AI Article Synopsis
- - This study examined co-contraction in elbow flexor muscles of 12 patients who had a brachial plexus injury and received a nerve transfer to regain elbow flexion.
- - Researchers used surface electromyography (EMG) to measure co-contraction during various muscle contractions and found that reinnervated muscles showed higher co-contraction ratios compared to uninjured muscles.
- - The findings indicate that increased co-contraction in reinnervated muscles is linked to earlier fatigue, suggesting that including co-contraction measurements could enhance assessments and treatments for muscle recovery.
Article Abstract
To investigate co-contraction in reinnervated elbow flexor muscles following a nerve transfer. 12 brachial plexus injury patients who received a nerve transfer to reanimate elbow flexion were included in this study. Surface electromyography (EMG) recordings were used to quantify co-contraction during sustained and repeated isometric contractions of reinnervated and contralateral uninjured elbow flexor muscles. For the first time, this study reveals reinnervated muscles demonstrated a trend toward higher co-contraction ratios when compared with uninjured muscle and this is correlated with an earlier onset of muscle fatigability. Measurements of co-contraction should be considered within muscular function assessments to help drive improvements in motor recovery therapies.
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| http://dx.doi.org/10.2217/rme-2023-0049 | DOI Listing |
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Article Synopsis
- - This study examined co-contraction in elbow flexor muscles of 12 patients who had a brachial plexus injury and received a nerve transfer to regain elbow flexion.
- - Researchers used surface electromyography (EMG) to measure co-contraction during various muscle contractions and found that reinnervated muscles showed higher co-contraction ratios compared to uninjured muscles.
- - The findings indicate that increased co-contraction in reinnervated muscles is linked to earlier fatigue, suggesting that including co-contraction measurements could enhance assessments and treatments for muscle recovery.
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