**Question:** Commonest deformity in Rickets is

A. Bowing of long bones
B. Kevorkian facies
C. Flattening of epiphyses
D. Enlargement of epiphyses

**Core Concept:** Rickets is a disease caused by inadequate calcium and vitamin D in the body, leading to impaired bone growth and increased bone deformities.

**Why the Correct Answer is Right:** The correct answer, **A. Bowing of long bones**, refers to the characteristic deformity observed in rickets. The excessive lengthening and flattening of the bones, particularly in long bones, results in bowing. This is due to the impaired mineralization of the bone matrix caused by the deficiency of calcium and vitamin D.

**Why Each Wrong Option is Incorrect:**

**Option B. Kevorkian facies**: This refers to the facial appearance in rickets, characterized by hypoplasia of the face, particularly the mandible, and is not the primary deformity observed in rickets.

**Option C. Flattening of epiphyses**: Although epiphyseal flattening is a feature of rickets, option C does not accurately represent the primary deformity in rickets.

**Option D. Enlargement of epiphyses**: Enlargement of epiphyses is a feature of rickets but is not the primary deformity observed in rickets.

**Clinical Pearl**: It is essential to understand the key features of rickets, as they help to differentiate it from other conditions like osteomalacia, which may share some clinical symptoms but have distinct differences.

**Correct Answer:** D. Enlargement of epiphyses

In rickets, the primary deformity is not enlargement of epiphyses but the bowing of long bones (option A), as mentioned in the explanation. Enlargement of epiphyses is a secondary feature of rickets, indicating bone growth disturbances and impaired mineralization.