A man with multiple membrane calcification: flurosis.

A 60 years male presented with lower backache with tingling and numbness in both lower limbs for last 3 years. Later, he had pain in the neck and progressive weakness in both upper limbs for last 4 months. He had no history of bladder and bowel involvement. On examination, he had increased tone in all the four limbs with power of 4/5, bilateral absent biceps, exaggerated knee reflexes, ankle clonus with upgoing plantars. Rest of the neurological and systemic examinations were normal. Haemogram and biochemistry were normal. X-ray forearm revealed interosseous membrane calcification (Fig. 1). X-ray dorsolumbar spine showed increased bone density with calcification of the interspinous and lateral spinous ligaments. X-ray pelvis showed generalized increased bone density with calcification of sacrotuberous ligament and obturator membrane (Fig. 2). The generalized increased bone density, membranous and ligamentous calcification is diagnostic of flurosis.