ArticleClinical rheumatology2022
Osteitis condensans ilii: prevalence and characteristics of a neglected mimic of sacroiliitis.
Article in Clinical rheumatology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.
- Diagnostic features of osteitis condensans ilii by MRI-a systematic literature review.Skeletal radiology · 2025Pooled it
- Imaging characteristics of osteitis condensans ilii. A follow-up study.Skeletal radiology · 2026Article
- Bone marrow oedema of the sacroiliac joint without spondyloarthritis: a retrospective study of 34 cases of osteitis condensans ilii.Rheumatology advances in practice · 2025Article
- Osteitis Condensans Illi - An overlooked cause of low back pain mimicking sacroiliitis.Clinical case reports · 2023Article
- Clustered Occurrence of Osteitis Condensans Ilii in Patients with Symptomatic Hip Dysplasia.Diagnostics (Basel, Switzerland) · 2023Article
- Diagnostics of Sacroiliac Joint Differentials to Axial Spondyloarthritis Changes by Magnetic Resonance Imaging.Journal of clinical medicine · 2023Review
- Prevalence and characteristics of diffuse idiopathic skeletal hyperostosis (DISH) in Italy.La Radiologia medica · 2022Article
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Authors and funding
12 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesOsteitis condensans ilii (OCI) is a benign condition characterised by triangular sclerosis of the iliac bone which may mimic radiographic sacroiliitis. Prevalence is estimated between 0.9 and 2.5%, with female predominance, but the most recent article reporting original epidemiological data in the general population was published in 1971. The aim of our study is to contribute updated figures about prevalence of OCI in Italy.
methodA retrospective review of pelvic radiographs was conducted. Consecutive patients visiting the emergency department of our Institution between 1st January and 31st December 2020 were enrolled. Individuals with a past diagnosis of axial spondyloarthritis were excluded. Presence of OCI was evaluated by two musculoskeletal radiologists. Clinical and radiologic features such as osteoarthritis and insertional enthesopathy were also assessed.
resultsWe included 1047 individuals (61% female) with a median age of 74 years. OCI was present in 10 cases, accounting for a prevalence in the general population of 1.0% (95% CI 0.5-1.7). All patients with OCI were women and, in the female sample, prevalence was 1.6% (95% CI 0.7-2.8). Clinical characteristics and associated radiographic features were not different between patients with OCI and women without OCI.
conclusionsThe prevalence of OCI observed in our study is consistent with previous literature, and we confirm that it is more frequently retrieved in women. Longitudinal research is warranted to elucidate the evolution, while knowledge about the disorder is needed to raise the awareness of rheumatologists and radiologists and to properly identify and report the condition. Key Points • OCI may mimic sacroiliitis and is a major differential diagnosis of radiographic axial spondyloarthritis. • Prevalence of OCI in our sample is 1.0%, in line with previous literature. • OCI predominantly affects women, and our study suggests that the disorder can be incidentally identified even after childbearing age. • Increased awareness of the characteristics of OCI can facilitate identification and reporting of the disorder.
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