Objective: To explore the difference of measurement data of hip joint related parameters in specific plane and conventional plane, and to provide standardized basis for the measurement of three-dimensional data of hip joint. Methods: The CT images of 32 adults ( adult group ) and 16 general anatomical specimens ( specimen group ) of normal hip joint were selected for three-dimensional reconstruction, and the three-dimensional images were reconstructed in a specific plane reference frame. The sharp angle, abduction angle, anteversion angle, central edge angle, acetabular anteroposterior diameter and acetabular depth of the hip joint were measured. At the same time, the above indexes were compared and analyzed with the conventional plane reference frame, which was widely used in clinical practice. Statistical analysis was performed using t test, nonparametric Mann-Whitney U test and Wilcoxon signed rank test. Results: Compared with the measured data under the two reference frames, there was a difference in the right rake angle index in the specimen group (P＜0.05). There was no significant difference in the anterior and posterior diameters of both sides of the acetabulum, the anterior inclination angles of both sides, and the right abduction angle in the adult group (P＞0.05). In the total sample, there was no significant difference in the anterior and posterior diameters of both sides of the acetabulum, the anterior inclination angles of both sides, and the left abduction angle, but there were significant differences in other indicators (P＜0.05). Under the specific plane reference frame, the left and right acetabular depths in the adult group were larger than those in the specimen group (P＜0.05). There was no significant difference in the indicators of the left and right sides of the acetabulum among the adult group, the specimen group and the two combinations (P＞0.05). Conclusion: The measurement of the angle parameters of the left and right acetabulum and the acetabulum in adult cadavers and gross anatomical wet specimens is not affected by the receptor position. The reference frame can reduce the measurement error caused by the forced position to a certain extent, and can reflect the actual situation of the acetabulum more objectively and accurately than the data measured by the conventional plane reference frame.
LIU Ya'ou
,
CUI Chengli
,
CAI Zhiping
,
GAO Tianyi
,
GONG Tao
,
LI Liang
. The application of CT three-dimensional post-processing technology in the measurement of relevant parameters in a specific reference frame of the hip joint[J]. Journal of Baotou Medical College, 2022
, 38(11)
: 23
-27
.
DOI: 10.16833/j.cnki.jbmc.2022.11.005
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