ORIGINAL ARTICLE   

Minerva Biotecnologica 2017 March;29(1):41-9

DOI: 10.23736/S1120-4826.16.02147-9

Copyright © 2016 EDIZIONI MINERVA MEDICA

lingua: Inglese

An accurate method of radiological assessment of acetabular abduction and anteversion angles in three-dimensional reconstruction of multi-slice spiral computed tomography

Xin C. FAN ¹, Wen W. FAN ², Feng Y. WANG ³, Chun L. YU ¹, Hai T. ZHU ¹, Kai B. WEI ¹, Zhen B. MA ⁴, Feng LIU ¹ ✉

¹ Department of Orthopedics, Taian Center Hospital of Shandong Province, Taian, China; ² Department of Pediatrics, Women and Children Hospital of Qingdao City, Qingdao, China; ³ Department of Urinary Surgery, The Third People’s Hospital of Qingdao City, Qingdao, China; ⁴ Department of Radiology, Taian Center Hospital of Shandong Province, Taian, China

BACKGROUND: The characteristics of acetabular abduction angle and anteversion in three dimensions are still unclear. This study aimed to assess the diagnostic values of acetabular abduction angle and anteversion by three-dimensional reconstruction of multi-slice spiral CT (MSCT).
METHODS: To verify the reliability and accuracy of the acetabular abduction angle and anteversion by using MSCT, both manual and radiological examinations of pelves (N.=30) and acetabula (N.=60) were included in the study. The manual examination was performed with a protractor and a digital goniometer (Protractor). The radiological examination was performed by using the digital X-ray photography (DR) and MSCT (3D). The pelvic anterior plane (PAP) served as a reference plane throughout the study.
RESULTS: No significant difference was found among protractor, DR, and 3D measurement of acetabular abduction angles and anteversion angles [(16.24±4.74)°, (16.44±4.82)° vs. (15.82±4.62)°, P>0.05)]. Comparisons revealed significant positive correlations among protractor, DR, and 3D measurement of acetabular abduction angles and anteversion angles.
CONCLUSIONS: Our study shows a new, reliable diagnostic tool for measuring the acetabular abduction angle and anteversion in THA or other hip surgeries.

KEY WORDS: Bone anteversion - Tomography, spiral computed - Arthroplasty