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The Baumann Angle: An Analysis from Theory to Practice
Talissa O Generoso1, Giovani M Pacifico Junior1, Filipe M Barcelos1
1Hospital Israelita Albert Einstein, São Paulo, SP, Brasil.
Revista Brasileira De Ortopedia
|December 21, 2022
Summary
The Baumann angle (BA) measurement in pediatric elbow X-rays is highly variable and unreliable for assessing deformities. Poor radiographic quality significantly increases the likelihood of inaccurate BA measurements.
Area of Science:
- Pediatric Orthopedics
- Radiology
- Medical Imaging Analysis
Background:
- The Baumann angle (BA) is a measurement used in pediatric elbow radiography.
- Assessing angular deformities in children's elbows requires reliable radiographic measurements.
Purpose of the Study:
- To investigate the impact of radiographic quality on Baumann angle (BA) measurements in children.
- To determine if inadequate radiographic inclinations affect the accuracy of BA measurements.
Main Methods:
- Analysis of distal humerus radiographs from 141 children aged 3-10 years.
- Comparison of BA measurements by five observers, with radiographs classified as adequate or inadequate.
- Evaluation of the correlation between radiographic quality and BA normality.
Main Results:
- Approximately 33.3% of radiographs were deemed inadequate.
- A significant proportion of BA measurements outside normal limits occurred in inadequate radiographs (31.1% vs. 6.2%, p < 0.001).
- 16% of all BA measurements fell outside established normal ranges.
Conclusions:
- The Baumann angle (BA) alone is an unreliable indicator of pediatric elbow angular deformities due to high variability.
- Radiographic quality is a critical factor influencing the variability and reliability of BA measurements.
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