DOES TRANS-RADIAL LONGITUDINAL COMPRESSION INFLUENCE MYOELECTRIC CONTROL?
Notice bibliographique
Résumé
BACKGROUND: Existing trans-radial prosthetic socket designs are not optimised to facilitate reliable myoelectric control. Many socket designs pre-date the introduction of myoelectric devices. However, socket designs featuring improved biomechanical stability, notably longitudinal compression sockets, have emerged in more recent years. Neither the subsequent effects, if any, of stabilising the limb on myoelectric control nor in which arrangement to apply the compression have been reported. METHODOLOGY: Twelve able-bodied participants completed two tasks whilst wearing a longitudinal compression socket simulator in three different configurations: 1) compressed, where the compression strut was placed on top of the muscle of interest, 2) relief, where the compression struts were placed either side of the muscle being recorded and 3) uncompressed, with no external compression. The tasks were 1) a single-channel myoelectric target tracking exercise, followed by 2), a high-intensity grasping task. The wearers’ accuracy during the tracking task, the pressure at opposing sides of the simulator during contractions and the rate at which the limb fatigued were observed. FINDINGS: No significant difference between the tracking-task accuracy scores or rate of fatigue was observed for the different compression configurations. Pressure recordings from the compressed configuration showed that pressure was maintained at opposing sides of the simulator during muscle contractions. CONCLUSION: Longitudinal compression does not inhibit single-channel EMG control, nor improve fatigue performance. Longitudinal compression sockets have the potential to improve the reliability of multi-channel EMG control due to the maintenance of pressure during muscle contractions. Layman's Abstract Most prosthetic limbs are attached to the body using a rigid, cup-like socket shaped to each individual limb. Prosthetic arms attached to a residual forearm are called trans-radial prostheses, and bionic hands and grippers, formally referred to as myoelectric devices, are types of attachments which can be affixed to trans-radial prostheses. The sockets used in conjunction with myoelectric devices today pre-date the clinical introduction of myoelectric devices, and therefore are not optimised to facilitate signal transmission. Newer socket styles have emerged, with the aim of improving comfort and stability, notably those featuring areas of longitudinal compression running parallel to the underlying bone structures. However, longitudinal compression sockets have not been researched for their effects on critical aspects influencing the reliability of myoelectric control. Hence, this study investigates the effect of longitudinal compression on key factors influencing a wearers’ ability to control their myoelectric device. In twelve able-bodied participants, the following three factors were observed: 1) a wearers’ ability to complete a simple on-screen target tracking task whilst wearing a longitudinal compression socket simulator, 2) whether pressure at opposing sides of the socket simulator is maintained during muscle contractions, and 3) whether the longitudinal compression affects the rate at which the forearm fatigues during a short duration, high intensity gripping task. The results from the study showed longitudinal compression of the forearm does not significantly impact a wearers’ ability to complete a simple target-tracking task, or the rate at which the forearm fatigues. However, some benefit to myoelectric control may be achieved due to the maintenance of pressure using this type of socket. Article PDF Link: https://jps.library.utoronto.ca/index.php/cpoj/article/view/37963/29734 How To Cite: Olsen J, Day S, Dupan S, Nazarpour K, Dyson M. Does trans-radial longitudinal compression influence myoelectric control? Canadian Prosthetics & Orthotics Journal. 2022; Volume 5, Issue 2, No.2.https://doi.org/10.33137/cpoj.v5i2.37963 Corresponding Author: Jennifer Olsen,Intelligent Sensing Laboratory, School of Engineering, Newcastle University, UK.E-Mail: j.olsen@newcastle.ac.ukORCID ID: https://orcid.org/0000-0001-9076-3092
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,004 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,006 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».