View clinical trials related to Amputation, Traumatic.
Filter by:ORTHOPUS develops assistive technologies to address the lack of availability of medical devices in low and middle income countries. With the help of HI (Handicap International) Nepal, the need for upper limb prostheses was identified. Indeed, according to the literature - especially Efficiency of voluntary opening hand and hook prosthetic devices: 24 years of development? (JRRD, Volume 49, Number 4, 2012) -, today available solutions do not fully address patients' needs. In Nepal, only 2 upper limb prostheses options are generally proposed to patients because of supply and cost constraints. ORTHOPUS' objective is to extend patients' autonomy with a new set of prosthetic solutions. By offering low cost but high quality devices (according to CE marking requirements), another of the ORTHOPUS' missions is also to address supply and cost constraints. To improve patients' capabilities, ORTHOPUS aims at extending grasping capabilities compared to the usual passive aesthetic hand or voluntary opening one by proposing the following set of solutions: - an aesthetic articulated hand - a mechanical wrist - a work hook In order to assess the different stated hypotheses, a clinical trial is set jointly with HI Nepal. 14 patients will be enrolled in 2 cohorts (n1 = 7, n2 = 7), the first one is constituted with patients usually using an aesthetic passive hand whereas the second one comprise patients normally equipped with voluntary opening hand. After selecting and getting the informed consent of the patients, a month to make the sockets and adapt it to patients is planned. An evaluation of their quality of life will be done with the WHO QOL - BREF quality of life assessment before and after the test period of the trial. ORTHOPUS' set of prosthetic solutions will be tested by them over one month. They will have to fill on a daily basis a survey (OPUS) assessing their use of the prostheses. At the end of the test period, different questionnaires and surveys will be filled during a last interview to collect data. Data will be analysed in order to extract evidence for or against the trial hypotheses. With these results, a report will be written and submitted to the GATE (Global Cooperation on Assistive Health Technology) community managed by WHO. This report will also feed the ORTHOPUS R&D with patients' feedbacks and, research findings will be shared publicly on different social media in respect with patient privacy.
The purpose of this research is to test an investigational fabrication system for transtibial prostheses. This fabrication method will be tested for comfort and function to determine feasibility of use for amputees in developing countries. To address the need for high quality and affordable prosthetic technology in developing countries, the investigators have developed a simplified socket fitting protocol using expandable rigid foam. The foam is formed by mixing small amounts of two liquid components, which typically expands to several times its original volume.
The purpose of this study is to determine the effectiveness of therapeutic dose intravenous heparin at improving replantation/revascularization success and its indications (if any) in participants who have suffered traumatic digital amputation. Digital replantation/revascularization success will be assessed in participants who receive continuous intravenous drip of thromboprophylactic heparin at a therapeutic dose (i.e. modifies INR to the desired range) contrasted to those who do not receive therapeutic dose heparin (i.e. does not modify INR to the desired range). In the study, replantation/revascularization success is defined as a clearly viable digit at the time of discharge. Secondary objectives include assessing postoperative complications associated with heparin use, such as bleeding, hematoma or heparin induced thrombocytopenia. The investigators would also assess the impact of categorical variables such as smoking status, mechanism of injury and comorbidities, on digital survival.
The goals of this study are to provide sensory information to amputees and reduce phantom limb pain via electrical stimulation of the lumbar spinal cord and spinal nerves. The spinal nerves convey sensory information from peripheral nerves to higher order centers in the brain. These structures still remain intact after amputation and electrical stimulation of the dorsal spinal nerves in individuals with intact limbs and amputees has been demonstrated to generate paresthetic sensory percepts referred to portions of the distal limb. Further, there is recent evidence that careful modulation of stimulation parameters can convert paresthetic sensations to more naturalistic ones when stimulating peripheral nerves in amputees. However, it is currently unclear whether it is possible to achieve this same conversion when stimulating the spinal nerves, and if those naturalistic sensations can have positive effects on phantom limb pain. As a first step towards those goals, in this study, the investigators will quantify the sensations generated by electrical stimulation of the spinal nerves, study the relationship between stimulation parameters and the quality of those sensations, measure changes in control of a prosthesis with sensory stimulation, and quantify the effects of that stimulation on the perception of the phantom limb and any associated pain.
Upper extremity allotransplantation is a new procedure which is becoming more common in the United States. Ongoing data collection for research purposes is vital to the long-term assessment as to the safety of the procedure and accompanying immunosuppression protocol, as well as quantifying patient outcomes and changes in quality of life. For these reasons, The Johns Hopkins Hand/Arm Transplantation Team is interested in enrolling transplanted patients in a follow-up protocol to continue collecting informative data to further the field of vascularized composite allotransplantation.
Our goal is to temporarily implant the following groups for 540 +/- 30 days: 1. Forearm FAST electrodes 1. Five human partial hand amputees (amputated at the level of the hand) with 2 FAST electrodes in the ulnar nerve and 2-5 FAST electrodes in the median nerve. 2. Five human hand and forearm amputees (amputated at the level of the forearm) with 2 FAST electrodes in the ulnar nerve and 2-5 FAST electrodes in the median nerve . 2. Arm FAST electrodes 1. Five human partial hand amputees (amputated at the level of the hand) with 2 FAST electrodes in the ulnar nerve and 2-5 FAST electrodes in the median nerve. 2. Five human hand and forearm amputees (amputated at the level of the forearm) with 2 FAST electrodes in the ulnar nerve and 2-5 FAST electrodes in the median nerve. 3. Five human hand, forearm and arm amputees (amputated at the level of the arm) with 2 FAST electrodes in the ulnar nerve and 2-5 FAST electrodes in the median nerve.
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 sensitivity , 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. Since January 2000, date of the first double hand graft, six bilateral grafts of hands have been performed at the Hospices Civils de Lyon. This first study reported the feasibility of the graft. The functional results obtained after the double transplant have allowed patients to recover complete autonomy for everyday activities, at the price of an immunosuppressive treatment. We have found that these very good functional results are maintained over time and, for a certain number of patients, to return to work which is a factor of social integration. The rate of medical complications (metabolic, infectious, oncological), essentially related to the immunosuppressive treatment, is not greater to that found for other types of graft, but are considered as a limiting factor for the development of this strategy. These results are confirmed by international experience that is of the same order. Only a few rare cases of re-amputation have been reported in patients for whom the immunosuppressive treatment was discontinued or following vascular thrombosis. A new study is required to continue this evaluation and to compare double graft to prostheses in terms costs, quality of life, usefulness, satisfaction, autonomy, and social integration. The results of this study will allow the placement of these strategies in the management of patients with double amputation of the hands and forearms.
Fingertips facilitate smooth motor activity, precise sensation, and the delicate movement of the hands and have an aesthetic function. Fingertip injuries are defined as injuries occurring distal to the insertion of the flexor and extensor tendons. These injuries are one of the most common trauma injuries presented in acute care settings, accounting for approximately 4.8 million emergency department visits per year in the United States.(1) Fingertip amputations may not constitute the majority among these fingertip injuries but can have a complex spectrum of injury. In these cases, the reconstruction methodologies focus on preserving the digital length, ensuring adequate soft tissue coverage, preserving the nail structure, achieving a well-contoured and painless fingertip, and restoring durable and sensate skin. There are so many factor that influence the result of composite graft in distal finger tip amputation. Investigators will collected the data including the size of amputee , shape, level of amputation, mechanism of amputation, if hyperbaric oxygen therapy, operation procedures.
Injuries to the genitalia are of concern to the military with emphasis placed on the surgical reconstruction and psychological health of these Wounded Warriors. However, despite significant surgical advances in microvascular surgery and autologous free tissue transfer, conventional reconstructions cannot truly replace the complicated structures and functions of the penis including the urethra, erogenous sensation, and erectile corporal bodies. Conventional reconstruction poses several challenges: patients may not have sufficient donor tissue due to other injuries or previous surgery; multiple operations are often needed to restore the neophallus; the final reconstruction only approximates the penis' native form; recreating the urethra is challenging and the new urethra is prone to stricture and fistula formation; the erectile function necessary for sexual intercourse is often lacking; and insufficient protective sensation can lead to penile implant extrusion, infection, subsequent explantation or loss of the reconstruction. The investigators propose this clinical trial to determine functional outcomes and quality of life for Wounded Warriors and civilians who choose to undergo penile allotransplantation. The investigators will combine extensive experience performing total penile reconstruction in a large population affected by congenital, traumatic, and therapeutically extirpated Genitourinary deformities and expertise in reconstructive transplantation using an immunomodulatory protocol to for this study. The investigators anticipate penile transplantation can potentially replace "like with like," restoring the appearance, anatomy, and function of the recipient in a manner far superior to autologous reconstruction. This project will establish the ability to perform penile allotransplantation using an immunomodulatory protocol and will compare outcomes with conventional phalloplasty patient results. Study Design: This is a non-randomized subject self-controlled clinical trial to implement a cell-based immunomodulatory protocol for penile allotransplantation. An intermediate deliverable is achieving allograft survival and functional return with reduced dosing/frequency of maintenance immunosuppression on steroid-free monotherapy (tacrolimus) immunosuppression. The long-term deliverable and goal is to demonstrate superior outcomes when compared to satisfaction and QOL in conventional phalloplasty patients 12-60 months post-transplant.
Background: Millions of people each year sustain injuries, have tumors surgically removed, or are born with defects that require complex reconstructive surgeries to repair. In the case of hand, forearm, or arm amputation, prostheses only provide less than optimal motor function and no sensory feedback. However, hand and arm transplantation is a means to restore the appearance, anatomy, and function of a native hand. Although over 70 hand transplants have been performed to date and good functional results have been achieved, widespread clinical use has been limited due to adverse effects of life-long and high-dose immunosuppression needed to prevent graft rejection. Risks include infection, cancer, and metabolic problems, all of which can greatly affect recipients' quality of life, make the procedure riskier, and jeopardize the potential benefits of hand transplantation. Study Design: This non-randomized, Phase II clinical trial will document the use of a new immunomodulatory protocol (aka - Pittsburgh Protocol, Starzl Protocol) for establishing hand transplantation as a safe and effective reconstructive treatment for upper extremity amputations by minimizing maintenance immunosuppression therapy in unilateral and bilateral hand/forearm transplant patients. This protocol combines lymphocyte depletion with donor bone marrow cell infusion and has enabled graft survival using low doses of a single immunosuppressive drug followed by weaning of treatment. Initially designed for living-related solid organ donation, this regimen has been adapted for use with grafts donated by deceased donors. The investigators propose to perform 30 human hand transplants employing this novel protocol. Specific Aims: 1) To establish hand transplantation as a safe and effective reconstructive strategy for the treatment of upper extremity amputations; 2) To reduce the risk of rejection and enable allograft survival while minimizing the requirement for long-term high dose multi-drug immunosuppression. Significance of Research: Hand transplantation could help upper extremity amputees recover functionality, self-esteem, and the capability to reintegrate into family and social life as "whole" individuals. The protocol offers the potential for minimizing the morbidity of maintenance immunosuppression, thereby beneficially shifting the risk/benefit ratio of this life-enhancing procedure and enabling widespread clinical application of hand transplantation.