An accessory sacroiliac joint

Neto, NS Rosa; Vitule, Luiz Fernando; Gonçalves, CR; Goldenstein-Schainberg, Cláudia

doi:10.3109/03009740903036008

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…However, CT aids in the detection of structural changes or anatomical variations, and is also useful in differentiating the cause of sacroiliitis other than ankylosing spondylitis or axial spondyloarthritis. A reason for delayed diagnosis is that many clinicians are unaware of the fact that ASIJ may be a cause of chronic hip or low back pain [16,22].…”

Section: Discussionmentioning

confidence: 99%

“…ASIJ is common in the general population and may be associated with the coexistence of back and sacroiliac joint pain. Therefore, rheumatologists, physical therapists, orthopedists and algologists should be familiar with this anatomical variation and be able to differentiate imaging features of other diseases (e.g., axial spondyloarthropathy) that mimic sacroiliitis mimicking [1,[10][11][12][13]16,18].…”

Section: Discussionmentioning

confidence: 99%

“…While this accessory joint can be found bilaterally, it is often unilateral [4][5][6]11]. Located at the posterior aspect of the SIJ, ASIJ has usually been described as having a superficial structure at the level of the second dorsal sacral foramen and a deep structure just above the first dorsal sacral foramen [13][14][15][16][17][18]. In a 1984 study, an axial sacroiliac joint was found to be located extracapsularly at the dorsocranial level of the SIJ.…”

Section: Introductionmentioning

confidence: 99%

“…Since most ASIJ cases are asymptomatic and often detected incidentally, clinical significance of ASIJ may be overlooked. However, there are studies reporting that ASIJ is associated with degenerative arthritis and may be a source of chronic hip or back pain [7][8][9][10][11]16,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Prevalence of Accessory Sacroiliac Joint and Its Clinical Significance

2023

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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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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prevalence of Accessory Sacroiliac Joint and Its Clinical Significance

2023

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“…[1] ASIJ is more common in elderly, obese patients, and women with a previous history of 3 or more deliveries. [2] In a previous study of anatomical variants of SI joints using computed tomography (CT), ASIJ was identified as the most common variant, with a prevalence of 19%. [3] However, clinical significance is considered less important because most ASIJ cases are asymptomatic and the majority are found incidentally.…”

Section: Introductionmentioning

confidence: 99%

Progressive sacroiliitis due to accessory sacroiliac joint mimicking ankylosing spondylitis

Song

Lee

2019

Medicine

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Rationale: An accessory sacroiliac (SI) joint usually has little clinical significance. However, severe arthritic changes can cause chronic buttock or low back pain and can be misdiagnosed as another disease presenting with sacroiliitis such as ankylosing spondylitis (AS). Patient concerns: A 33-year-old woman was diagnosed with AS due to chronic buttock pain and progressive sacroiliitis on plain X-ray and magnetic resonance imaging (MRI). Her buttock and low back pain gradually worsened despite proper treatment for AS. Diagnosis: Computed tomography revealed an accessory SI joint with arthritic changes. Interventions: Nonsteroidal anti-inflammatory drugs (NSAIDs) and restricted movement were prescribed. Outcomes: The symptoms were controlled with NSAIDs, rest, and restriction of excessive movement. The medication could be stopped after the pain subsided. Lessons: An accessory SI joint can be a cause of chronic back pain and can be misdiagnosed as AS with sacroiliitis when progressive arthritic changes are observed. Therefore, additional imaging studies other than conventional X-ray or MRI may be required for accurate diagnosis.

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