Bennett lesion
Pronunciation: BEN-it
Posterior glenoid rim injury in throwing athletes characterized by mineralization and ossification of the posterior capsule.
Full Definition
A Bennett lesion is a specific type of posterior shoulder injury commonly seen in throwing athletes, particularly baseball players. Named after orthopedic surgeon George Bennett, this condition involves mineralization and eventual ossification of the posterior joint capsule and labrum at the posteroinferior glenoid rim. The lesion develops as a result of repetitive microtrauma from the throwing motion, specifically during the follow-through phase when the humeral head translates posteriorly. Athletes may experience posterior shoulder pain, especially during the deceleration phase of throwing. The lesion can be identified on imaging studies and may require arthroscopic treatment in symptomatic cases.
Usage
Usage note: Eponymous lesion specific to throwing athletes; not to be confused with Bennett fracture of the thumb.
In Context
- "CT scan revealed a Bennett lesion with significant ossification along the posterior glenoid rim." — Diagnostic imaging report
- "The professional pitcher underwent arthroscopic removal of the Bennett lesion to restore throwing mechanics." — Operative summary