Which is the best initial treatment for dislocated, unrelocatable, congenitally dysplastic hips first discovered at 7 months of age?

Correct Answer: B

Rationale: At 7 months, a rigid device like the von Rosen splint is appropriate for congenital hip dysplasia to maintain reduction. Triple diapers are ineffective for unrelocatable hips; surgery is a later option.

Correct Answer: C

Rationale: Incision, drainage, and debridement are critical to remove foreign material and treat infection in a puncture wound, addressing the root cause.

Correct Answer: B

Rationale: Hypophosphatasia has low alkaline phosphatase (74), with normal or high calcium and phosphate.

Correct Answer: C

Rationale: Genu varum is commonly known as bowlegs, where the legs angle outward.

Correct Answer: D

Rationale: Subluxation of the radial head is nursemaid's elbow, common in young children.