HSS Ultrasound of the Month Case 110

Clinical History 71 year old male with dorsal lateral wrist pain radiating into the hand.

Ultrasound of the Month – Case 110

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Diagnosis: Intersection Syndrome Intersection syndrome is an overuse disorder resulting in pain along the dorsal aspect of the distal forearm and wrist.

Chronic friction at the site of crossover of the extensor tendons causes tendinosis and tenosynovitis.

Intersection syndrome can occur at either of two sites: where the first dorsal compartment tendons cross over the second dorsal compartment tendons (“proximal intersection”) or where the third dorsal compartment tendon crosses over the second compartment (“distal intersection”).

The current case is an example of distal intersection syndrome.

Treatment starts with conservative treatment, including splinting and cortisone injection into the tendon sheaths of the affected tendons.

Surgical release maybe indicated if conservative management fails.

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