A traumatic limb pain

FRCEM EXAM QuestionsCategory: March 2017A traumatic limb pain
FRCEM Intermediate Staff asked 10 months ago

An 11-year-old boy presents with his parents to the ED having developed a limp over the last week.

A. What is the X-ray view? What is the abnormality in X-ray? (1mark)
B. Name and describe the radiological sign associated with this abnormality? What is the most complication? (1 mark)
C. Give (2) differential diagnosis? (1 mark)

1 Answers
FRCEM Intermediate Staff answered 10 months ago

A.
Frog lateral
Slipped Upper Femoral Epiphysis

B.
Trethowan sign: Klein’s line along sup. border of the femoral neck should intersect femoral head

complications
AVN (avascular necrosis) of the femoral head
Degenerative hip arthritis
deformity
limb length discrepancy

C.
Legg-Calve-Perthes disease
septic arthritis
transient synovitis
developmental dysplasia