Cited by 90Muscle activation and electromyography studiesProsthetics and Rehabilitation RoboticsNeuroscience and Neural Engineering

Grip control and motor coordination with implanted and surface electrodes while grasping with an osseointegrated prosthetic hand

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Mastinu, Enzo, Clemente, Francesco, Sassu, Paolo, Aszmann, Oskar, Brånemark, Rickard, Håkansson, Bo, Controzzi, Marco, Cipriani, Christian +1 more·2019·Journal of NeuroEngineering and Rehabilitation

Abstract

BACKGROUND: Replacement of a lost limb by an artificial substitute is not yet ideal. Resolution and coordination of motor control approximating that of a biological limb could dramatically improve the functionality of prosthetic devices, and thus reduce the gap towards a suitable limb replacement. METHODS: In this study, we investigated the control resolution and coordination exhibited by subjects with transhumeral amputation who were implanted with epimysial electrodes and an osseointegrated interface that provides bidirectional communication in addition to skeletal attachment (e-OPRA Implant System). We assessed control resolution and coordination in the context of routine and delicate grasping using the Pick and Lift and the Virtual Eggs Tests. Performance when utilizing implanted electrodes was compared with the standard-of-care technology for myoelectric prostheses, namely surface electrodes. RESULTS: Results showed that implanted electrodes provide superior controllability over the prosthetic terminal device compared to conventional surface electrodes. Significant improvements were found in the control of the grip force and its reliability during object transfer. However, these improvements failed to increase motor coordination, and surprisingly decreased the temporal correlation between grip and load forces observed with surface electrodes. We found that despite being more functional and reliable, prosthetic control via implanted electrodes still depended highly on visual feedback. CONCLUSIONS: Our findings indicate that incidental sensory feedback (visual, auditory, and osseoperceptive in this case) is insufficient for restoring natural grasp behavior in amputees, and support the idea that supplemental tactile sensory feedback is needed to learn and maintain the motor tasks internal model, which could ultimately restore natural grasp behavior in subjects using prosthetic hands.

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Authors
Mastinu, E., Clemente, F., Sassu, P., Aszmann, O., Brånemark, R., Håkansson, B., Controzzi, M., Cipriani, C., & Ortiz-Catalan, M.
Affiliations
  • Chalmers University of Technology (SE)
  • Scuola Superiore Sant'Anna (IT)
  • Sahlgrenska University Hospital (SE)
  • Medical University of Vienna (AT)
  • University of Gothenburg (SE)
Corresponding author
Mastinu, Enzo
Venue
Journal of NeuroEngineering and Rehabilitation
Published
2019-04-11
Volume
16
Issue
1
Pages
49-49
ISSN
1743-0003 (ISSN-L)
OpenAlex
W2942254053
Cited by
87
References
36
Citations by year
2026: 20 · 2025: 13 · 2024: 7 · 2023: 9 · 2022: 6 · 2021: 13 · 2020: 14 · 2019: 5
FWCI
3.34
Type
journal article
Language
en
Open access
Locations
  • Journal of NeuroEngineering and Rehabilitation (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Chalmers Research (Chalmers University of Technology) (submittedVersion)
  • CINECA IRIS Institutional Research Information System (Sant'Anna School of Advanced Studies) (submittedVersion, cc-by-nc-nd)
Funders
  • Vetenskapsrådet
  • H2020 European Research Council (687905, 679820)
  • Stiftelsen Promobilia
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Physical Sciences › Engineering › Biomedical Engineering › Prosthetics and Rehabilitation Robotics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
Keywords
transhumeral amputation, surface electrodes, grip control, motor coordination, myoelectric prosthesis, grip force, visual feedback, internal models
MeSH terms
Amputees, Artificial Limbs, Electrodes, Implanted, Electromyography, Female, Humans, Male, Psychomotor Performance, Reproducibility of Results, Hand Strength, Feedback, Sensory

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