A Novel Approach to Atlanto-Occipital (AO) Joint Injection: A Cadaveric Study.

Authors

Agnes Stogicza, Hala Elhamory, Krisztina Danics, Philip Peng

Published in

Pain practice : the official journal of World Institute of Pain. Volume 26. Issue 8. Pages e70201.

Abstract

Atlanto-occipital (AO) joint instability and arthrosis are significant contributors to cervicogenic headaches and related disability. Injection and radiofrequency treatment of the AO joint are innovative approaches. However, the literature providing guidance on safe access to these joints remains sparse. The AO joint presents a high-risk target for interventions due to its proximity to the vertebral artery (VA), potentially compromising vascular supply to the cord, brainstem, cerebellum, and occipital lobe.
We describe the technical details of a novel fluoroscopy-guided AO joint injection and evaluate the safety using a cadaveric model.
Cadaveric study.
Department of Pathology, Forensic and Insurance Medicine, Semmelweis University, Faculty of Medicine.
Ten AO joints from five prone cadavers were targeted for injection. A far posterolateral needle entry targeting the anterolateral aspect of the AO joint was employed, guided by fluoroscopy. Intra-articular spread was confirmed with contrast medium. Subsequent dissections were conducted to examine the relationship between the VA and the needle trajectory and position to assess safety.
All needles were accurately placed within the AO joints and avoided the VA and adjacent critical structures, confirming the anatomical feasibility of the technique.
The small sample size may not reflect the diversity of live patient anatomy. Additionally, the use of cadavers precludes assessment of physiological responses to injections, potentially limiting the direct applicability of findings to live patients.
This study describes a reproducible fluoroscopy-guided approach to the AO joint. Targeting the anterolateral aspect of the joint allowed accurate needle placement while maintaining separation from the VA and other critical structures in this cadaveric model, supporting further clinical evaluation of the technique.

PMID:
42855895
Bibliographic data and abstract were imported from PubMed on 10 Oct 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.