Osteoporosis is characterized by abnormal porosity and rarefaction of bone, resulting in decreased radiodensity. Albright defined osteoporosis as: "that category of decreased bone mass where the disturbance is the failure of the osteoblast to lay down bone matrix." He further stated that "Osteoporosis is a decreased production of osteoid by the osteoblasts, and is a defect in tissue metabolism....

AIMS The aim of this study is to evaluate the clinical efficacy of computed tomography (CT)-guided radiofrequency (RF) ablation as a minimally invasive therapy for osteoid osteoma. MATERIALS AND METHODS This is a retrospective analysis of prospectively maintained data of 43 symptomatic osteoid osteoma patients who were treated by radiofrequency ablation (RFA). Forty out of 43 patients were na...

During bone remodeling, osteoblasts are known to deposit unmineralized collagenous tissue (osteoid), which mineralizes after some time lag. Some of the differentiate into osteocytes, forming a cell network within lacunocanalicular (LCN) bone. To get more insight potential role osteocytes in mineralization process osteoid, sites formation three-dimensionally imaged nine human osteons using focus...

The clinical and radiological features of 38 children with osteoid osteomas were analysed retrospectively. Twenty nine patients had lesions of the femur (n = 17) or tibia (n = 12). The mean duration from the onset of symptoms to diagnosis was 13.8 months. In seven patients the history of pain and abnormalities on examination suggested a possible neurological disorder. Fourteen of 29 patients (4...

Giant cell-rich osteosarcoma is an extremely rare variant of conventional osteosarcoma. It accounts for only 1%-3%. undifferentiated high-grade sarcoma with numerous osteoclast-like giant cells. also contains variable amount tumor osteoid. This article aims to present a case involving the right knee joint in young man.

To cite: Kenzaka T. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013010234 DESCRIPTION A 19-year-old man with no notable history had an acute episode of chest pain on the left side/back pain. Non-steroid anti-inflammatory drugs taken after consultation at another hospital were ineffective, and the pain persisted and intensified; therefore, he was referred to o...