Expiratory activity in transferred intercostal nerves in brachial plexus injury patients

Involuntary activity of transferred intercostal motor units was examined in patients with brachial plexus injury. Since the internal intercostal nerves were detached from the thorax to reinnervate the musculus biceps brachii, it was possible to record pure intercostal motor activity in humans. Respiratory activity was seen in the latter part of the expiratory phase, thus dividing the phase into two substages (E1 and E2) by the onset of the activity. CO2 rebreathing prolonged the duration of the intercostal motor activity and increased the tidal activity as determined from the integration curve. There was a close linear correlation between these two variables. These observations indicate that expiratory activity and its duration are actively controlled in humans.

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Reconstruction of tonic vibration reflex in the biceps brachii reinnervated by transferred intercostal nerves in patients with brachial plexus injury

Neuroscience Letters ◽

10.1016/0304-3940(96)12411-3 ◽

1996 ◽

Vol 206 (1) ◽

pp. 1-4 ◽

Cited By ~ 6

Author(s):

Kousei Sai ◽

Arata Kanamaru ◽

Masato Sibuya ◽

Ikuo Homma ◽

Tetsuya Hara

Keyword(s):

Brachial Plexus ◽

Brachial Plexus Injury ◽

Biceps Brachii ◽

Tonic Vibration Reflex ◽

Intercostal Nerves

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Neural Patterns Associated with Ventilatory Movements in Dragonfly Larvae

Journal of Experimental Biology ◽

10.1242/jeb.52.1.167 ◽

1970 ◽

Vol 52 (1) ◽

pp. 167-175

Author(s):

P. J. MILL

Keyword(s):

Control System ◽

Motor Activity ◽

Action Potentials ◽

Motor Units ◽

The Other ◽

Ventilatory Control ◽

Expiratory Phase ◽

Segmental Nerve ◽

Ventral Muscle ◽

Stimulation Of

1. Rhythmic bursts of motor activity associated with the expiratory phase of ventilation have been recorded from the second lateral segmental nerves of posterior abdominal ganglia in Aeshna and Anax larvae. 2. In Aeshna the rhythmic expiratory bursts contain one, or sometimes two, motor units; whereas in Anax there are almost invariably three units. In both animals only one unit is associated with action potentials in the respiratory dorso-ventral muscle. 3. Motor activity synchronized with the expiratory bursts in the second nerves has been recorded from the other lateral nerves and from the last unpaired nerve. In addition the fifth lateral nerves carry inspiratory bursts. 4. It has been confirmed that stimulation of a first segmental nerve can re-set the ventilatory rhythm by initiating an expiratory burst in the second nerves. The original frequency is immediately resumed on cessation of stimulation. 5. The nature of the ventilatory control system in dragonfly larvae is discussed in relation to other rhythmic systems in the arthropods.

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A histochemical study of the biceps brachii muscle cross-innervated by intercostal nerves:6 cases of brachial plexus injuries operated with nerve-crossing

Acta Orthopaedica Scandinavica ◽

10.3109/17453679408995435 ◽

1994 ◽

Vol 65 (2) ◽

pp. 204-206 ◽

Cited By ~ 5

Author(s):

Hideo Kawai ◽

Tsuyoshi Murase ◽

Hidehiko Kawabata ◽

Ichiro Ohta ◽

Takashi Masatomi ◽

...

Keyword(s):

Brachial Plexus ◽

Biceps Brachii ◽

Histochemical Study ◽

Biceps Brachii Muscle ◽

Intercostal Nerves

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Acute repair of traumatic pan–brachial plexus injury: technical considerations and approaches

Neurosurgical FOCUS ◽

10.3171/2018.1.focusvid.17569 ◽

2018 ◽

Vol 44 (videosuppl1) ◽

pp. V4 ◽

Cited By ~ 3

Author(s):

Hussam Abou-Al-Shaar ◽

Michael Karsy ◽

Vijay Ravindra ◽

Evan Joyce ◽

Mark A. Mahan

Keyword(s):

Electrical Stimulation ◽

Brachial Plexus ◽

Brachial Plexus Injury ◽

Hand Function ◽

Nerve Transfer ◽

Elbow Flexion ◽

Brachial Plexus Avulsion ◽

Intercostal Nerves ◽

Technical Considerations ◽

Stimulation Of

Particularly challenging after complete brachial plexus avulsion is reestablishing effective hand function, due to limited neurological donors to reanimate the arm. Acute repair of avulsion injuries may enable reinnervation strategies for achieving hand function. This patient presented with pan–brachial plexus injury. Given its irreparable nature, the authors recommended multistage reconstruction, including contralateral C-7 transfer for hand function, multiple intercostal nerves for shoulder/triceps function, shoulder fusion, and spinal accessory nerve–to–musculocutaneous nerve transfer for elbow flexion. The video demonstrates distal contraction from electrical stimulation of the avulsed roots. Single neurorrhaphy of the contralateral C-7 transfer was performed along with a retrosternocleidomastoid approach.The video can be found here: https://youtu.be/GMPfno8sK0U.

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