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Related Concept Videos

Spinal Nerves: Plexus I01:22

Spinal Nerves: Plexus I

693
Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
693

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Related Experiment Video

Updated: May 24, 2025

Surface Electromyographic Biofeedback as a Rehabilitation Tool for Patients with Global Brachial Plexus Injury Receiving Bionic Reconstruction
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Enhanced Functionality Using a Powered Upper Extremity Exoskeleton in Patients With Brachial Plexus Injuries.

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    Summary
    This summary is machine-generated.

    A novel powered myoelectric elbow orthosis (PMEO) significantly improved elbow range of motion and enabled weight lifting for individuals with traumatic brachial plexus injury (BPI). This device enhances daily living functionality for patients with significant upper extremity disability.

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    Area of Science:

    • Biomedical Engineering
    • Rehabilitation Technology
    • Neuroscience

    Background:

    • Traumatic brachial plexus injury (BPI) causes significant upper extremity disability, impacting daily activities.
    • Muscle strength recovery post-surgery can exceed two years for many BPI patients.
    • Existing assistive devices may not fully restore functionality for activities of daily living (ADLs).

    Purpose of the Study:

    • To evaluate the efficacy of a novel powered myoelectric elbow orthosis (PMEO) in enhancing ADL function for individuals with BPI.
    • To assess the impact of the PMEO on elbow range of motion, lifting capacity, and compensatory movements.
    • To gather user feedback on the PMEO's usability, including fit and form.

    Main Methods:

    • A cohort of BPI patients was divided into more impaired (MMT < 3) and less impaired (MMT ≤ 3) groups.
    • Subjects performed ADLs, including lifting tasks, with and without the PMEO.
    • Data collected included upper extremity kinematics, electromyography, weight lifted, and subjective user feedback.

    Main Results:

    • The PMEO significantly improved elbow range of motion in the more impaired group (14 ± 23 degrees, p = 0.019).
    • More impaired subjects successfully lifted an average of 1.1 ± 0.6 kg using the PMEO, a task not possible without it (p = 0.011).
    • No significant compensatory shoulder or trunk movements were observed; users found the device comfortable and easy to don/doff.

    Conclusions:

    • The powered myoelectric elbow orthosis (PMEO) is a viable assistive device for improving ADL function in BPI patients.
    • The PMEO effectively enhances elbow mobility and lifting capacity, particularly for individuals with severe BPI.
    • The device demonstrates good user acceptance and usability, offering a promising solution for functional restoration.