Kinematic shoulder MRI: the diagnostic value in acute shoulder dislocations.

Abstract:

OBJECTIVES:To determine whether positioning of the arm in adduction and internal rotation would improve the confidence in the diagnosis of Bankart lesions in first time shoulder dislocators. METHODS:Eleven patients were imaged on an open bore MRI within 1-6 days of traumatic shoulder dislocation with the arm adducted and internally rotated, and subsequently the patients were reimaged with the arm adduced and externally rotated. Two blinded musculoskeletal radiologists determined the confidence of diagnosing labral tears in each of the two positions. RESULTS:An anterior-inferior labral tear was diagnosed in 11/11 patients in internal rotation and in 6/11 patients in external rotation. The average confidence was 2.8 in internal rotation and 1.5 in external rotation (on a scale of 0-3). Using a Wilcoxon signed rank test, the certainty of the diagnosis was determined to be significantly higher with the arm in internal rotation (P = 0.016). CONCLUSIONS:MRI performed with the arm in internal rotation for patients with acute first time anterior shoulder dislocation increases the certainty of the diagnosis of anterior-inferior labral tears.

journal_name

Eur Radiol

journal_title

European radiology

authors

Marcus M,Malhotra A,Peri M,Schweitzer M,Vladislav O,Tenebaum S,Shabshin N

doi

10.1007/s00330-012-2655-3

subject

Has Abstract

pub_date

2013-03-01 00:00:00

pages

855-60

issue

3

eissn

0938-7994

issn

1432-1084

journal_volume

23

pub_type

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