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| − | ===Osteomalacia=== | + | ===[[Osteomalacia]]=== |
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| − | *Failure of mineralisation of osteoid / softening of the bones
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| − | *Active resorption of bone replaced by excess osteoid on trabeculae, endosteum of cortices and [[Bones - Anatomy & Physiology#Bone Remodeling|Haversian canals]]
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| − | *Decreased resistance to tension -> osteoid build-up at tendon insertions
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| − | *In advanced disease
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| − | **Bones break easily and become deformed
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| − | **Tendons may separate from bones
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| − | *Caused by prolonged phosphorus and Vitamin D deficiency
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| − | **Vitamin D maintains normal plasma levels of calcium and phosphorus through acting on the intestines, bones and kidneys
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| − | *In mature animals
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| − | *Mainly grazing ruminants following gestation and lactation
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| − | **Sunlight is important for production of vitamin D in the skin of ruminants
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| − | **Vitamin d is also present in sun-dried hay
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| − | **Mostly seen where there is long grass growing season with poor sunlight
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| − | [[Category:Bones - Metabolic Pathology]]
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