Contralateral C7 nerve root transfer in pediatric brachial plexus injury with complete root avulsion
DOI:
https://doi.org/10.59156/pybva867Keywords:
Brachial plexus, Contralateral C7, Root avulsion, Technical noteAbstract
Background: complete brachial plexus injuries are among the most severe forms of peripheral nerve injury, with a significant impact on function and quality of life. In these cases, the availability of donor nerves is limited. Transfer of the contralateral C7 nerve root represents a reconstructive alternative due to its high axonal contribution, although this technique had not been previously reported in the regional literature.
Objectives: to describe the technique of transferring the contralateral C7 nerve root using a retrosternocleidomastoid approach and a double sural nerve autograft.
Technique description: in a 2-year-old patient with a complete traumatic avulsion of the C5-T1 nerve roots, bilateral dissection of the brachial plexuses was performed using supraclavicular approaches. The contralateral C7 nerve root was transferred to the anterior division of the inferior primary trunk on the affected side using a double sural nerve autograft tunneled via a retrosternocleidomastoid approach.
Conclusion: transfer of the contralateral C7 root via a retrosternocleidomastoid approach and double sural autograft constitutes a feasible and safe technique for the reconstruction of complete brachial plexus injuries, representing the first report of this surgical strategy in our country.
Downloads
References
1. Kaiser R, Waldauf P, Ullas G, Krajcová A. Epidemiology, etiology, and types of severe adult brachial plexus injuries requiring surgical repair: systematic review and meta-analysis. Neurosurg Rev. 2020;43:443-52. Doi: 10.1007/s10143-018-1009-2 DOI: https://doi.org/10.1007/s10143-018-1009-2
2. Berman JS, Birch R, Anand P. Pain following human brachial plexus injury with spinal cord root avulsion and the effect of surgery. Pain. 1998;75:199-207. Doi: 10.1016/S0304-3959(97)00220-0 DOI: https://doi.org/10.1016/S0304-3959(97)00220-0
3. Gu YD, Zhang GM, Chen DS, y col. Seventh cervical nerve root transfer from the contralateral healthy side for treatment of brachial plexus root avulsion. J Hand Surg Br. 1992;17:518-21. Doi: 10.1016/S0266-7681(05)80235-9 DOI: https://doi.org/10.1016/S0266-7681(05)80235-9
4. Wang S, Li P, Xue Y, y col. Contralateral C7 nerve transfer with direct coaptation to restore lower trunk function after traumatic brachial plexus avulsion. J Bone Joint Surg Am. 2013;95:821-7. Doi: 10.2106/JBJS.L.00039 DOI: https://doi.org/10.2106/JBJS.L.00039
5. Narakas AO, Hentz VR. Neurotization in brachial plexus injuries. Indication and results. Clin Orthop Relat Res. 1988;43-56. DOI: https://doi.org/10.1097/00003086-198812000-00008
6. Gilbert A, Pivato G, Kheiralla T. Long-term results of primary repair of brachial plexus lesions in children. Microsurgery. 2006;26:334-42. Doi: 10.1002/micr.20248 DOI: https://doi.org/10.1002/micr.20248
7. Liu Y, Yang X, Gao K, y col. Outcome of contralateral C7 transfers to different recipient nerves after global brachial plexus avulsion. Brain Behav. 2018;8. Doi: 10.1002/brb3.1174 DOI: https://doi.org/10.1002/brb3.1174
8. Gu YD. Functional motor innervation of brachial plexus roots. J Hand Surg Br. 1997;22:258-60. Doi: 10.1016/S0266-7681(97)80076-9 DOI: https://doi.org/10.1016/S0266-7681(97)80076-9
9. Wang GB, Yu AP, Ng CY, y col. Contralateral C7 to C7 nerve root transfer in reconstruction for treatment of total brachial plexus palsy: anatomical basis and preliminary clinical results. J Neurosurg Spine. 2018;29:491-9. Doi: 10.3171/2018.3.SPINE171251 DOI: https://doi.org/10.3171/2018.3.SPINE171251
10. Gu YD, Shen LY. Electrophysiological changes after severance of the C7 nerve root. J Hand Surg Br. 1994;19:69-71. Doi: 10.1016/0266-7681(94)90053-1 DOI: https://doi.org/10.1016/0266-7681(94)90053-1
11. Li R, Machol JA, Liu X, y col. C7 nerve root sensory distribution in peripheral nerves: BOLD functional magnetic resonance imaging investigation at 9.4 T. Muscle Nerve. 2014;49:40-6. Doi: 10.1002/mus.23864 DOI: https://doi.org/10.1002/mus.23864
12. Zuo CT, Hua XY, Guan YH, y col. Long-range plasticity between intact hemispheres after contralateral cervical nerve transfer in humans. J Neurosurg. 2010;113:133-40. Doi: 10.3171/2010.1.JNS09448 DOI: https://doi.org/10.3171/2010.1.JNS09448
13. Socolovsky M, Barillaro K, Bonilla G, y col. Nerve transfers for brachial plexus injuries: grading of volitional control. J Neurosurg. 2022;1-7. Doi: 10.3171/2022.7.JNS22887 DOI: https://doi.org/10.3171/2022.7.JNS22887
14. Socolovsky M, Malessy M. Brain changes after peripheral nerve repair: limitations of neuroplasticity. J Neurosurg Sci. 2021;65:421-30. Doi: 10.23736/S0390-5616.21.05298-X DOI: https://doi.org/10.23736/S0390-5616.21.05298-X
15. Socolovsky M, di Masi G, Bonilla G, y col. Brain plasticity in neonatal brachial plexus palsies: quantification and comparison with adults' brachial plexus injuries. Childs Nerv Syst. 2023. Doi: 10.1007/s00381-023-06072-2 DOI: https://doi.org/10.21203/rs.3.rs-3106823/v1