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Corona mortis anastomosis: a three-dimensional computerized tomographic angiographic study
Ely L Steinberg1, Tomer Ben-Tov2, Galit Aviram3
1Orthopaedic Division, Tel-Aviv Medical Center, Tel-Aviv University, 6423906, Tel-Aviv, Israel. steinberge@tlvmc.gov.il.
Insights
The corona mortis (CM) anatomy, or vascular connection between the obturator artery and femoral artery, is present in one-third of individuals. This vascular anatomy is more lateral in females and absent in smaller pelvises.
Area of Science:
- Anatomy
- Vascular Surgery
- Radiology
Background:
- The corona mortis (CM) is an important vascular structure in the pelvic region.
- Understanding its anatomy is crucial for surgical procedures and emergency interventions.
Purpose of the Study:
- To evaluate the anatomy of the corona mortis (CM) using three-dimensional computerized tomography angiography (CTA).
Main Methods:
- 100 patients (66 males, 34 females; average age 67.8 years) underwent CTA.
- Parameters assessed included anastomosis incidence, artery diameter, distance from the symphysis pubis, and pelvic size.
Main Results:
- 66 (33%) arterial anastomoses were found in 200 arteries.
- Average diameters were 2.4 mm (right) and 2.24 mm (left).
- CMs were more lateral in females and absent in smaller pelvises.
Conclusions:
- One-third of CTAs revealed competent CMs.
- Awareness of CM anatomy is vital for surgeons and radiologists for safe decision-making.
- CMs can be absent in patients with smaller pelvic dimensions.
Purpose:
We evaluated the corona mortis (CM) anatomy by means of three-dimensional computerized tomography angiographic (CTA).
Methods:
Patient demographic, anastomosis incidence, artery diameter, artery distance from the symphysis pubis, and pelvic size (distance between both acetabular upper labrum) parameters were assessed. The 100 patients included 66 males and 34 females (average age of 67.8 years).
Results:
There were 66 (33%) arterial anastomoses in the 200 evaluated arteries, 30 in the right side and 36 in the left side, 36 unilaterally and 15 bilaterally. No anastomoses were detected in 49 patients. The average diameter was 2.4 mm for the right-sided arteries and 2.24 in the left-sided ones. The distance was 55.2 mm from the right symphysis and 57.2 from the left symphysis (greater for females, 62.2 versus 55.85 mm [p = 0.037] only on the left side). The artery disappears in smaller-sized pelvises. There was a non-occluded arterial pattern in 47 (71%) and a partially occluded one in 19 (29%, all with peripheral vascular disease).
Conclusion:
One-third of the evaluated CTAs revealed competent CMs. CMs were more lateral in females than in males and were absent in small-sized pelvises. It is highly recommended that the radiologist and the surgeon should be familiar with CM existence for decision-making with regard to emergency radiology imaging and intervention as well as when operating in proximity of that anatomic site.