Prevalence of the Bennett lesion of the shoulder in major league pitchers.
ABSTRACT The Bennett lesion is a mineralization of the posterior inferior glenoid noted in overhead throwing athletes. Although previous studies have debated appropriate treatment of the lesion, no studies have indicated the lesion prevalence in throwing athletes.
The Bennett lesion is more common than previously believed and may represent an asymptomatic finding.
Uncontrolled retrospective review.
Fifty-five asymptomatic major league pitchers underwent routine preseason radiographic screening. Radiographs were reviewed for the presence of a Bennett's lesion. Player demographics, pitching, and baseball records were reviewed to obtain the patient's dominant arm, age, years and innings pitched, and time on the disabled list or surgery.
Twelve pitchers (22%) were noted to have a radiographic Bennett lesion. No statistically significant difference was noted in age, years pitched, or innings pitched between pitchers with and without a Bennett lesion. No player who demonstrated a Bennett lesion required surgical treatment for shoulder pain during his time with the club. Two players required time on the disabled list, but neither player had complaints of posterior shoulder pain.
This lesion is a relatively common finding in major league pitchers. Concomitant pathology should be suspected when evaluating throwers with posterior shoulder pain and this lesion.
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ABSTRACT: The term "internal impingement" describes the normal physiological contact that occurs between the posterosuperior glenoid and the greater tuberosity in positions of hyperabduction and external rotation. This physiological contact can become symptomatic when repeated overhead motion results in partial articular-sided posterosuperior rotator cuff tears and lesions of the posterosuperior glenoid labrum. The precise pathophysiology involved with the development of symptomatic internal impingement has been debated extensively over the past few decades. However, current literature suggests that symptomatic internal impingement may result from a combination of multiple factors involving repetitive overhead activity, physiological remodeling of the throwing shoulder, posterior capsule contracture, and scapular dyskinesis, among other factors. These can all lead to scapulohumeral hyperangulation and associated pathologic findings. The purpose of this article is to review the relevant anatomy, pathophysiology, diagnosis, and management of symptomatic internal impingement through a critical review of current evidence.Sports medicine and arthroscopy review 06/2014; 22(2):120-129. · 1.16 Impact Factor
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