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Related Concept Videos

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Related Experiment Video

Updated: Dec 3, 2025

Longitudinal Micro-Computed Tomography Image Analysis for User-Defined Region of Interest in Critical-Sized Bone Defects
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The pediatric proximal ulna: a radiographic study.

Mingyuan Han1, Bo Dai1, Xuchao Shi2

  • 1Department of Orthopaedics Surgery, Beilun People's Hospital, No.1288, Lushan East Road, Ningbo, 315800, Zhejiang Province, China.

Archives of Orthopaedic and Trauma Surgery
|October 28, 2020
PubMed
Summary

This study details pediatric proximal ulna anatomy using X-rays, finding age correlates with total ulnar length and proximal ulna dorsal angulation. These findings aid pediatric orthopedic surgeons in fracture treatment.

Keywords:
ElbowPediatricProximal ulnaProximal ulna dorsal angulationRadiographic studyTip-to-apex

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Area of Science:

  • Pediatric Orthopedics
  • Radiographic Anatomy
  • Pediatric Bone Development

Background:

  • The proximal ulna's anatomy is well-documented in adults but not comprehensively in children.
  • Understanding pediatric proximal ulna anatomy is crucial for accurate diagnosis and treatment of forearm injuries.

Purpose of the Study:

  • To describe the radiographic anatomy of the pediatric proximal ulna.
  • To establish normative data for key measurements in children aged 0-12 years.
  • To compare pediatric measurements with adult data.

Main Methods:

  • Lateral forearm X-rays of 189 children (0-12 years) were analyzed.
  • Measurements included proximal ulna dorsal angulation (PUDA), tip-to-apex (TTA), and total ulnar length (TUL).
  • Correlations with age, gender, and adult values were assessed, with reliability confirmed by orthopedic surgeons.

Main Results:

  • Strong positive correlation between age and TUL (r=0.834).
  • Moderate negative correlation between age and PUDA (r=-0.405).
  • Pediatric measurements differed significantly from adult values (p < 0.05), except for PUDA. No significant gender differences were found.

Conclusions:

  • This study provides essential anatomical data for the pediatric proximal ulna.
  • Accurate knowledge of pediatric proximal ulna anatomy improves fracture treatment and outcomes.
  • Restoring correct forearm anatomy in pediatric patients leads to better clinical results.