The Hip Morphology Changes with Ageing in Asian Population

Area of Science:

• Orthopedics and Gerontology
• Biomechanical analysis of hip joint anatomy

Background:

• Hip anatomy parameters, including femoral neck torsion angle (FNTA), neck-shaft angle (NSA), and acetabular anteversion angle (AVA), change with age.
• Understanding these changes is crucial for addressing lower extremity extorsion in the elderly population.

Purpose of the Study:

• To investigate age-related alterations in hip anatomy parameters.
• To elucidate the relationship between these anatomical changes and lower extremity extorsion in older adults.

Main Methods:

• Retrospective analysis of imaging data from 140 patients.
• Measurement of FNTA, NSA, and AVA by an orthopedic surgeon.
• Statistical analysis including t-tests, ANOVA, correlation, and regression analysis.

Main Results:

• FNTA and AVA showed significant correlation with age (P<0.05).
• NSA correlated with age, weight, and BMI (P<0.05), with age being an independent contributor.
• Females exhibited higher FNTA values than males (P<0.01).

Conclusions:

• Age-related decreases in NSA and FNTA, alongside an increase in AVA, are observed in the Asian population.
• These anatomical shifts likely contribute to lower extremity extorsion in the elderly.
• Awareness of these changes is vital for effective hip-related surgical interventions in older patients.