Femoral head epiphysis growth and development among Chinese children aged 0-5 years

Area of Science:

• Pediatric Orthopedics
• Developmental Biology
• Radiology

Background:

• The femoral head epiphysis is crucial for hip joint development.
• Understanding its growth patterns is essential for diagnosing developmental hip disorders.
• Existing data on Chinese children's femoral head epiphysis development is limited.

Purpose of the Study:

• To investigate the growth and development patterns of the femoral head epiphysis in healthy Chinese children aged 0-5 years.
• To identify gender-specific differences in femoral head epiphysis growth.
• To develop predictive models for femoral head epiphysis diameter based on age and gender.

Main Methods:

• A cross-sectional study involving 1,450 healthy Chinese children (0-5 years old).
• Pelvic X-ray photography was used to measure the diameter of the femoral head epiphysis.
• Medical image processing software analyzed the radiographic measurements.
• Cubic regression analysis was employed to establish age- and gender-specific growth equations.

Main Results:

• Femoral head epiphysis growth in girls initiates 2-3 months earlier than in boys.
• Femoral head epiphysis diameter increases with age in both genders.
• Girls exhibited significantly larger femoral head epiphysis diameters than boys at specific ages (2, 3, 4, 6, and 10 months).
• Cubic regression models were successfully developed for predicting femoral head epiphysis diameter in boys and girls.

Conclusions:

• Significant gender differences exist in the growth and development patterns of the femoral head epiphysis among Chinese children.
• The developed prediction models offer valuable tools for the early diagnosis of conditions affecting femoral head epiphysis growth.
• This study provides normative data crucial for pediatric orthopedic assessments in the Chinese population.