Prevalence of Accessory Sacroiliac Joint and Its Clinical Significance

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  • Ömer Faruk Cihan
  • Rabia Taşdemir Gaziantep Islam Science and Technology University, Gaziantep, Turkey
  • Mehmet Karabulut Department of Anatomy, Faculty of Medicine, Selçuk University, Konya, Turkey



Accessory sacroiliac joint, variation, BT, dry bone


Objective: To determine the prevalence of the accessory sacroiliac joint (ASIJ) on both computed tomography (CT) images and dry bones and ultimately, to contribute to the literature.

Materials and Methods: CT images archived in the Radiology department of Gaziantep University Medical Faculty obtained from 145 individuals (104 males and 41 females) as well as 92 sacral bones were examined. 

Results:  The prevalence of ASIJ among 92 sacral bones was 15.2%. The ASIJ was more commonly (52%) located at the posterior portion of the SIJ at the level of the second dorsal sacral foramen. In 48% of the bones, ASIJ was identified just above the first dorsal sacral foramen. Unilateral ASIJ was observed in 10.8% and bilateral ASIJ in 4.4% of the sacral bones. On CT images, ASIJ was found in 7.8% of the males and 7.2% of the females. The total prevalence of sacroiliac joint variations was 28.9%, and 6.8% of them were ASIJs.

Conclusion: It should be kept in mind that ASIJ may be a source of arthritis and chronic hip pain. The presence of ASIJ should be sought through imaging studies for early diagnosis of ASIJ.


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How to Cite

Cihan, Ömer F.; Taşdemir, R.; Karabulut, M. Prevalence of Accessory Sacroiliac Joint and Its Clinical Significance. Eur J Ther 2023.



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