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Rivista di Neurochirurgia

Indexed/Abstracted in: e-psyche, EMBASE, PubMed/MEDLINE, Neuroscience Citation Index, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,651

Periodicità: Bimestrale

ISSN 0390-5616

Online ISSN 1827-1855


Journal of Neurosurgical Sciences 2006 Giugno;50(2):33-40


Anatomical and functional connectivity of the transected ulnar nerve after accessory nerve neurotization in the cat

Isla A., Martinez J. R., Perez Lopez C., Pérez Conde C., Morales C., Avendaño C.

Departments of Neurosurgery and Plastic Surgery La Paz University Hospital Autónoma University, Madrid, Spain

Aim. The objective of this experimental study was to test the capacity of accessory nerve motoneurons to innervate muscles of the ulnar nerve territory after direct anastomosis.
Methods. This study used 22 cats in two groups: experimental group (15 cats) and control group (7 cats). The first one was followed during twelve months using electromyographic records every two months postsurgery; muscle and nerve histological assessment and counting horseradish peroxidase-labeled motoneurons.
Results. Our results showed that reinnervation was achieved in 12/15 nerves. The number of HRP labelled medullar motoneurons after anastomosis showed a significant statistic difference with a simple ulnar nerve transection; there was no significant statistic difference in labelling between the group with an anastomosis and the one with a simple accessory nerve transection.
Conclusion. Direct anastomosis between the spinal accessory nerve and the ulnar nerve is achievable and thus, the accessory spinal nerve is another possible choice for correcting the motor deficit arising from lower brachial plexus avulsion, but the limited number of motoneurons would only allow partial reinnervation.

lingua: Inglese


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