Open AccessCT measurement of femoral anteversion angle in patients with unilateral developmental hip dysplasia: A comparative study between 2D and 3D techniques
Author(s) -
Mennatallah Hatem Shalaby,
Shady Samir,
Ahmed Deif
Publication year - 2017
Publication title -
the egyptian journal of radiology and nuclear medicine /the egyptian journal of radiology and nuclear medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.19
H-Index - 13
eISSN - 2090-4762
pISSN - 0378-603X
DOI - 10.1016/j.ejrnm.2017.02.007
Subject(s) - medicine , nuclear medicine , hip dysplasia , femoral head , radiology , mean difference , significant difference , orthodontics , surgery , radiography , confidence interval
Objective: To compare the accuracy of 2D and 3D CT measurements of femoral anteversion angle, in pediatric patients with developmental hip dysplasia. Materials and methods: Twenty 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. Results: There 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. Conclusion: 3D 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. Keywords: Femoral anteversion angle (FAVA), Developmental dysplasia of the hip (DDH), 3D computed tomography (CT