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Morphological characteristics of the acetabulum
Antun Salamon1, Tomislav Salamon, Davorin Sef
1Department of Surgery, University Hospital Dubrava, Zagreb, Croatia.
Collegium Antropologicum
|December 2, 2004
Summary
This study precisely measured the acetabular surface area and geometry in pelvic bones. Significant correlations were found between acetabular surface area, opening curvature, and depth.
Area of Science:
- Anatomy
- Biomechanics
- Orthopedics
Background:
- Accurate measurement of the acetabulum (hip socket) is crucial for understanding hip joint function and pathology.
- Variability in acetabular geometry can influence joint stability and predispose to conditions like hip dysplasia or osteoarthritis.
Purpose of the Study:
- To accurately measure the surface area of the semi-lunar articular surface of the pelvis (facies lunata acetabuli).
- To assess the variability of acetabular geometry.
- To determine correlations between measured parameters of the acetabulum.
Main Methods:
- Measurement of 30 macerated human pelvic bone specimens.
- Classical measurement of radius and depth.
- Novel surface area measurement using small paper fragments to account for curvature, followed by computerized analysis.
Main Results:
- The average surface area of the facies lunata acetabuli was 2294 +/- 329 mm2.
- The diameter of the acetabular opening averaged 25.8 +/- 1.9 mm, and acetabular depth averaged 30 +/- 3.2 mm.
- Strong correlations were confirmed between surface area and radius (r=0.71), surface area and depth (r=0.80), and radius and depth (r=0.80).
Conclusions:
- A simple and cost-effective method using paper fragments and software analysis provides precise assessment of facies lunata acetabuli surface area.
- Significant correlations exist between acetabular depth, opening, and the surface area of the facies lunata, highlighting the interconnectedness of acetabular geometry.