

Sensors (Basel) 2022 Mar 14;22(6). Epub 2022 Mar 14.

Department of Occupational Therapy, Prosthetics and Orthotics, Faculty of Health Sciences, Oslo Metropolitan University, P.O. Box 4, St. Olavs Plass, 0130 Oslo, Norway.

Background: The rapidly increasing use of wearable technology to monitor free-living ambulatory behavior demands to address to what extent the chosen outcome measures are representative for real-world situations. This scoping review aims to provide an overview of the purpose of use of wearable activity monitors in people with a Lower Limb Amputation (LLA) in the real world, to identify the reported outcome measures, and to evaluate to what extent the reported outcome measures capture essential information from real-world ambulation of people with LLA.

Methods: The literature search included a search in three databases (MEDLINE, CINAHL, and EMBASE) for articles published between January 1999 and January 2022, and a hand-search. Read More

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A Robotic Test Rig for Performance Assessment of Prosthetic Joints.

Front Robot AI 2021 7;8:613579. Epub 2022 Mar 7.

Bristol Robotics Laboratory, Department of Engineering Design and Mathematics, University of the West of England, Bristol, United Kingdom.

Movement within the human body is made possible by joints connecting two or more elements of the musculoskeletal system. Losing one or more of these connections can seriously limit mobility, which in turn can lead to depression and other mental issues. This is particularly pertinent due to a dramatic increase in the number of lower limb amputations resulting from trauma and diseases such as diabetes. Read More

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Satisfaction of lower limb amputees with their prostheses and with the clinical services - a cross-sectional survey.

J Pak Med Assoc 2022 Feb;72(2):260-264

Department of Biomedical Engineering, Ziauddin University, Karachi, Pakistan.

Objective: To evaluate the amputees' satisfaction with their prostheses and with the clinical services.

Methods: The cross-sectional study was conducted at the Medical Rehabilitation Hospital, Madinah, Saudi Arabia, from August 2018 to November 2019, and comprised unilateral, traumatic lower limb amputees. Data was collected using the client satisfaction with the device, and the client satisfaction with service modules of the Orthotics and Prosthetics User's Survey instrument. Read More

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February 2022

Reliability of three different methods for assessing amputee residuum shape and volume: 3D scanners vs. circumferential measurements.

Prosthet Orthot Int 2022 Mar 23. Epub 2022 Mar 23.

Department for Health, University of Bath, Bath, United Kingdom.

Background: Objective and reliable methods are necessary to monitor and manage amputee residuum shape and volume and design prosthetic residuum-prosthesis interfaces. Portable 3D scanners are potential solutions for digitally recording the amputee residuum characteristics.

Objective: To investigate test-operator reliability when measuring lower limb residuum shape and volume using two different types of 3D laser-free scanners compared with tape measurements generally adopted in clinic. Read More

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Identifying and linking prosthetic outcomes to the ICF framework: a step to inform the benefits measured in prosthetic health economic evaluations.

Disabil Rehabil 2022 Mar 17:1-11. Epub 2022 Mar 17.

Discipline of Prosthetics and Orthotics, Department of Physiotherapy, Podiatry, Prosthetics and Orthotics, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Australia.

Purpose: Prosthetic research seems focused on measuring gait-related outcomes that may not adequately measure real-world benefits of prosthetic interventions. Systematically cataloguing a comprehensive range of outcomes is an important steppingstone towards developing a holistic way to measure the benefits of prosthetic interventions for future health economic evaluations. The purpose of this research was to identify and catalogue the outcomes measured in lower-limb prosthetic research using the International Classification of Functioning, Disability, and Health (ICF) framework and a custom clinical framework, and thereby describe the existing research focus and identify evidence gaps. Read More

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A Multimodal Sensory Apparatus for Robotic Prosthetic Feet Combining Optoelectronic Pressure Transducers and IMU.

Sensors (Basel) 2022 Feb 23;22(5). Epub 2022 Feb 23.

The BioRobotics Institute, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.

Timely and reliable identification of control phases is functional to the control of a powered robotic lower-limb prosthesis. This study presents a commercial energy-store-and-release foot prosthesis instrumented with a multimodal sensory system comprising optoelectronic pressure sensors (PS) and IMU. The performance was verified with eight healthy participants, comparing signals processed by two different algorithms, based on PS and IMU, respectively, for real-time detection of heel strike (HS) and toe-off (TO) events and an estimate of relevant biomechanical variables such as vertical ground reaction force (vGRF) and center of pressure along the sagittal axis (CoPy). Read More

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February 2022

Loading characteristics data applied on osseointegrated implant by transfemoral bone-anchored prostheses fitted with state-of-the-art components during daily activities.

Data Brief 2022 Apr 10;41:107936. Epub 2022 Feb 10.

ÖSSUR, Reykjavik, Iceland.

The data in this paper are related to the research article entitled "Load applied on osseointegrated implant by transfemoral bone-anchored prostheses fitted with state-of-the-art prosthetic components" (Frossard et al. Clinical Biomechanics, 89 (2021) 105457. DOI: 10. 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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Measuring discomfort-An objective method for quantifying peak pressure discomfort and improved fit in adults with transtibial amputation.

PM R 2022 Mar 1. Epub 2022 Mar 1.

Engineering Product Development, Singapore University of Technology and Design, Singapore, Singapore.

Background: Prosthetic socket coupling with the residual limb should be comfortable without causing skin breakdown or excessive pressure. However, users report socket discomfort, and there is a scarcity of objective measurements available to assess this feeling of discomfort. Quantifying the specific pressure may enable clinicians and users to determine and improve comfort levels objectively. Read More

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Subthreshold Vibration Influences Standing Balance but Has Unclear Impact on Somatosensation in Persons With Transtibial Amputations.

Front Physiol 2022 2;13:810079. Epub 2022 Feb 2.

Department of Biomechanics, University of Nebraska Omaha, Omaha, NE, United States.

Stochastic resonance has been successfully used to improve human movement when using subthreshold vibration. Recent work has shown promise in improving mobility in individuals with unilateral lower limb amputations. Furthering this work, we present an investigation of two different signal structures in the use of stochastic resonance to improve mobility in individuals with unilateral lower limb amputations. Read More

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February 2022

[Current issues of disability and rehabilitation of elderly and senile patients with lower limb loss due to vascular pathology.]

Adv Gerontol 2021 ;34(6):891-900

Saint-Petersburg Institute of Bioregulation and Gerontology, 3 pr. Dynamo, St. Petersburg 197110, Russian Federation.

The majority of patients with amputation defect of the lower extremities are elderly citizens with high co- and polymorbidity, the presence of several geriatric syndromes, which adversely affects the prognosis, reduces the rehabilitation potential, in some cases leads to the development of cardiovascular complications, amputation of the second limb, severe disability and high postoperative mortality. The key link in the rehabilitation process of disabled people with a lower limb stump is to provide them with a functional prosthesis. The article provides an analysis of morbidity, primary disability in the period from 2015 to 2019, gender, age and clinical characteristics of patients living in St. 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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Investigating the effects of conventional thermoplastic ankle-foot and the neoprene ankle-foot orthoses on the kinetics and kinematics of gait in people with foot drop following traumatic injury of the peroneal nerve: A pilot study.

Foot (Edinb) 2022 Mar 30;50:101898. Epub 2021 Dec 30.

Division of Physical Medicine & Rehabilitation, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2G3, Canada. Electronic address:

Background: Adopting compensatory walking mechanisms by people with foot drop due to traumatic injury of the peroneal nerve costs altered gait kinetics and kinematics. Therefore, orthoses are generally recommended to minimize the deployment of compensatory gait mechanisms.

Objectives: To investigate the immediate effects of a low-cost, Neoprene Ankle-Foot Orthosis (NAFO) and the thermoplastic ankle-foot orthosis (AFO) with the shoe-only condition on kinematics and kinetics of gait of people with foot drop following peroneal nerve traumatic injury. Read More

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Benefits of a microprocessor-controlled prosthetic foot for ascending and descending slopes.

J Neuroeng Rehabil 2022 01 28;19(1). Epub 2022 Jan 28.

Research Biomechanics, CR&S, Ottobock SE & Co. KGaA, Göttingen, Germany.

Background: Prosthetic feet are prescribed for persons with a lower-limb amputation to restore lost mobility. However, due to limited adaptability of their ankles and springs, situations like walking on slopes or uneven ground remain challenging. This study investigated to what extent a microprocessor-controlled prosthetic foot (MPF) facilitates walking on slopes. Read More

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January 2022

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

Nonlinear analysis of dynamic stability in walking with toe-only rocker sole shoes in elderly.

Med Eng Phys 2022 01 12;99:103738. Epub 2021 Dec 12.

Aging Department, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.

Background: Elderly subjects are at the risk of falling. One type of shoe intervention used for this group of the subjects is the shoe with rocker. The aim of this study was to investigate the effects of shoes with various degrees of rockers on dynamic stability of elderly subjects while walking. Read More

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January 2022