Evaluating a new prosthesis control system for amputees
Official title: Clinical Feasibility of the IMES Transradial Prosthesis
Run by Össur Iceland ehf · NCT04936789 · Data updated 2026-11-12
This study is testing a new way for amputees to control a prosthetic hand using special sensors implanted in their arm muscles to see how well it works in everyday life.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 3 (estimated) |
| Sponsor | Össur Iceland ehf Industry-sponsored |
| Locations | 1 site (Glasgow, Glasgow) |
| Status | Recruiting |
| Started | January 1, 2023 |
| Main results expected | January 2028 |
| Study ends | January 2028 |
| Registry record updated | October 21, 2026 |
| Trial ID | NCT04936789 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals with unilateral acquired transradial amputations who have sufficient residual muscle for implantation.
✕Probably not a fit
Patients with neurological disorders or other conditions that may hinder accurate control of the prosthesis will not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study assesses the feasibility of using implanted myoelectric sensors (IMES) to control a transradial prosthesis in amputee subjects. The IMES will be implanted into the residual forearm muscles of three participants, allowing them to wirelessly transmit muscle signals to an electromechanical prosthetic wrist and hand. After a recovery period, subjects will undergo training and then use the custom-fit prosthesis at home for approximately four months, with follow-up visits to evaluate usability and functionality.
Why it matters
Potential benefit: If successful, this approach could significantly enhance the control and functionality of prosthetic limbs for amputees.
How similar studies have gone: While the use of myoelectric sensors in prosthetics is established, this specific approach with IMES is novel and has not been extensively tested in similar studies.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * (unilateral acquired transradial) amputation * residual limb size requirements to fit investigational device componentry * at least 6 residual muscle locations available for implantation * good compliance with health service (rehabilitation) * willing to undergo surgical implantation of IMES Sensor implants * experience with myoelectric upper limb prostheses * using own myoelectric device approximately 6-8h/day * able to provide informed consent and attend the study visits Exclusion Criteria: * any condition which in the opinion of the investigator poses a risk to health * neurological disorder that may prohibit accurate control * major injury proximal to the level of amputation * neuromuscular disorder * nerve transection or palsy that may cause de-innervation of muscles planned for implantation * allergy to implanted materials * existing active implant
Where it's running
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NHS Greater Glasgow and Clyde
Glasgow, Glasgow, United Kingdom Recruiting
Study contacts
- Principal investigator: Aidan Roche, MD — NHS; University of Edinburgh
- Study coordinator: Daire McGuinness, BSc
- Email: dmcguinness@ossur.com
- Phone: 00441315070097
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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This study is testing whether powered knee and ankle prosthetics can help transfemoral amputees walk better, especially when combined with special training.
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Evaluation of a new myoelectric prosthesis for transradial amputees
This study is testing a new type of prosthetic arm that uses a special implant to help people with below-the-elbow amputations control it more easily and naturally.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.