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Related Experiment Video

Updated: Jun 30, 2026

Dissection of Larval Zebrafish Gonadal Tissue

Dissection of Larval Zebrafish Gonadal Tissue

Published on: April 26, 2017

Trunk asymmetry in juveniles.

Theodoros B Grivas¹, Elias S Vasiliadis, Constantinos Mihas

¹Orthopaedic Department, "Thriasio" General Hospital, G, Gennimata Av, 19600, Magoula, Attica, Greece. grivastb@vodafone.net.gr.

|September 25, 2008

Summary

Trunk asymmetry (TA) is more common in adolescents than juveniles, with girls showing greater symmetry than boys. Severe TA, potentially indicating scoliosis, is more frequent on the left side in juveniles.

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Area of Science:

Pediatric Orthopedics
Developmental Anatomy
Spinal Health

Background:

Trunk asymmetry (TA) is prevalent in children, but its juvenile incidence and developmental patterns remain understudied.
Understanding TA evolution from childhood to adolescence is crucial for early detection of spinal conditions.

Purpose of the Study:

To determine the incidence of TA in normal juveniles aged 3-9 years.
To describe the developmental changes in TA from juvenile to adolescent stages.
To compare TA prevalence between genders and its correlation with spinal health.

Main Methods:

Cross-sectional study of 3301 children (1645 boys, 1656 girls) aged 3-9 years.
Scoliometer readings in standing and sitting forward bending positions (FBP) to measure angle of trunk rotation (ATR).
Categorization of TA: symmetric (ATR=0°), mild (1°-6°), severe (≥7°); analysis by age and gender.

Main Results:

Juveniles exhibit higher symmetry (74-84%) compared to previously studied adolescents.
Girls show greater symmetry than boys, though severe TA incidence is similar.
Significant TA changes occur between ages 6-9, with boys showing later pattern shifts than girls.

Conclusions:

Juvenile trunk asymmetry patterns differ from adolescents, with girls being more symmetric.
TA findings align with higher juvenile idiopathic scoliosis incidence in boys.
Severe TA, particularly on the left, may indicate potential spinal curvature, warranting orthopedic assessment.