| Affiliation: | 1. Radiology Department, Faculty of Medicine, Ain Shams University, Egypt;2. Department of Orthopaedic Surgery (Pediatric Orthopedic Unit), Faculty of Medicine, Ain Shams University, Egypt;3. Ain Shams University, Faculty of Medicine, Abbaseya Square, Cairo 11566, Egypt;4. Military Medical Academy, Ehsan Abdel Koddous Street, Cairo 11371, Egypt |
| Abstract: | ObjectiveTo compare the accuracy of 2D and 3D CT measurements of femoral anteversion angle, in pediatric patients with developmental hip dysplasia.Materials and methodsTwenty patients (20 hips) with unilateral non syndromic DDH were studies. CT scans were performed using a 16 slice CT scanner to measure the femoral anteversion angle (FAVA) using 2D & 3D techniques. Findings were correlated with the intra operative measurements.ResultsThere was a significant difference between 2D & 3D methods. Results of clinical assessment were comparable to results of 3D CT assessment which range from 30 to 50° with a mean of 37.5°. Mean percent difference between 3D and intra operative measurement of FAVA was significantly lower than the corresponding value between 2D and intraoperative measurement of FAVA.Conclusion3D is more accurate than 2D in measuring the degree of FAVA in DDH patients. It is easily applied and rapid and doesn't require sophisticated software. |
