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Renal osteodystrophy is a bone pathology, characterized by defective mineralization, that results from renal disease. renal - refers to kidney, osteo - refers to bone, and dystrophy - means degenerative disorder (like dystrophy in muscular dystrophy).
There are different forms of renal osteodystrophy. Renal osteodystrophy that is characterized by high bone turnover, and renal osteodystrophy that is characterized by low bone turnover.
Additional recommended knowledge
Signs and symptoms
Usually diagnosed after treatment for end-stage renal disease (ESRD) begins.
Can be recognized on X-ray (but may be difficult to differentiate from other conditions). Features on X-ray:
The mineral content of bone is calcium hydroxyapatite, Ca5(PO4)3(OH). When calcium is being actively resorbed from bone, the phosphate also enters the blood stream. The kidney is the primary means of excreting excess phosphate. Renal osteodystrophy results from an abnormally elevated serum phosphate (hyperphosphatemia) and low serum calcium (hypocalcemia), both of which are due to decreased excretion of phosphate by the damaged kidney, low vitamin D levels or tertiary hyperparathyroidism (a dysfunction of the parathyroid gland due to constant stimulation).
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Renal_osteodystrophy". A list of authors is available in Wikipedia.|