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  • By Author: Cohen-Gadol, Aaron A. x
  • By Author: Tubbs, R. Shane x
  • By Author: Oakes, W. Jerry x
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R. Shane Tubbs, Mitchel Muhleman, Samuel G. McClugage, Marios Loukas, Joseph H. Miller, Joshua J. Chern, Curtis J. Rozzelle, W. Jerry Oakes and Aaron A. Cohen-Gadol

Cysts of the choroidal fissure are often incidentally identified. Symptoms from such cysts appear to be exceedingly rare. Herein, the authors report a case series of symptomatic enlargement of choroidal fissure cysts that were surgically treated. Although cysts of the choroidal fissure do not normally become symptomatic, the neurosurgeon should be aware of such a complication. Based on the authors' experience, surgical fenestration of such cysts has good long-term results.

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R. Shane Tubbs, Marios Loukas, Mohammadali M. Shoja, Ghaffar Shokouhi, John C. Wellons III, W. Jerry Oakes and Aaron A. Cohen-Gadol

Object

Various donor nerves, including the ipsilateral long thoracic nerve (LTN), have been used for brachial plexus neurotization procedures. Neurotization to proximal branches of the brachial plexus using the contralateral long thoracic nerve (LTN) has, to the authors' knowledge, not been previously explored.

Methods

In an attempt to identify an additional nerve donor candidate for proximal brachial plexus neurotization, the authors dissected the LTN in 8 adult human cadavers. The nerve was transected at its distal termination and then passed deep to the clavicle and axillary neurovascular bundle. This passed segment of nerve was then tunneled subcutaneously and contralaterally across the neck to a supra- and infraclavicular exposure of the suprascapular and musculocutaneous nerves. Measurements were made of the length and diameter of the LTN.

Results

All specimens were found to have a LTN that could be brought to the aforementioned contralateral nerves. Neural connections remained tension free with left and right neck rotation of ~ 45°. The mean length of the LTN was 22 cm with a range of 18–27 cm. The overall mean diameter of this nerve was 3.0 mm. No gross evidence of injury to surrounding neurovascular structures was identified in any specimen.

Conclusions

Based on the results of this cadaveric study, the use of the contralateral LTN may be considered for neurotization of the proximal musculocutaneous and suprascapular nerves.