ATI RN
Pediatric Musculoskeletal Disorders Questions
Question 1 of 5
Ultrasound is used for initial evaluation of infants with DDH. To avoid confusion with physiologic laxity, ultrasound should be obtained after the of age
Correct Answer: C
Rationale: Ultrasound after 6 weeks avoids false positives from physiologic laxity present in newborns.
Question 2 of 5
Polydactyly (extra toes) is usually found on the initial newborn physical examination. It may be associated with the following malformation syndrome
Correct Answer: D
Rationale: Rubinstein-Taybi syndrome is associated with polydactyly, among other features like broad thumbs.
Question 3 of 5
An adolescent athlete complains of an insidious onset of low back pain persisting over 6 weeks. The pain tends to worsen with activity and with extension of the back and improves with rest, the pain radiated to the buttocks. Of the following, the MOST likely cause is
Correct Answer: D
Rationale: Spondylolisthesis fits the chronic, activity-related back pain with radiation and extension aggravation in adolescents.
Question 4 of 5
Matching: Fatigable weakness
Correct Answer: C
Rationale: Fatigable weakness is classic for neuromuscular junction defects (e.g., myasthenia gravis), worsening with activity. Other conditions don't exhibit this pattern.
Question 5 of 5
Which is not true of congenital neuromuscular disorders?
Correct Answer: C
Rationale: Congenital neuromuscular disorders vary; EMG helps but isn't always definitive (genetic testing often is), making C false. Most are hereditary, some are nonprogressive, and hypotonia is common.