Stener lesion
Pronunciation: STAY-ner
Displacement of the ulnar collateral ligament of the thumb over the adductor aponeurosis.
Full Definition
A Stener lesion is a specific type of gamekeeper's thumb injury where the torn ulnar collateral ligament (UCL) of the thumb metacarpophalangeal joint becomes displaced superficial to the adductor pollicis aponeurosis. This displacement prevents the ligament from healing in its proper anatomical position, creating a mechanical block to reduction. The condition requires surgical repair because the interposed aponeurosis prevents spontaneous healing. The lesion is named after Bengt Stener, who first described this anatomical variant. Clinical diagnosis can be challenging, often requiring MRI or surgical exploration for confirmation.
Usage
Usage note: Capitalize as it is an eponym named after Bengt Stener.
In Context
- "MRI findings were consistent with a Stener lesion requiring surgical repair rather than conservative treatment." — Radiology interpretation
- "Intraoperative findings confirmed a Stener lesion with the UCL displaced over the adductor aponeurosis." — Operative findings