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Published on: November 27, 2017
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Humeral Development Throughout the Arc of Childhood-A 3D MRI Study
Paige M Lind1, Michael L Pearl2, Katharine E Alter1
1The Department of Rehabilitation Medicine, NIH, Bethesda, Maryland, USA.
Summary
This study provides the first in vivo measurements of pediatric humeral development, crucial for treating shoulder injuries. Humeral size, version, and inclination show steady growth patterns throughout childhood, aiding clinical planning.
Area of Science:
- Orthopedic Surgery
- Pediatric Orthopedics
- Biomedical Engineering
Background:
- Optimizing treatment for pediatric orthopedic disorders and athletic injuries requires understanding humeral morphology during development.
- Current data on normative pediatric humeral development is lacking, hindering effective clinical interventions.
Purpose of the Study:
- To establish biomechanically relevant humeral size and shape measures across pediatric development (0.6-18.8 years).
- To provide normative in vivo data for pediatric humeral morphology to aid clinical planning.
Main Methods:
- Generated 3D models from MR images of 52 typically developing pediatric humeri.
- Utilized quadratic regression to analyze the relationship between humeral parameters and age.
- Compared dominant and non-dominant humeri in a sub-cohort.
Main Results:
- Humeral size (head diameter, length, epicondylar width) demonstrated strong correlations with age (R² > 0.88).
- Humeral version and inclination showed weaker relationships with age, indicating variability.
- Contralateral humeri showed no significant differences, supporting their use as comparators.
Conclusions:
- Established normative in vivo humeral development data from infancy to adulthood.
- Findings support using contralateral limb data for unilateral pathology assessment if within normative ranges.
- The derived data is essential for pediatric orthopedic clinical interventional planning.
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