Related Experiment Video

Updated: Aug 23, 2025

Assessment of Child Anthropometry in a Large Epidemiologic Study
09:36

Assessment of Child Anthropometry in a Large Epidemiologic Study

Published on: February 2, 2017

27.2K

Determination of the umbilicus position in Japanese children

Isamu Saeki1, Sho Kurihara1, Masato Kojima1

  • 1Department of Pediatric Surgery, Hiroshima University Hospital, Hiroshima, Japan.

Pediatrics International : Official Journal of the Japan Pediatric Society
|November 3, 2022
PubMed

Insights

The anterior superior iliac spine to umbilicus (AU) angle, measured via CT scans, is a reliable indicator for determining umbilical position in children. This method offers greater accuracy than surface measurements.

Area of Science:

  • Anatomy
  • Medical Imaging
  • Pediatrics

Background:

  • Traditional umbilical position measurements rely on external landmarks, potentially lacking precision.
  • Accurate anatomical reference points are crucial for pediatric assessments and surgical planning.

Purpose of the Study:

  • To establish a precise method for determining the normal umbilical position in children using computed tomography (CT).
  • To evaluate specific angular measurements as predictors of umbilical location.

Main Methods:

  • Retrospective analysis of CT scans from 120 Japanese children (60 boys, 60 girls).
  • Measurement of the anterior superior iliac spine to umbilicus (AU) angle, iliac crest to umbilicus (IU) angle, and umbilical-pubic symphysis length ratios.
  • Statistical analysis to identify significant differences and variations.

Main Results:

  • The AU angle demonstrated the least data variation (mean 33.7° ± 5.1°).
  • A statistically significant difference in AU angle was observed between boys and girls (p=0.04).
  • Defining the umbilicus position by AU angle (33° for boys, 35° for girls) accurately located 95.8% of children within ±10°.

Conclusions:

  • The AU angle is identified as the most reliable predictor for the normal umbilical position in children.
  • CT-based AU angle measurements provide a more accurate and consistent assessment compared to surface-based methods.
Abstract

Keywords:
abdominoplastychildrencomputed tomographymeasurementsumbilicus

More Related Videos

Isolation and Characterization of Human Umbilical Cord-derived Mesenchymal Stem Cells from Preterm and Term Infants07:26

Isolation and Characterization of Human Umbilical Cord-derived Mesenchymal Stem Cells from Preterm and Term Infants

Published on: January 26, 2019

14.2K
Hemodynamic Precision in the Neonatal Intensive Care Unit using Targeted Neonatal Echocardiography09:31

Hemodynamic Precision in the Neonatal Intensive Care Unit using Targeted Neonatal Echocardiography

Published on: January 27, 2023

1.0K

Related Concept Videos

Abdominal Regions and Quadrants01:19

Abdominal Regions and Quadrants

To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four...
9.8K
Assessment of the Abdomen III: Palpation01:23

Assessment of the Abdomen III: Palpation

Palpation is a crucial tactile examination method for assessing abdominal organs and detecting conditions like tenderness, distention, masses, or fluid. It involves both light and deep palpation techniques, each serving specific diagnostic purposes. Light palpation helps identify tenderness and other surface-level indicators, while deep palpation locates and assess abdominal masses and organ boundaries. A skilled professional can gather valuable insights through palpation, including evaluating...
1.0K
Anatomical Positions01:11

Anatomical Positions

In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
11.2K
Determination01:51

Determination

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. Specification is demonstrated by removing a segment of an early embryo, “neutrally” culturing the tissue in vitro—for example, in a petri dish with simple medium—and then observing the derivatives. If the cultured region gives rise to cell types that it would normally generate in the embryo, this means that it is specified. In...
18.9K
Assessment of the Abdomen I: Inspection and Auscultation01:25

Assessment of the Abdomen I: Inspection and Auscultation

Introduction
The abdominal examination is a cornerstone of clinical medicine, serving as a critical tool in diagnosing various gastrointestinal (GI) diseases. It involves a systematic approach that includes inspection and auscultation, each with distinct yet complementary roles in assessing the abdomen. This article will delve into these two primary methods healthcare professionals use to examine the abdomen.
Inspection of the Abdomen
The first step in any abdominal examination is inspection....
597