Explain about the Osteomalacia - Deficiency of Vitamin D?

It occurs when there is a lack of vitamin D and calcium, in women who have had many pregnancies, who subsist on a meagre cereal diet with little exposure to sunshine. In Osteomalacia, the following changes are seen:

1) Softening or demineralization of the bones leading to deformities of legs, spine, thorax and pelvis. As the bones soften, weight may cause bowing of the long bones, vertical shortening of the vertebrae and flattening of pelvic bone.

2) Rheumatic pain in bones of the legs and back.

3) General weakness with difficulty in walking.

4) Spontaneous multiple fractures.

5) Normal parturition difficult since sacrum convexity is increased, ribs of the iliac bone are flattened and the inlet becomes asymmetrical and narrowed.