**Question:** A 3-month-old child presents with intermittent strider. Most likely cause is –

A. Congenital hip dislocation
B. Congenital muscular dystrophy
C. Birth trauma to the lower limbs
D. Hemiplegia

**Correct Answer:**

**Core Concept:**

The intermittent strider in a 3-month-old child is a clinical presentation that requires careful evaluation for potential underlying etiologies. In this context, "strider" refers to the child's difficulty in walking, which is intermittent rather than persistent. This age group is crucial to identify potential developmental or pathological issues early on. In this scenario, the focus is on evaluating the child for congenital causes.

**Why the Correct Answer is Right:**

The correct answer is **Option C: Birth trauma to the lower limbs**. This answer considers the most probable cause in a 3-month-old child, which is within the neonatal period. Birth trauma, particularly during forceps delivery or breech presentation, can lead to soft tissue injuries, joint laxity, and muscle weakness, causing intermittent strider.

**Why Each Wrong Option is Incorrect:**

A. **Congenital hip dislocation (Option A)** and B. **Congenital muscular dystrophy (Option B)** are less likely in a 3-month-old child, as these conditions typically present earlier in life. Hip dysplasia usually manifests within the first few weeks of life, and muscular dystrophy would be apparent at birth or during the first months of life.

C. **Birth trauma (Option C)** is the most plausible cause in a 3-month-old child, as it presents within the neonatal period and may lead to intermittent strider.

D. **Hemiplegia (Option D)** is an adult neurological condition, affecting one side of the body. It is unlikely in a 3-month-old child and does not explain the intermittent strider symptom.

**Clinical Pearl:**

In cases of intermittent strider in a 3-month-old child, a detailed history and physical examination are essential to identify potential birth trauma or developmental delays. A prompt referral to a pediatrician or orthopedic specialist is recommended to confirm or rule out the suspected cause and initiate appropriate management. Early recognition and intervention are crucial for optimal outcomes in these cases.