**Core Concept**
The clinical presentation suggests a hip disorder, likely related to **Perthes disease** or **Slipped Capital Femoral Epiphysis (SCFE)**, given the age and symptoms of the patient. The restriction in abduction and internal rotation, along with the specific gait abnormality, points towards a condition affecting the hip joint.

**Why the Correct Answer is Right**
Given the age of the patient and the specific symptoms such as a painless limp, restriction in abduction and internal rotation, and the characteristic movement of the knee towards the axilla upon hip flexion, **Slipped Capital Femoral Epiphysis (SCFE)** is a strong consideration. SCFE is characterized by the displacement of the femoral epiphysis from the femoral neck through the physeal plate, leading to these specific clinical findings.

**Why Each Wrong Option is Incorrect**
**Option A:** Would be incorrect as it doesn't match the specific clinical scenario described.
**Option B:** Might be considered for other hip pathologies but doesn't fit the specific pattern of restricted movements and gait abnormality seen in SCFE.
**Option C:** Could be a possibility in other hip conditions but doesn't align with the described clinical presentation.

**Clinical Pearl / High-Yield Fact**
Remember, SCFE typically presents in early adolescence with a painless limp and specific restrictions in hip movement. The condition requires prompt diagnosis and treatment to prevent long-term complications such as osteoarthritis.

**Correct Answer:** D. Slipped Capital Femoral Epiphysis (SCFE)