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Posterior Compression Distraction Reduction （CDR）Technique in the Treatment of BI-AAD

NCT02463630 · Status: UNKNOWN · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 22

Last updated 2015-06-04

No results posted yet for this study

Summary

Posterior compression - distraction reduction technique （CDR） in the treatment of Basilar invagination associated with atlantoaxial dislocation

Conditions

  • Basilar Invagination Associated With Atlantoaxial Dislocation

Interventions

PROCEDURE

Posterior Approach Compression Distraction Reduction

Patients was placed in prone position. Via midline skin incision, expose the occipital squama and spinal process, vertebral plate and facet joints of C2. 2 multi-axial screws were inserted into the bilateral C2 or C3 pedicles. The posterior edge of the FM up to the lower boundary of cerebellar tonsil (width, 3mm) was removed. A compression occipital plate (COP) was fixed to the occipital bone. 2 titanium rods connect C2/C3 screws and plate heads bilaterally. The COP screw cap was screwed in, compress the beginning of the pre-bending formed titanium rod downward, driving the odontoid process forward to restore the horizontal dislocation. After restoration of horizontal dislocation is confirmed, applying distraction force between the occipital screw and the C2 pedicle screws, restore the vertical dislocation. tight up the screw cap. Graft bone was harvested from the posterior inferior iliac crest bone and implanted into posterior end of the foramen magnum and posterior lamina of axis.

Sponsors & Collaborators

  • The Second Hospital of Hebei Medical University

    collaborator OTHER

  • The First Affiliated Hospital of Zhengzhou University

    collaborator OTHER

  • Southern Medical University, China

    collaborator OTHER

  • Xuanwu Hospital, Beijing

    lead OTHER

Principal Investigators

  • Zan Chen, MD · Xuanwu Hospital, Beijing

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
SINGLE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-07-31
Primary Completion
2016-06-30
Completion
2017-06-30

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02463630 on ClinicalTrials.gov