Osteitis condensans ilii results in recurrent axial low-back pain. It mostly affects women and is found incidentally on plain X-ray by observing iliac bone sclerosis and a normal sacroiliac joint.
Osteitis condensans ilii (OCI) is a benign cause of low-back pain that is self-limiting and has an unknown etiology. It lacks pathological or clinical evidence of inflammation.
The major clinical presentation in OCI is low back pain of mechanical character that is aggravated by activity and relieved upon resting. The patients often describe the non-radicular back pain as radiating down to the posterior thighs.
Usually, the iliac bone near the sacroiliac joint is affected in a bilateral and symmetric process. OCI is predominant in women of child-bearing age. However, rare incidents of men and nulliparous women with OCI is possible. OCI may be unilateral .
The sacrum may also be involved since the changes are not always limited to the iliac bones. The joint spaces are generally normal. However, an occasional lipping, and narrowing of the lower margin or minimal irregularities may be observed. Cases have long remissions and even though the onset can be associated with pregnancy, subsequent pregnancies do not necessarily worsen the symptoms. There are no collateral and consistent systemic disturbances or physical and radiological findings .
The pregnancy-associated ligamentous laxity of the sacroiliac joint (SIJ) can result in persistent instability and sclerosis of the joint in some cases. This can later present as SIJ tenderness. The course of the disease is chronic and it may relapse.Therefore, OCI should be differentiated from other inflammatory or non-inflammatory disorders of the sacroiliac joint  .
Entire Body System
- Weight Loss
Should weight gain become a problem later on, institute more systematic, supervised efforts (for example, weight loss programs and formal exercise classes). Smoking cessation is not an all-ornothing phenomenon. [consultant360.com]
weight loss, malaise, and chills) . Pregnant patients may complain of axial low back pain in the final trimester or immediately after delivery; the pain may be recurrent with subsequent pregnancies . [file.scirp.org]
She denied any weight loss. Physical examination was normal. Faber’s /Patrick’s test (flexion, abduction, external rotation of hip) was non-revealing. Straight leg raising test and Schober’s test were normal. [cureus.com]
Systemic symptoms such as fever, fatigue, weakness, and weight loss are absent, and for this reason, a detailed history and complete review of systems should be obtained to exclude other processes. [ncbi.nlm.nih.gov]
- Localized Pain
Radiating pain was the first to improve abruptly after surgery, followed by gradual simultaneous amelioration of local pain and stiffness. [ncbi.nlm.nih.gov]
- Wound Infection
The non-operated asymptomatic side had spontaneous remodelling There were no substantial complications among the studied cases; however, two overweight cases had superficial wound infections. [ncbi.nlm.nih.gov]
It does not fall definitely within the category of any of the known bone diseases or affections, but the type of lesion in the region of the nutrient foramen suggests a low-grade inflammatory nature. [journals.lww.com]
- Coarctation of the Aorta
See other definitions of OCI Samples in periodicals archive: Various developmental malformations have been reported to be associated with osteopoikilosis, including: coarctation of the aorta, double ureter, pubertas praecox, urogenital defects, growth [acronymfinder.com]
Among the numerous causes, we must not forget to consider OCI, especially in female patients during the fertile decades. [ncbi.nlm.nih.gov]
Almost half of patients (49%) had a head tremor, which was mostly mild. Of those patients with tremor, 52% had occasional tremor and 48% had continuous tremor. [kundoc.com]
The diagnostic criteria of OCI includes  :
- Unilateral or more commonly bilateral
- Sclerosis of the lower margin of the iliac bone and a normal sacroiliac joint on radiological imaging
- Predominance in females
- Normal inflammatory parameters
- Negative HLA-B27 antigen
- Normal bone scan
- Absence of bone erosion or destruction
In addition, a thorough history and physical examination can help differentiate OCI from ankylosing spondylitis, sacroiliitis, seronegative spondyloarthropathies, primary hyperparathyroidism, renal osteodystrophy, Paget's disease, bone secondaries and lymphoma     . Normal blood tests and seronegativity can exclude most of these conditions.
The radiographical appearance of OCI is described as a well defined triangular sclerosis of the iliac bone in the sacroiliac joint. Eburnation can be observed in the inferior part of the bone. Sclerosis can extend to the auricular portion of the iliac bone. Unlike other forms of sacroiliitis, the joint space is not obliterated in OCI and the articular margins remain intact. The radiological features of OCI can resolve over time .
In a small group of patients affected with OCI, polyarthralgia in the peripheral joints has been reported. However, significant inflammatory articular changes are usually absent.
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