Anterior Shoulder Dislocation
An anterior dislocation accounts for 97% of recurrent or first time dislocations. It is the most common dislocation and is caused by the arm being positioned in an excessive amount of abduction and external rotation. In this position, the inferior glenohumeral complex serves as the primary restraint to anterior glenohumeral translation.[2] Due to a lack of ligamentous support and dynamic stabilization, the glenohumeral joint is most susceptible to dislocation in the 90 degree abduction and 90 degree external rotation.
Clinical Presentation
Anterior Dislocation
Following an acute anterior glenohumeral dislocation (Figure 5):
a. Arm held in an abducted and ER position
b. Loss of normal contour of the deltoid and acromion prominent posteriorly and laterally
c. Humeral head palpable anteriorly[2]
d. All movements limited and painful
e. Palpable fullness below the coracoid process
and towards the axilla[1]
Just to get things in perspective regarding cause and effect.
An anterior dislocation accounts for 97% of recurrent or first time dislocations. It is the most common dislocation and is caused by the arm being positioned in an excessive amount of abduction and external rotation. In this position, the inferior glenohumeral complex serves as the primary restraint to anterior glenohumeral translation.[2] Due to a lack of ligamentous support and dynamic stabilization, the glenohumeral joint is most susceptible to dislocation in the 90 degree abduction and 90 degree external rotation.
Clinical Presentation
Anterior Dislocation
Following an acute anterior glenohumeral dislocation (Figure 5):
a. Arm held in an abducted and ER position
b. Loss of normal contour of the deltoid and acromion prominent posteriorly and laterally
c. Humeral head palpable anteriorly[2]
d. All movements limited and painful
e. Palpable fullness below the coracoid process
and towards the axilla[1]
Just to get things in perspective regarding cause and effect.
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