NCT05849363

A Prospective Study of Surgical Treatment Strategies for Goal B Type Basilar Invagination

A Prospective Study of Surgical Treatment Strategies for Goal B Type Basilar Invagination in China

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 200 (estimated)
• Sponsor: Xuanwu Hospital, Beijing · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

The etiology of Goal B type basilar invagination (BI) is still not clear, and it may be related to platybasia and short slope. There is no unified standard surgical strategy for Goal B type BI, and different surgical strategies have a great influence on the surgical results of patients. The purpose of our prospective study in China is to (1) further clarify the etiology of Goal B type BI, and (2) improve the surgical outcome in these patients.

Conditions

• Basilar Invagination
• Prospective Study
• Surgical Outcome

Interventions

Type	Name	Description
PROCEDURE	Posterior fossa decompression	Posterior fossa decompression：Posterior arch of atlas removal, decompression of cerebellum, detection of foramen magnum.
PROCEDURE	Posterior Compression-Distraction-Reduction-Fixation	Posterior Compression-Distraction-Reduction-Fixation：After subperiosteal dissection, the facet joint was exposed. A 2-mm joint "scraper" with sharp edge was inserted into the joint capsule and rotated to remove the articular cartilage. A blunt-edged rotating distractor was then inserted into the joint space, and the facet was sequentially opened with larger and larger blunt rotating distractors. After distraction on one side, an appropriate-sized trial was placed into the contralateral facet, holding the distraction open. This was repeated back and forth with larger trials. These steps were repeated, and the facet joints were distracted up to the pre-planned distance of the odontoid tip above Chamberlain's line.

Timeline

• Start date: 2023-06-01
• Primary completion: 2025-06-01
• Completion: 2025-09-01
• First posted: 2023-05-08
• Last updated: 2023-07-19

Locations

1 site across 1 country: China