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The piriformis muscle and its relationship to the autonomics of the pelvis : a single bilateral case

journal contribution
posted on 06.12.2017, 00:00 by N Smoll, Phillip Ebrall
Objective: To report the first known finding of a variation in the medial attachments of the piriformis muscle that affects its relationship to autonomic grey rami communicantes. Method: Cadaveric dissection for continuing general educational development. Results: An incidental finding was a single case of anomolous attachment of the medial fibres of the piriformis muscle bilaterally such that the fibres arose medial to the ventral sacral foramina. This resulted in the muscle being pierced by sacral sympathetic gray rami that contribute to the autonomic nervous system within the pelvis. Conclusion: Anomalous attachment of the medial fibres of the piriformis can occur with the anatomical result being the piercing of skeletal muscle by branches within the autonomic nervous system. A speculative question is whether this anatomical finding may allow for an autonomic piriformis syndrome analogous to the musculoskeletal pirifomis syndrome.

History

Volume

40

Issue

2

Start Page

86

End Page

87

Number of Pages

2

eISSN

2200-8020

ISSN

1036-0913

Location

Australia

Publisher

Chiropractors' Association of Australia

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Institute for Health and Social Science Research (IHSSR); International Medical University; Monash University;

Era Eligible

Yes

Journal

Chiropractic journal of Australia.