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Progressive basilar invagination after transoral odontoidectomy: treatment by atlantoaxial facet distraction and craniovertebral realignment.
Spine (Phila Pa 1976). 2005 Sep 15; 30(18):E551-5.S

Abstract

STUDY DESIGN

The issue of progression of congenital basilar invagination is evaluated on the basis of 3 clinical cases. The rationale of treatment of basilar invagination in general and, particularly, in the complex clinical situation encountered in the presented cases, by the authors' technique of atlantoaxial joint distraction, reduction of basilar invagination, and direct lateral mass plate and screw fixation is discussed.

OBJECTIVE

The subject of progression of congenital basilar invagination and recurrent craniocervical cord compression after an initial transoral decompression is analyzed, and an alternative surgical treatment involving craniovertebral bone realignment is suggested.

SUMMARY OF BACKGROUND DATA

This is a review of 3 cases of basilar invagination treated earlier by transoral decompression. No fixation procedure was performed. The patients presented with recurrent symptoms of high cervical cord compression. Investigations revealed a progression of basilar invagination and cord compression. The treatment of such a complex clinical situation by atlantoaxial joint distraction is discussed.

METHODS

Between September 2001 and January 2004, we treated 3 patients with congenital basilar invagination who underwent transoral odontoidectomy but did not undergo any posterior atlantoaxial or occipitoaxial fixation. The patients had postoperative improvement but worsening of their neurologic condition after an average duration of 26 months after transoral surgery. Repeat investigations revealed that basilar invagination and the craniovertebral alignments worsened during the period, and there was recurrent cervicomedullary cord compression. These patients were treated by atlantoaxial facet distraction, and attempts were made toward reduction of the basilar invagination and craniovertebral junction bony realignment, and atlantoaxial fixation by the technique recently described by us.

RESULTS

During the average follow-up of 25 months, all 3 patients have had a neurologic recovery.

CONCLUSIONS

The probable cause of basilar invagination and its progression is a congenital malformation ofalignment of the facets of the atlantoaxial joint. Distraction of the facets and direct interarticular atlantoaxial fixation presents a unique opportunity of reduction of the basilar invagination and fixation of the region.

Authors+Show Affiliations

Department of Neurosurgery, King Edward Memorial Hospital, Seth G. S. Medical College, Mumbai, India. atulgoel62@hotmail.com

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16166884

Citation

Goel, Atul. "Progressive Basilar Invagination After Transoral Odontoidectomy: Treatment By Atlantoaxial Facet Distraction and Craniovertebral Realignment." Spine, vol. 30, no. 18, 2005, pp. E551-5.
Goel A. Progressive basilar invagination after transoral odontoidectomy: treatment by atlantoaxial facet distraction and craniovertebral realignment. Spine (Phila Pa 1976). 2005;30(18):E551-5.
Goel, A. (2005). Progressive basilar invagination after transoral odontoidectomy: treatment by atlantoaxial facet distraction and craniovertebral realignment. Spine, 30(18), E551-5.
Goel A. Progressive Basilar Invagination After Transoral Odontoidectomy: Treatment By Atlantoaxial Facet Distraction and Craniovertebral Realignment. Spine (Phila Pa 1976). 2005 Sep 15;30(18):E551-5. PubMed PMID: 16166884.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Progressive basilar invagination after transoral odontoidectomy: treatment by atlantoaxial facet distraction and craniovertebral realignment. A1 - Goel,Atul, PY - 2005/9/17/pubmed PY - 2006/3/10/medline PY - 2005/9/17/entrez SP - E551 EP - 5 JF - Spine JO - Spine (Phila Pa 1976) VL - 30 IS - 18 N2 - STUDY DESIGN: The issue of progression of congenital basilar invagination is evaluated on the basis of 3 clinical cases. The rationale of treatment of basilar invagination in general and, particularly, in the complex clinical situation encountered in the presented cases, by the authors' technique of atlantoaxial joint distraction, reduction of basilar invagination, and direct lateral mass plate and screw fixation is discussed. OBJECTIVE: The subject of progression of congenital basilar invagination and recurrent craniocervical cord compression after an initial transoral decompression is analyzed, and an alternative surgical treatment involving craniovertebral bone realignment is suggested. SUMMARY OF BACKGROUND DATA: This is a review of 3 cases of basilar invagination treated earlier by transoral decompression. No fixation procedure was performed. The patients presented with recurrent symptoms of high cervical cord compression. Investigations revealed a progression of basilar invagination and cord compression. The treatment of such a complex clinical situation by atlantoaxial joint distraction is discussed. METHODS: Between September 2001 and January 2004, we treated 3 patients with congenital basilar invagination who underwent transoral odontoidectomy but did not undergo any posterior atlantoaxial or occipitoaxial fixation. The patients had postoperative improvement but worsening of their neurologic condition after an average duration of 26 months after transoral surgery. Repeat investigations revealed that basilar invagination and the craniovertebral alignments worsened during the period, and there was recurrent cervicomedullary cord compression. These patients were treated by atlantoaxial facet distraction, and attempts were made toward reduction of the basilar invagination and craniovertebral junction bony realignment, and atlantoaxial fixation by the technique recently described by us. RESULTS: During the average follow-up of 25 months, all 3 patients have had a neurologic recovery. CONCLUSIONS: The probable cause of basilar invagination and its progression is a congenital malformation ofalignment of the facets of the atlantoaxial joint. Distraction of the facets and direct interarticular atlantoaxial fixation presents a unique opportunity of reduction of the basilar invagination and fixation of the region. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/16166884/Progressive_basilar_invagination_after_transoral_odontoidectomy:_treatment_by_atlantoaxial_facet_distraction_and_craniovertebral_realignment_ L2 - https://doi.org/10.1097/01.brs.0000179414.64741.7b DB - PRIME DP - Unbound Medicine ER -