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Background: A loss of glenohumeral internal rotation has been associated with altered kinematics of the glenohumeral and the scapulothoracic joint. Aim of Study: To evaluate the association between Acromio-humeral distance (AHD), gleno-humeral internal rotation deficit GIRD). Methods: 40 impingement patients (from 25 to 45 years old), participated in this study,They were evaluated by ultrasonography for acromio-humeral distance(AHD), digital goniometer for gleno-humeral internal rotation deficit (GIRD). Results: This study showed a positive significant relation between gleno-humeral internal rotation difict (GIRD) and acromio-humeral distance (AHD), GIRD increase, AHD decrease. Conclusion: Glenohumeral internal rotation deficit, decrease acromiohumeral distance and lead to compression of the rotator cuff and subacromial bursa in this limited space in patients with shoulder impingement syndrome.

Relationship between Acromiohumeral Distance, and Glenohumeral Internal Rotation Deficit in Patients with Shoulder Impingement Syndrome