J Korean Neurosurg Soc.  2017 Jul;60(4):417-423. 10.3340/jkns.2016.1010.010.

Usefulness of End-to-Side Bridging Anastomosis of Sural Nerve to Tibial Nerve: An Experimental Research

  • 1Department of Neurosurgery, BaÅŸkent University Faculty of Medicine, Adana, Turkey. sonercivi@yahoo.com
  • 2Department of Neurosurgery, Acibadem University Vocational School of Health Services, Ä°stanbul, Turkey.
  • 3Department of Histology and Embryology, Hacettepe University Faculty of Medicine, Ankara, Turkey.
  • 4Department of Neurosurgery, Gazi University Faculty of Medicine, Ankara, Turkey.


Repair of sensorial nerve defect is an important issue on peripheric nerve surgery. The aim of the present study was to determine the effects of sensory-motor nerve bridging on the denervated dermatomal area, in rats with sensory nerve defects, using a neural cell adhesion molecule (NCAM).
We compared the efficacy of end-to-side (ETS) coaptation of the tibial nerve for sural nerve defect repair, in 32 Sprague-Dawley rats. Rats were assigned to 1 of 4 groups: group A was the sham operated group, group B rats had sural nerves sectioned and buried in neighboring muscles, group C experienced nerve sectioning and end-to-end (ETE) anastomosis, and group D had sural nerves sectioned and ETS anastomosis was performed using atibial nerve bridge. Neurological evaluation included the skin pinch test and histological evaluation was performed by assessing NCAM expression in nerve terminals.
Rats in the denervated group yielded negative results for the skin pinch tests, while animals in the surgical intervention groups (group C and D) demonstrated positive results. As predicted, there were no positively stained skin specimens in the denervated group (group B); however, the surgery groups demonstrated significant staining. NCAM expression was also significantly higher in the surgery groups. However, the mean NCAM values were not significantly different between group C and group D.
Previous research indicates that ETE nerve repair is the gold standard for peripheral nerve defect repair. However, ETS repair is an effective alternative method in cases of sensorial nerve defect when ETE repair is not possible.


Nerve bridging; Sensory nerve defect; End-to-side coaptation; Neural cell adhesion molecules

MeSH Terms

Neural Cell Adhesion Molecules
Peripheral Nerves
Rats, Sprague-Dawley
Sural Nerve*
Tibial Nerve*
Neural Cell Adhesion Molecules
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