ArticleSurgical and radiologic anatomy : SRA2024
An atypical inferior gluteal artery passing through the piriformis muscle.
Article in Surgical and radiologic anatomy : SRA, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Unusual Sciatic Nerve Entrapment by the Inferior Gluteal Artery.Diagnostics (Basel, Switzerland) · 2026Article
- Article
- Piriformis muscle with three bellies and a sacrotuberous-ligament belly: cadaveric case report and belly-count classification proposal.Surgical and radiologic anatomy : SRA · 2025Article
- Variant anatomy of the iliac veins and presence of two venous rings around the arteries in the pelvis.Anatomical science international · 2025Article
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Authors and funding
6 authors.
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Abstract
purposeIn this article, we report a case of an atypical inferior gluteal artery that passed through the piriformis muscle when it emerged from the pelvic cavity in an elderly Japanese female cadaver. We speculate that this atypical artery could be entrapped and compressed by the piriformis muscle and may therefore be associated with piriformis syndrome; however, the anatomical characteristics of such an atypical artery have not been previously reported. To assess this potential association, the atypical inferior gluteal artery was anatomically examined.
methodsThe cadaver examined in this report was a 97-year-old Japanese female who was donated to The Nippon Dental University for use in medical education and research. The atypical inferior gluteal artery and surrounding structures in half of the pelvis were examined macroscopically.
resultsThe atypical inferior gluteal artery arose from the common arterial trunk, formed by itself and the superior gluteal artery, passed through the superior proximal part of the piriformis muscle, and left the pelvic cavity. It supplies branches to the lower half of the gluteus maximus and proximal part of the long head of the biceps femoris muscle. The piriformis muscle originates from the 2nd to 4th sacral vertebrae and attaches to the greater trochanter via a single short tendon.
conclusionAccording to our findings, when the atypical inferior gluteal artery is entrapped and compressed, ischemic signs and symptoms may emerge in the lower buttocks and proximal posterior thigh. These results provide a new perspective for the diagnosis and treatment of piriformis syndrome.
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