A radiographic study of pediatric ulnar anatomy

Mattia Cravino, Julius Oni, Debra A. Sala, Alice Chu

Research output: Contribution to journalArticle

Abstract

Background: The adult ulna has a unique bony architecture that has been described in the literature, but, to the best of our knowledge, the ulnar anatomy in children has not been described. Methods: We examined 75 anteroposterior (AP) and 64 lateral radiographs (29 were bilateral) of 50, 0.5- to 11-year-old, healthy children's forearms. On AP radiographs, the total ulnar length, the ulnar proximal angle, the ulnar distal angle, and the distance between each angle from the tip of the triceps insertion; and, on lateral radiographs, the ulnar length and bow deviation were measured. The correlation between age and radiographic measurements, differences based on sex, differences compared with adults' measurements, and interobserver/intraobserver reliability were assessed. Results: Age had a very strong/strong positive correlation with length/distance measurements on both AP and lateral radiographs. Only AP ulnar distal angle was significantly different between sexes (females > males). Compared with the adult ulnar studies, the AP proximal angle in children is significantly smaller and the location of this angle is significantly more distal. Interobserver and intraobserver reliability were very good for length/distance measurements on AP and lateral radiographs. Conclusions: The knowledge of pediatric ulnar anatomy could be helpful in the treatment of forearm deformities due to multiple hereditary exostosis and osteogenesis imperfecta, and in the treatment of ulnar fractures, particularly in Monteggia variants, where restoration of the correct forearm anatomy is essential to obtain good clinical and functional results. Level of evidence: Study of diagnostic test, Level II.

Original languageEnglish (US)
Pages (from-to)537-541
Number of pages5
JournalJournal of Pediatric Orthopaedics
Volume34
Issue number5
DOIs
StatePublished - 2014
Externally publishedYes

Fingerprint

Forearm
Anatomy
Pediatrics
Multiple Hereditary Exostoses
Osteogenesis Imperfecta
Ulna
Routine Diagnostic Tests
Sex Characteristics
Therapeutics

Keywords

  • Anatomy
  • Bow deviation
  • Children
  • Monteggia
  • Osteogenesis imperfecta
  • Proximal angle
  • Ulna

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Orthopedics and Sports Medicine
  • Medicine(all)

Cite this

A radiographic study of pediatric ulnar anatomy. / Cravino, Mattia; Oni, Julius; Sala, Debra A.; Chu, Alice.

In: Journal of Pediatric Orthopaedics, Vol. 34, No. 5, 2014, p. 537-541.

Research output: Contribution to journalArticle

Cravino, Mattia ; Oni, Julius ; Sala, Debra A. ; Chu, Alice. / A radiographic study of pediatric ulnar anatomy. In: Journal of Pediatric Orthopaedics. 2014 ; Vol. 34, No. 5. pp. 537-541.
@article{8b4a4616969647edb5e5d20f00e1dc06,
title = "A radiographic study of pediatric ulnar anatomy",
abstract = "Background: The adult ulna has a unique bony architecture that has been described in the literature, but, to the best of our knowledge, the ulnar anatomy in children has not been described. Methods: We examined 75 anteroposterior (AP) and 64 lateral radiographs (29 were bilateral) of 50, 0.5- to 11-year-old, healthy children's forearms. On AP radiographs, the total ulnar length, the ulnar proximal angle, the ulnar distal angle, and the distance between each angle from the tip of the triceps insertion; and, on lateral radiographs, the ulnar length and bow deviation were measured. The correlation between age and radiographic measurements, differences based on sex, differences compared with adults' measurements, and interobserver/intraobserver reliability were assessed. Results: Age had a very strong/strong positive correlation with length/distance measurements on both AP and lateral radiographs. Only AP ulnar distal angle was significantly different between sexes (females > males). Compared with the adult ulnar studies, the AP proximal angle in children is significantly smaller and the location of this angle is significantly more distal. Interobserver and intraobserver reliability were very good for length/distance measurements on AP and lateral radiographs. Conclusions: The knowledge of pediatric ulnar anatomy could be helpful in the treatment of forearm deformities due to multiple hereditary exostosis and osteogenesis imperfecta, and in the treatment of ulnar fractures, particularly in Monteggia variants, where restoration of the correct forearm anatomy is essential to obtain good clinical and functional results. Level of evidence: Study of diagnostic test, Level II.",
keywords = "Anatomy, Bow deviation, Children, Monteggia, Osteogenesis imperfecta, Proximal angle, Ulna",
author = "Mattia Cravino and Julius Oni and Sala, {Debra A.} and Alice Chu",
year = "2014",
doi = "10.1097/BPO.0000000000000138",
language = "English (US)",
volume = "34",
pages = "537--541",
journal = "Journal of Pediatric Orthopaedics",
issn = "0271-6798",
publisher = "Lippincott Williams and Wilkins",
number = "5",

}

TY - JOUR

T1 - A radiographic study of pediatric ulnar anatomy

AU - Cravino, Mattia

AU - Oni, Julius

AU - Sala, Debra A.

AU - Chu, Alice

PY - 2014

Y1 - 2014

N2 - Background: The adult ulna has a unique bony architecture that has been described in the literature, but, to the best of our knowledge, the ulnar anatomy in children has not been described. Methods: We examined 75 anteroposterior (AP) and 64 lateral radiographs (29 were bilateral) of 50, 0.5- to 11-year-old, healthy children's forearms. On AP radiographs, the total ulnar length, the ulnar proximal angle, the ulnar distal angle, and the distance between each angle from the tip of the triceps insertion; and, on lateral radiographs, the ulnar length and bow deviation were measured. The correlation between age and radiographic measurements, differences based on sex, differences compared with adults' measurements, and interobserver/intraobserver reliability were assessed. Results: Age had a very strong/strong positive correlation with length/distance measurements on both AP and lateral radiographs. Only AP ulnar distal angle was significantly different between sexes (females > males). Compared with the adult ulnar studies, the AP proximal angle in children is significantly smaller and the location of this angle is significantly more distal. Interobserver and intraobserver reliability were very good for length/distance measurements on AP and lateral radiographs. Conclusions: The knowledge of pediatric ulnar anatomy could be helpful in the treatment of forearm deformities due to multiple hereditary exostosis and osteogenesis imperfecta, and in the treatment of ulnar fractures, particularly in Monteggia variants, where restoration of the correct forearm anatomy is essential to obtain good clinical and functional results. Level of evidence: Study of diagnostic test, Level II.

AB - Background: The adult ulna has a unique bony architecture that has been described in the literature, but, to the best of our knowledge, the ulnar anatomy in children has not been described. Methods: We examined 75 anteroposterior (AP) and 64 lateral radiographs (29 were bilateral) of 50, 0.5- to 11-year-old, healthy children's forearms. On AP radiographs, the total ulnar length, the ulnar proximal angle, the ulnar distal angle, and the distance between each angle from the tip of the triceps insertion; and, on lateral radiographs, the ulnar length and bow deviation were measured. The correlation between age and radiographic measurements, differences based on sex, differences compared with adults' measurements, and interobserver/intraobserver reliability were assessed. Results: Age had a very strong/strong positive correlation with length/distance measurements on both AP and lateral radiographs. Only AP ulnar distal angle was significantly different between sexes (females > males). Compared with the adult ulnar studies, the AP proximal angle in children is significantly smaller and the location of this angle is significantly more distal. Interobserver and intraobserver reliability were very good for length/distance measurements on AP and lateral radiographs. Conclusions: The knowledge of pediatric ulnar anatomy could be helpful in the treatment of forearm deformities due to multiple hereditary exostosis and osteogenesis imperfecta, and in the treatment of ulnar fractures, particularly in Monteggia variants, where restoration of the correct forearm anatomy is essential to obtain good clinical and functional results. Level of evidence: Study of diagnostic test, Level II.

KW - Anatomy

KW - Bow deviation

KW - Children

KW - Monteggia

KW - Osteogenesis imperfecta

KW - Proximal angle

KW - Ulna

UR - http://www.scopus.com/inward/record.url?scp=84902251671&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84902251671&partnerID=8YFLogxK

U2 - 10.1097/BPO.0000000000000138

DO - 10.1097/BPO.0000000000000138

M3 - Article

VL - 34

SP - 537

EP - 541

JO - Journal of Pediatric Orthopaedics

JF - Journal of Pediatric Orthopaedics

SN - 0271-6798

IS - 5

ER -