# High Prevalence of Arterial and Venous Corona Mortis Variants in Cadaveric Dissection

## TL;DR

This study found that the corona mortis, a vascular variant in the pelvis, is more common in the Mexican population than previously known.

## Contribution

The study reports the first prevalence data of arterial and venous corona mortis variants in the Mexican population.

## Key findings

- Arterial corona mortis variants were present in 70.4% of hemipelves.
- Venous corona mortis variants were present in 89.9% of hemipelves.
- The overall prevalence of corona mortis was 48%, higher than previously reported 36%.

## Abstract

Background: The arterial or venous corona mortis (CM) is an anatomical vascular variant found in the retropubic area. It is an anastomosis between the external iliac system and the obturator vessels. This study focuses on morphometric analysis and the establishment of the prevalence of arterial and venous CM in the Mexican population.

Methodology: A total of 108 hemipelves from human cadavers embalmed with a propylene-glycol solution were analyzed using a suprapubic approach. The abdominal viscera were mobilized to locate the common iliac arteries and veins, which were perfused with red latex for arteries and blue for veins. The vessels of the internal iliac system were identified and dissected, and their morphological characteristics, pattern of variation, and laterality were examined. Measurements included caliber, length, and distance between the CM and the pubic symphysis, using an electronic Vernier caliper for all measurements. Each measurement was performed in triplicate and is presented as mean ± standard error.

Results: Of the studied hemipelves, 14 were female, and 94 were male. A morphometric analysis was performed, where we found that 32 (29.6%) of the hemipelves did not present any arterial variants and only 11 (10.1%) did not show a venous variant. Accordingly, this study found a prevalence of 76 (70.4%) for arterial variants and 97 (89.9%) for venous variants.

Conclusions: The frequency of CM had not been reported in the Mexican population; however, we found a higher prevalence (48%) of CM than previously reported (36%).