<prompt> What is the diagnostic radiological finding in skeletal fluorosis?Sclerosis of sacroiliac jointInterosseous membrane ossificationOsteosclerosis of veebral bodyOssification of ligaments of knee joint  <response>: Skeletal fluorosis is a bone disease caused by excessive accumulation of fluoride in the bones Osteosclerosis, osteophytosis and ossification of ligamentous and fascial attachments is characteristic of fluorosis and amongst them most impoant is Interosseous membrane ossification. 