Current Concepts in Upper-Extremity Amputation

Pierrie, Sarah N.; Gaston, R. Glenn; Loeffler, Bryan J.

doi:10.1016/j.jhsa.2018.03.053

Cited by 42 publications

(36 citation statements)

References 44 publications

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“…Consequently, the pattern of surface EMG signals could be altered in an even-spaced electrode setup as in most myoelectric control applications. Such disturbance to the musculature could be less for individuals who have longer residual arm length [57,58]. For instance, a distal third forearm amputation could leave the origin and insertion of the pronator teres and supinator intact, and tenodesis can be used for more distal amputations in which tendons are preserved.…”

Section: Dimensionality Of Hand/wrist Muscle Contraction In Transradimentioning

confidence: 99%

Dimensionality analysis of forearm muscle activation for myoelectric control in transradial amputees

McClanahan

Moench

2020

PLoS ONE

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Establishing a natural communication interface between the user and the terminal device is one of the central challenges of hand neuroprosthetics research. Surface electromyography (EMG) is the most common source of neural signals for interpreting a user’s intent in these interfaces. However, how the capacity of EMG generation is affected by various clinical parameters remains largely unknown. In this study, we examined the EMG activity of forearm muscles recorded from 11 transradially amputated subjects who performed a wide range of movements. EMG recordings from 40 able-bodied subjects were also analyzed to provide comparative benchmarks. By using non-negative matrix factorization, we extracted the synergistic EMG patterns for each subject to estimate the dimensionality of muscle control, under the framework of motor synergies. We found that amputees exhibited less than four synergies (with substantial variability related to the length of remaining limb and age), whereas able-bodied subjects commonly demonstrate five or more synergies. The results of this study provide novel insight into the muscle synergy framework and the design of natural myoelectric control interfaces.

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Section: Dimensionality Of Hand/wrist Muscle Contraction In Transradimentioning

confidence: 99%

Dimensionality analysis of forearm muscle activation for myoelectric control in transradial amputees

McClanahan

Moench

2020

PLoS ONE

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“…Patients who undergo successful replantation report significantly improved outcomes and satisfaction as compared to patients who undergo revision amputation with prosthetic rehabilitation [33] . However, prosthetic technology, including targeted muscle reinnervation, myoelectric prostheses and osseointegration, continues to advance and holds the potential for superior limb dexterity and functionality [33,34] . Limb replantation is currently superior to revision amputation and prosthetic rehabilitation.…”

Section: Replantation Vs Amputation With and Without Prosthetic Fittingmentioning

confidence: 99%

Major upper limb replantation: a review of clinical pearls

Luthringer¹,

Dalena²,

Ayyala³

2020

Plast Aesthet Res

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“…Consequently, the pattern of surface EMG signals could be altered in an even-spaced electrode setup as in most myoelectric control applications. Such disturbance to the musculature could be less for individuals who have longer residual arm length [56], [57]. For instance, a distal third forearm amputation could leave the origin and insertion of the pronator teres and supinator intact, and tenodesis can be used for more distal amputations in which tendons are preserved.…”

Section: Dimensionality Of Hand/wrist Muscle Contraction In Transradimentioning

confidence: 99%

Dimensionality of forearm muscle activation in transradial amputees

McClanahan¹,

Moench²,

Fu³

2020

Preprint

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Background Establishing a natural communication interface between the user and the terminal device is one of the central challenges of hand neuroprosthetics research. Surface electromyography (EMG) is the most common source of neural signals for interpreting a user’s intent in these interfaces. However, how the capacity of EMG generation is affected by various clinical parameters remains largely unknown. Methods In this retrospective study using an open source database, we examined the EMG activity of forearm muscles recorded from 11 transradially amputated subjects and 40 able-bodied subjects who performed a wide range of movements. By using non-negative matrix factorization, we extracted the synergistic EMG patterns for each subject to estimate the dimensionality of muscle control, under the framework of motor synergies. Results We found that amputees exhibited less than four synergies (with substantial variability related to the length of remaining limb and age), whereas able-bodied subjects commonly demonstrate five or more synergies. Conclusions The results of this study provide novel insight into the muscle synergy framework and the design of natural myoelectric control interfaces.

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Current Concepts in Upper-Extremity Amputation

Cited by 42 publications

References 44 publications

Dimensionality analysis of forearm muscle activation for myoelectric control in transradial amputees

Dimensionality analysis of forearm muscle activation for myoelectric control in transradial amputees

Major upper limb replantation: a review of clinical pearls

Dimensionality of forearm muscle activation in transradial amputees

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