Acetabular inclination and anteversion in infants using 3D MR imaging.
OBJECTIVE
To establish if 3D MR imaging could be used for measurements of acetabular inclination and anteversion in infants specimens.


METHODS
3D MR data of 3 pelvic preparations of 6-week- to 10-month-old infant specimens was gathered. MR imaging in transaxial and frontal planes was carried out to measure the acetabular inclination and anteversion: a method to determine the MR planes for measurements is described. It was oriented on anatomical landmarks of the pelvis and therefore allowed adjustment of the frontal and transaxial planes, independent of the pelvis position.


RESULTS
The mean acetabular inclination angle was 48 degrees, and the mean acetabular anteversion was 23 degrees. Because of the low number of cases the results can only be assessed as a tendency, but MR imaging seems to be suitable for measurements of acetabular inclination and anteversion.
Falliner
A
A
Department of Orthopaedic Surgery, University of Kiel, Germany.
Muhle
C
C
Brossmann
J
J
D000077:Acetabulum / Q000033:anatomy & histology*; D002102:Cadaver; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male