Anetai H, Tokita K, Sakamoto M, Midorikawa-Anetai S, Kojima R
Department of Anatomy and Life Structure, School of Medicine, Juntendo University, Tokyo, Japan.
School of Physical Therapy, Faculty of Health and Medical Care, Saitama Medical University, Saitama, Japan.
Folia Morphol (Warsz). 2021;80(3):549-556. doi: 10.5603/FM.a2020.0083. Epub 2020 Aug 4.
It is critical for surgeons to have a full understanding of the complex courses and ramifications of the human internal iliac artery and its parietal branches. Although numerous anatomical studies have been performed, not all variations at this site are currently understood. Therefore, we characterised these blood vessels in foetal pigs to provide additional insight from a comparative anatomical perspective.
Eighteen half-pelvis specimens from foetal pigs were dissected and examined on macroscopic scale.
Among our findings, we identified the internal iliac artery as a descending branch of the abdominal aorta. A very thick umbilical artery arose from the internal iliac artery. The superior gluteal, inferior gluteal, and internal pudendal arteries formed the common arterial trunk. Although the superior gluteal artery emerged from the common trunk from inside the pelvis, the inferior gluteal and internal pudendal arteries bifurcated at deep layer within the gluteus muscles after leaving pelvic cavity. We were unable to detect an typical obturator artery emerging from the internal iliac artery. A branch supplying the hip adductors was identified as arising from the inferior epigastric artery which itself was derived from the distal end of the external iliac artery.
We identified the anatomic characteristics of the internal iliac artery and its parietal branches in the foetal pig. Our findings provide new insight into the comparative anatomy of the internal iliac artery and will promote understanding of related morphogenetic processes.
外科医生全面了解人类髂内动脉及其壁支的复杂走行和分支情况至关重要。尽管已经进行了大量的解剖学研究，但目前并非所有该部位的变异都已被了解。因此，我们对胎猪的这些血管进行了特征描述，以便从比较解剖学的角度提供更多见解。
解剖并宏观检查了18个胎猪半骨盆标本。
在我们的研究结果中，我们将髂内动脉确定为腹主动脉的下行分支。一条非常粗大的脐动脉发自髂内动脉。臀上动脉、臀下动脉和阴部内动脉形成共同动脉干。尽管臀上动脉从盆腔内的共同动脉干发出，但臀下动脉和阴部内动脉在离开盆腔后在臀肌深层分叉。我们未能检测到发自髂内动脉的典型闭孔动脉。一条供应髋内收肌的分支被确定为发自腹壁下动脉，而腹壁下动脉本身则源自髂外动脉远端。
我们确定了胎猪髂内动脉及其壁支的解剖特征。我们的研究结果为髂内动脉的比较解剖学提供了新的见解，并将促进对相关形态发生过程的理解。
