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73 active trials for Amputation

The CLI-AMP Registry

Single-center, observational registry study with a prospective and retrospective arm to evaluate the impact of multidisciplinary CLI teams and protocol on amputation rates, vascular studies, revascularization, in-hospital and long-term outcomes.

Start: August 2020

Motor Learning in Individuals With Lower Limb Loss and Chronic Diabetes

Inadequate rehabilitation training after amputation can result in poor patient outcomes, injuries, and wasted healthcare resources. This is a serious public health problem due to an aging population and rising prevalence of diabetes (main cause of amputation in the U.S.). In this study, the investigators will examine the effects of external vs. internal attentional focus instruction on learning of a balance task in individuals with existing amputation and those at risk of amputation (older adults with diabetes). With the proposed research, the investigators aim to expand the understanding of motor learning in individuals with and at risk of lower limb loss to provide knowledge that will lead to more effective and efficient rehabilitation.

Start: October 2019

Comparison of Dual Task Gait Characteristics in Individuals With Amputation and Healty Individuals

In amputee, dual task has been found to cause a decrease in walking speed. However, there is no study of how gait characteristics are affected when the speed does not change. The aim of this study is to compare the time-distance characteristics of walking with single task, cognitive dual task, motor dual task in transtibial, transfemoral amputee and healthy people.

Start: February 2020

Pain After Proximal Digital Amputation Prevention

Finger amputations are common and may be complicated by debilitating nerve pain. This study seeks to determine if nerve pain after digital amputation can be more effectively prevented with either of two new surgical techniques-targeted muscle reinnervation (TMR) or regenerative peripheral nerve interfaces (RPNI)-compared to standard treatment by traction neurectomy (TN).

Start: March 2020

Revofit™ System Evaluation on Residual Limb Pain in Amputee Patients

At the early stage of the amputation, the residual limb presents post-surgical fluctuations related to post-operative phase, which would need a frequent prosthetic adjustment. In most cases, the volume of residual limb is constant from 12 to 18 months after surgery. However, some daily fluctuations could appear due to an underlying vascular disease for example, which could be painful and impact the quality of life with a constant need of prosthetics adjustment. The goal of this study is to assess the effectiveness of a system-adjusted fitting in comparison with a standard fitting.

Start: May 2020

Development of the ICF Based Amputee Mobility Scale

Lower limb amputation is a condition that reduces individuals' independence in daily life. Therefore, the main purpose of the rehabilitation process is to reintegrate the person as an independent and productive person as soon as possible. Although scales are frequently used in mobility evaluation in the clinic, they do not measure the advanced activities of patients. Therefore, the aim of the study is to obtain a comprehensive scale evaluating mobility in amputee. The mobility scale will be created using the two-round Delphi method. ICF (International Classification of Functioning Disability and Health) created by the World Health Organization, mobility subheading will be evaluated, and the questions that will be included in the scale will be compiled. In line with the data to be obtained from experts, a scale will be created.Scale and gold standard tests will be applied to patients so that validation of the scale will be investigated.

Start: April 2020

e-OPRA Implant System for Lower Limb Amputees

The e-OPRA Implant System, is a further development of the OPRA (Osseointegrated Prostheses for the Rehabilitation of Amputees) Implant System, approved under HDE (Humanitarian Device Exemption) H080004. The e-OPRA Implant system is an implant system for direct skeletal anchorage of amputation prostheses. The added feature in the e-OPRA Implant system, is a bidirectional interface into the human body that allows permanent and reliable communication using implanted electrodes. These electrodes will provide long-term stable bioelectric signals for an improved control of the prosthetic limb. The purpose of the study is to evaluate the feasibility of a lower limb amputee with the e-OPRA Implant System exhibiting full neural control over a neuro-mechanical prosthetic system. A maximum of six subjects will be enrolled. Each subject will undergo a surgery where the e-OPRA Implant System will be implanted. The subjects will participate in follow-up sessions of which the last one occurs approximately 24 months after the surgery. This is a prospective, non-randomized, uncontrolled study.

Start: January 2018

A Clinical and Histological Analysis of Mesenchymal Stem Cells in Amputation

Patients undergoing semi-elective lower extremity major amputation from complications associated with atherosclerotic limb ischemia will received intra-muscular injections of allogeneic Mesenchymal Stromal Cells in the leg above and below the point of amputation to prevent ischemic wound complications after surgery and decrease the incidence of revision and further amputation.

Start: January 2017

Postoperative Peripheral Nerve Stimulation for Management of Post-amputation Pain

Limb loss is frequently associated with postamputation pain that can be challenging to treat and often involves opioids. Advances in the field of neuromodulation has led to development of an intentionally reversible percutaneous peripheral nerve stimulation (PNS) system that has had promising results when treating chronic postamputation pain. PNS may offer sustained pain relief even after the treatment period has ended. Currently, there is no convincing evidence regarding the role of PNS in the acute postoperative period, which may be a critical time to control pain as those with higher pain appear to be at higher risk for developing persistent post-procedural pain. The investigators of this study aim to evaluate the feasibility and effects of PNS in the acute postoperative period and determine the feasibility of completing a randomized controlled treatment outcome study.

Start: December 2017

Improving Prosthetic Care for Patients With a Lower Limb Amputation

Adults with lower limb amputation undergo rehabilitation in order to learn how to effectively use a lower limb prosthesis. Unfortunately, the process of being fitted a prosthesis can be delayed due to resource constraints and manufacturing times, which delays the rehabilitation process and puts patients at higher risk for functional decline. Preliminary work by our team have shown that our 3D printing system, 3DPrintAbility Devices by NIA (http://niatech.org/), perform at the same level of efficacy as traditionally manufactured prosthetics, which suggests that a digital manufacturing tool-chain is a viable alternative and may be desirable given the time savings involved. In order to lead to improved processes related to prosthesis fitting for adult transtibial amputees, we want to assess the feasibility and acceptability of using 3DPrintAbility sockets in this population. Specifically, we want to determine if: 1) the 3D printing of transtibial prosthetic sockets can provide better quality prosthetic care in regards to cost, timeliness, and accessibility; 2) 3D printed sockets are equivalent in quality to standard thermoplastic preparatory sockets in regards to safety, fit, durability and comfort; and 3) whether a 3D scanning, design and printing process can be integrated into the workflow of current rehab centres. If successful, the findings from this work can provide an innovative approach for facilitating the fitting of a socket for adults with amputation might provide significant savings to the healthcare system by making the process more efficient while optimizing clinical outcomes by allowing patients to begin their rehabilitation sooner

Start: May 2018

Evaluating the Outcomes for Incisional Application of Negative Pressure for Nontraumatic Amputations

The purpose of this study is to evaluate how well subjects heal after surgery who receive standard dressings or incisional negative pressure wound therapy for non-traumatic amputation sites.

Start: November 2017

Virtual Neuroprosthesis: Restoring a Sense of Touch to Amputees

The overall goal of this project is to develop a virtual neuroprosthesis in which a facsimile of a neural implant is externalized and housed in a well-controlled microfluidic chamber, thereby abating the intrinsic limitations of highly invasive studies with neural implants. Able-bodied and upper limb amputee subjects will be recruited to control a dexterous artificial hand and arm with electromyogram signals while electroencephalogram (EEG) signals are simultaneously measured. Robotic grip force measurements will be biomimetically converted into electrical pulses similar to those found in the peripheral nervous system to catalyze in vitro nerve regeneration after neurotrauma. The synergistic contributions of this multidisciplinary project will lead to a transformative understanding of the symbiotic interaction of neural plasticity within human-robotic systems. Currently, there is no systematic understanding of how tactile feedback signals can contribute to the neural regeneration of afferent neural pathways to restore somatosensation and improve motor function in amputees fitted with neuroprosthetic limbs. Tackling this problem will be a significant breakthrough for the important field of neuroprosthetics.

Start: October 2017

Clinical Evaluation of Bilateral Hand Allograft: Pilot Study of 7 Cases

The double amputation of the forearms is a rare handicap that seriously impacts the autonomy and the quality of life of patients, social and familial exclusion, and dependence on third parties for everyday activities. The management of these patients is nearly exclusively through the use of prostheses. Certain patients refuse this solution, or remain penalized by the absence of sensation, the lack of precision in movements, and body image issues related to the amputation; the double graft of hands and forearms may, in this circumstance, be the only solution. The objective of this pilot study was designed to evaluate the cerebral plasticity of patients who undergo bilateral hand allograph

Start: January 2000