Bennett lesion

A posteroinferior glenoid-rim enthesophyte arising at the site of insertion of the posterior band of the inferior glenohumeral ligament complex, which is seen in athletes that use overhead throwing movements—e.g., baseball pitching, jai alai, cricket.

Associations
Posterior labral injury, posterior instability, anterior labral abnormalities. Posterior capsule and labral injuries have been reported in 36% and 86% of shoulders with posterior instability respectively.

Mechanics
Posterior impingement of the humeral head on the glenoid rim, with posterior capsular avulsion secondary to traction on the posterior band of the inferior glenohumeral complex.

Bennett,

Edward H., Irish surgeon, 1837-1907.

Bennett fracture - fracture dislocation of the first metacarpal bone at the carpometacarpal joint.

Bennett lesion

Bennett nail biopsy

Bennett posterior shoulder approach

Bennett retractor

Medical Eponyms © Farlex 2012

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References in periodicals archive

Familia does have a Bennett lesion, basically a bone spur, that he's dealt with for years and flares up occasionally.

Sports in 60 seconds

Considerable traction forces on the glenoid labrum and shoulder joint capsule can lead to superior labral lesions, including injury to the superior labrum anterior to posterior (SLAP lesion), and the Bennett lesion, a lesion peculiar to baseball players.

However, it is now known that the Bennett lesion is an extraarticular ossification of the posterior inferior capsule arising at the insertion of the capsule in the posterior inferior glenoid, unrelated to the triceps insertion.

The etiology of the Bennett lesion remains incompletely understood.

Diagnosis of a Bennett lesion is usually made with plain radiographs or CT scans.

(39.) Ferrari JD, Ferrari DA, Coumas J, Pappas AM: Posterior ossification of the shoulder: The Bennett lesion: Etiology, diagnosis, and treatment.

The shoulder in baseball pitching: biomechanics and related injuries--Part 2

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