Phrenic to musculocutaneous nerve transfer for traumatic brachial plexus injuries: analyzing respiratory effects on elbow flexion control

Journal of Neurosurgery
Mariano SocolovskyAna Lovaglio

Abstract

In this study, the authors sought to identify the relationship between breathing and elbow flexion in patients with a traumatic brachial plexus injury (TBPI) who undergo a phrenic nerve (PN) transfer to restore biceps flexion. More specifically, the authors studied whether biceps strength and the maximal range of active elbow flexion differ between full inspiration and expiration, and whether electromyography (EMG) activity in the biceps differs between forced maximum breathing during muscular rest, normal breathing during rest, and at maximal biceps contraction. All these variables were studied in a cohort with different intervals of follow-up, as the authors sought to determine if the relationship between breathing movements and elbow flexion changes over time. The British Medical Research Council muscle-strength grading system and a dynamometer were used to measure biceps strength, which was measured 1) during a maximal inspiratory effort, 2) during respiratory repose, and 3) after a maximal expiratory effort. The maximum range of elbow flexion was measured 1) after maximal inspiration, 2) during normal breathing, and 3) after maximal expiration. Postoperative EMG testing was performed 1) during normal breathing with the arm...Continue Reading

References

Jan 1, 1994·Muscle & Nerve·T R Swift
Jan 1, 1993·Clinical Neurology and Neurosurgery·M J MalessyR T Thomeer
Oct 22, 2008·Hand Clinics·Dimitri J AnastakisDavid Mikulis
Jul 14, 2010·The Journal of Hand Surgery·Mou-Xiong ZhengYu-Dong Gu
Dec 25, 2015·The Lancet. Respiratory Medicine·Geraint B Rogers, Steve Wesselingh
Aug 21, 2016·Respiratory Physiology & Neurobiology·Jolene M InchegluLuciane H Gargaglioni

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Citations

Jun 20, 2020·Acta neurochirurgica·Mariano SocolovskyGilda di Masi
Jan 20, 2021·Annals of Neurology·Alex RebelloKarthik Vinay Mahesh
Mar 23, 2021·PM & R : the Journal of Injury, Function, and Rehabilitation·Meghan K McGillivrayMichael J Berger

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