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Eissa EM, Eldin MM. Odontoidectomy through posterior midline approach followed by same sitting occipitocervical fixation: A cadaveric study. J Craniovertebr Junction Spine. 2017;8(1):58-63doi: 10.4103/0974-8237.199879.
Eissa, E. M., & Eldin, M. M. (2017). Odontoidectomy through posterior midline approach followed by same sitting occipitocervical fixation: A cadaveric study. Journal of craniovertebral junction & spine, 8(1), 58-63. https://doi.org/10.4103/0974-8237.199879
Eissa, Ehab Mohamed, and Eldin, Mohamed Mohi. "Odontoidectomy through posterior midline approach followed by same sitting occipitocervical fixation: A cadaveric study." Journal of craniovertebral junction & spine vol. 8,1 (2017): 58-63. doi: https://doi.org/10.4103/0974-8237.199879
Eissa EM, Eldin MM. Odontoidectomy through posterior midline approach followed by same sitting occipitocervical fixation: A cadaveric study. J Craniovertebr Junction Spine. 2017 Jan-Mar;8(1):58-63. doi: 10.4103/0974-8237.199879. PMID: 28250638; PMCID: PMC5324362.
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J Craniovertebr Junction Spine. 2017 Jan-Mar;8(1):58-63. doi: 10.4103/0974-8237.199879.

Odontoidectomy through posterior midline approach followed by same sitting occipitocervical fixation: A cadaveric study.

Journal of craniovertebral junction & spine

Ehab Mohamed Eissa, Mohamed Mohi Eldin

Affiliations

  1. Department of Neurosurgery, Cairo University, Cairo, Egypt.

PMID: 28250638 PMCID: PMC5324362 DOI: 10.4103/0974-8237.199879

Abstract

OBJECT: Atlantoaxial instability with irreducible odontoid process is one of the challenges in spine surgery. These lesions are commonly treated through anterior transoral approach which is followed by posterior atlantoaxial fusion. However, there are still many limitations, especially cerebrospinal fluid fistula with subsequent life-threatening infection, difficulty in cases with limited opening of mouth due to temporomandibular arthritis or anomalies of naso-oropharynx. Türe

METHODS: In four silicon injected, formalin-fixed cadaver heads, posterior removal of the odontoid was done through the familiar midline incision and subperiosteal muscle separation and elevation of muscles as on unit followed by microscopic exposure and mobilization of the vertebral artery after opening of the foramen transversarium of atlas followed by drilling of lateral mass and odontoidectomy. Occipitocervical stabilization was done between the occiput and C2, C3 (C1 lateral mass screw can be added in the contralateral side for better stabilization).

RESULTS: Unilateral excision of the lateral mass of atlas after mobilization of the vertebral artery provided safe and excellent exposure of the odontoid process in the four cadaver heads without injury to vertebral artery or retraction of the dura.

CONCLUSION: Posterior removal of the odontoid can be done safely through wide and sterile operative field, and occipitocervical fixation performed at the same sitting without need for another operation and hence avoids the risk of cord injury from repositioning.

Keywords: Craniocervical junction; extreme lateral-transatlas approach; removal of the odontoid

Conflict of interest statement

There are no conflicts of interest.

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