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Tibial torsion?
Clinical Orthopaedics and Related Research
|January 1, 1976
Summary
Infant lower extremity development shows a natural increase in external rotation of the bimalleolar axis. This gradual rotation, from birth to 24 months, is a normal part of growth.
Area of Science:
- Pediatrics
- Orthopedics
- Human Growth and Development
Background:
- Understanding the typical development of infant lower extremities is crucial for identifying potential abnormalities.
- The bimalleolar axis rotation in infants has not been extensively documented longitudinally.
Purpose of the Study:
- To longitudinally assess the degree of external rotation of the bimalleolar axis in infants.
- To determine if this rotation correlates with factors such as sex, race, or age of independent walking.
Main Methods:
- A longitudinal study design was employed.
- Measurements of the bimalleolar axis rotation were taken at birth, 6 months, 12 months, and 24 months.
- Statistical analysis was used to evaluate changes and correlations.
Main Results:
- A statistically significant, gradual external rotation of the bimalleolar axis was observed from birth (mean 4 degrees) to 24 months (mean 11 degrees).
- No significant correlation was found between the degree of rotation and the child's sex, race, or age at which independent walking began.
Conclusions:
- The observed external rotation of the bimalleolar axis is a normal component of infant lower extremity growth and development.
- This finding helps establish normative data for pediatric orthopedic assessments.