Question

Vitamin D: 
Features of renal rickets. 
 

Hint:

In renal rickets, the bones soften and weaken due to improper calcium metabolism, leading to deformities such as bowing of the legs and slowed growth.

Answer 1

Step 1: Understanding Renal Rickets.
Renal rickets is a condition that occurs due to kidney dysfunction, which leads to disturbances in calcium and phosphate metabolism. This condition results in impaired bone mineralization, causing several skeletal abnormalities.

Step 2: Softening of Bones.
A key feature of renal rickets is the softening of bones. This happens because the body is unable to properly absorb or utilize calcium, leading to weakened bones that are more prone to deformities.

Step 3: Bowing of Legs.
Due to the softening of the bones, the legs may begin to bow under the body's weight, a classic symptom seen in children with rickets. This deformity occurs primarily in the lower limbs.

Step 4: Growth Retardation.
In renal rickets, bone growth is impaired due to insufficient mineralization. This leads to growth retardation, where the child may not grow at the normal rate for their age.

Step 5: Conclusion.
The major features of renal rickets include softening of bones, bowing of legs, and growth retardation. These features stem from the impaired calcium and phosphate metabolism that occurs due to kidney dysfunction.