Digital technique assisted three-dimensional measurement of acetabular orientation for Chinese people

• Published in: Shanghai jiao tong da xue xue bao. Yi xue ban Vol. 36; no. 9; p. 1311
• Main Authors: Zhang, Heng-hui, Qu, Yang, Chen, Xiao-jun, Dai, Ke-rong, Wang, Liao, Ai, Song-tao
• Format: Journal Article
• Language: Chinese
• Published: 25.09.2016
• ISSN: 1674-8115
• DOI: 10.3969/j.issn.1674-8115.2016.09.011

Objective times To develop a reliable and accurate 3D acetabular orientation measurement method for Chinese people. Methods times CT data of 60 (30 males and 30 females) adult patients with disease irrelevant to bones were collected. 3D models of osseous pelves were generated and the 3D coordinates of osseous pelves were manually selected and optimized via iterations. A surface-based method was used to realize semi-automatic measurement of acetabular spatial parameters and describe acetabular characteristics of Chinese people. A software was developed to verify the accuracy and reliability of this method. Results times 3D model based acetabular measurement method was quite reliable (intraclass correlation coefficient [ICC]>0.999) and accurate. Both anteversion (average: 3.1[degrees], 95%CI 2.0[degrees]-4.2[degrees], P=0.004) and anatomic inclination (0.9[degrees], 95%CI 0.4[degrees]-1.4[degrees], P=0.028) of females were greater than those of males. There was no significant difference in bilateral acetabular