Diffuse idiopathic skeletal hyperostosis (DISH) is a skeletal disease characterized by ligamentous ossification of the anterolateral side of the spine. The radiographs of the spine of 69 patients (22 males, 47 females, mean age 64.97 ± 8.83 years) affected by DISH according to Resnick's criteria were selected. A lower rate of lumbar spine involvement (71%) and a different distribution between sexes were demonstrated, as compared to the data from the literature. Data on relationships among extent of hyperostosis, occupation and metabolic disorders suggest that an important role might be played by the exposure to microtrauma, while, in subjects affected by a metabolic disorder, this condition would represent a prevalent pathogenetic factor. These data underline some peculiarities in the clinical picture of DISH in the population from Campania, that could depend on genetic factors.
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