Chinese Journal Of Clinical Anatomy ›› 2019, Vol. 37 ›› Issue (1): 14-19.doi: 10.13418/j.issn.1001-165x.2019.01.004

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Observation of CT imaging anatomy of normal sacroiliac joint space in adults and its clinical significance

ZHANG Shao-qun1, FENG Zi-yu1, CHEN Yan-ping2, ZHANG Lei 1,3, QI Ji1, LI Yi-kai1   

  1. 1. College of traditional Chinese Medicine, Southern Medical University, Guangzhou, 510515;  2. Nanfang Hospital, Southern Medical University, Guangzhou, 510515;  3. Department of Anatomy, College of basic Medicine, Southern Medical University, Guangzhou, 510515, China
  • Received:2018-06-22 Online:2019-01-25 Published:2019-02-20

Abstract:

Objective To observe the anatomical characteristics in the CT appearance of normal sacroiliac joint (SIJ) space in adults, and to provide statistics for imaging diagnosis in sacroiliac joint subluxation. Methods The statistical analysis of CT images of normal sacroiliac joint space was performed in 56 patients, with no pathologic change in sacroiliac joint, to observe: ① sex difference of SIJ space in same position; ② difference of SIJ space in 6 transverse levels correlated to sacrum levels; ③ difference of SIJ space among anterior, middle and posterior area in transverse plane; ④ difference of SIJ space between left and right in the transverse plane. Results  ① Sex difference of SIJ space in LP area of S2-1 and S2-2 was statistically significant (P<0.05); ②Difference of SIJ space among anterior, middle and posterior area in the same side of each transverse level (from S1-1 to S3-2) was all statistically significant (P<0.05); ③In RA area, SIJ space in S1-1 was wider than S1-2, S2-1, S2-2 and S3-2, respectively (P<0.05); 4) In LM area, SIJ space in S2-1 was wider than S1-1, S1-2, S2-2 and S3-2, respectively (P<0.05); ④ In RM area, SIJ space in S2-1 was wider than S3-2 and S3-2, respectively (P<0.05); ⑥ In LP area, SIJ space in S2-1 was wider than S3-2 (P<0.05); ⑦ In RP area, SIJ space in S2-2 is wider than S3-2 (P<0.05).    Conclusions    This analysis offers a reference for imaging anatomy of normal sacroiliac joint space in adults. There are imaging anatomic differences in adult’s normal sacroiliac joint space on transverse and coronal plane.

Key words: Sacroiliac joint subluxation,  Sacroiliac joint space,  Imaging anatomy,  CT