An adolescent female who is a cheerleader comes to you with a painful bump below her right knee. She denies fever or trauma. Which is the most likely diagnosis?

Correct Answer: C

Rationale: Osgood-Schlatter disease is common in active adolescents, presenting as a painful bump at the tibial tubercle due to repetitive stress on the patellar tendon insertion. No fever or trauma rules out infection or acute injury.

Correct Answer: B

Rationale: Cavus describes a high-arched foot, often associated with neurological conditions or idiopathic presentation.

Correct Answer: D

Rationale: Talipes equinovarus (clubfoot) responds to serial casting initially, aligning with option D.

Correct Answer: D

Rationale: Vitamin D deficiency rickets features low calcium, phosphate, and 25(OH)D (3), with high alkaline phosphatase.

Correct Answer: D

Rationale: Genu valgum is knock-knees, with legs angling inward at the knees.