Ultrasound Features of Intersection Syndrome at the Forearm

Intersection syndrome is a friction tenosynovitis where the first extensor compartment crosses the second, 4–8 cm proximal to Lister's tubercle. This video reviews its ultrasound appearance.

• Intersection syndrome is an overuse tenosynovitis from repetitive friction where the first extensor compartment (EPB, APL) crosses the second (ECRB, ECRL).
• The proximal intersection occurs 4–8 cm proximal to Lister's tubercle at the musculotendinous junctions.
• This educational video demonstrates the ultrasound appearance and diagnostic criteria.

RadPigeon summaries are original and for information only. They are not clinical advice.