View clinical trials related to Amputation; Traumatic, Hand.
Filter by:The goal of this study is to utilize the Gaze and Movement Assessment (GaMA) metric to assess the effect of different prosthetic components on compensatory movements used to complete activities of daily living.
The purpose of this research study is to see how well a new type of myoelectric prosthesis works. A myoelectric prosthesis is a robotic limb for amputees that is controlled by sensing the activity of muscles in the body above the amputation level. This study involves a medical procedure to implant the Myoelectric Implantable Recording Array (MIRA) in the residual limb. The procedure will be performed under sedation by a physician. When muscles contract, they generate an electrical signal that can be sensed by MIRA and used to control the prosthetic limb. Myoelectric prosthetic limbs normally use electrodes that are placed on the surface of the skin to control different movements. However, MIRA is implanted under the skin, which could improve the ability to control the myoelectric prosthesis. After the MIRA is implanted, training will occur to learn how to control the prosthesis using the muscles in the residual limb. The device can stay implanted for up to one year. The device will be removed (explanted) by a physician.
The finger and fingertip are the most frequently amputated body parts, due to work-related incidents. Yet because of space, weight and cost constraints, prosthetic fingers and fingertips are heavy and bulky with limited active motion and sensation. Most are basic variations on the hook and claw. Lower limb prostheses have become extremely technologically advanced in their design and materials, and upper limbs lag behind in all of these areas. This is due to the complexity of the anatomy and function of the upper limb compared to the lower. There are no commercially available prostheses that offers direct sensory feedback and as such, rely on visual feedback from the wearer. The original PROLIMB study (PROLIMB I) used a Leap Motion Controller (LMC) to investigate the type of grasp adaptation that have been undertaken by patients during the rehabilitation process following amputation and compared this to similar data from healthy volunteers. PROLIMB I also looked at refining the tactile feedback system by investigating the sensation felt on amputation sites in order to feed this information into the haptic feedback system. The vision of the PROLIMB II project is to build on the work completed in PROLIMB I and develop and combine mechanistic models of hand motion and haptic sensing to deliver novel, affordable body-powered prosthetic fingertip digits with enhanced motion and sensation to address current clinical needs and support the quality of life of amputees. With collaboration from the University of Warwick (UoW) and University College London (UCL), Steeper Group and Naked Prosthetics the PROLIMB II study will aim to model, design, fabricate and validate a body-powered prosthetic fingertip digit with integrated sensory feedback. The University Hospital Coventry & Warwickshire (UHCW) will provide the clinical facility with which to assess the comfort, usability and acceptance of this prosthetic in the daily lives of patients with digit amputations. This project will be a proof of concept study with verification of the prosthetic in motion capture (gait) laboratories as well as the use of simple validation data collection over a longer period.
The purpose of this study is to compare functional outcomes in single digit replantation subjects compared with revision amputation. Functional outcomes will be assessed by DASH (disabilities of the arm, shoulder and hand) score and with Purdue Pegboard Test by the subject's respective hand therapist at their last visit. Results will contribute to generating a preoperative decision algorithm for single digit amputation injuries.
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.
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.