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Home/Upper Extremities/Fuzzy X-Ray? A New Clue for Nerve Injuries in Pediatric Elbows
Upper Extremities Premium

Fuzzy X-Ray? A New Clue for Nerve Injuries in Pediatric Elbows

August 29, 2025 1 min read Premium comments

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Fuzzy X-Ray? A New Clue for Nerve Injuries in Pediatric Elbows
Lateral elbow X-ray showing a supracondylar humeral fracture with a marked line illustrating the “Blurred Boundary” (BB) sign used in the study / Source: Wikimedia Commons
StudiesPremiumBlurred Boundaryelbow traumanerve injurypediatric orthopedicssupracondylar humeral fracturex-ray

Orthopedic surgeons know that kids don’t always read the script when it comes to injury exams. Ask a 7-year-old with a supracondylar humerus fracture to wiggle their fingers, and you might get a shrug, a giggle, or a tearful “no.” Meanwhile, lurking beneath the cast of cartoons on their T-shirt could be a hidden nerve injury you’d really like to catch before heading to the OR.

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