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Normal knee angles in the adult Saudi population
Ahmed F El Fouhil1, Khalid I Khoshhal, Nizar A Al-Nakshabandi
1Department of Anatomy, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia. ahmedfathala@hotmail.com
Saudi Medical Journal
|November 8, 2011
Summary
Knee angles show ethnic variations. This study establishes reference values for the Saudi population, highlighting differences compared to Caucasian, Chinese, Japanese, and Australian Caucasians.
Area of Science:
- Orthopedics and Anthropology
- Radiographic analysis of skeletal morphology
Background:
- Establishing population-specific reference values for skeletal parameters is crucial for accurate clinical assessment.
- Previous studies have indicated ethnic variations in various skeletal measurements.
Purpose of the Study:
- To determine the normal range of knee angles in the adult Saudi population.
- To compare these Saudi knee angle values with existing data from other global populations.
Main Methods:
- Retrospective analysis of anteroposterior bilateral knee radiographs from 333 Saudi individuals (120 males, 213 females).
- Measurement of Tibiofemoral Angle (TFA), Lateral Distal Femoral Angle (LDFA), and Lateral Proximal Tibial Angle (LPTA).
- Statistical analysis to assess relationships with age, gender, and body side, and comparison with international data.
Main Results:
- Mean knee angles for Saudis: TFA 174.41°, LDFA 90.07°, LPTA 89.42°.
- No significant gender-based differences were found for any angle.
- Significant differences in TFA, LDFA, and LPTA were observed when comparing Saudi values to Caucasian, Chinese, and Japanese populations.
Conclusions:
- Knee angles exhibit ethnic variations, similar to other skeletal parameters.
- This study underscores the necessity of establishing and utilizing population-specific reference values for knee angles.
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