Dr. Ebraheim’s educational animated video describing injury to the acromioclavicular joint.
Shoulder separation can be defined into three useful and practical classifications:
1-Sprain
2-Partial tear
3-Complete tear
•clavicle up
•posterior dislocation
•very high
•inferior dislocation
Dislocation of the acromioclavicular joint is different from dislocation of the shoulder joint. A dislocation of the shoulder joint involves dislocation of the glenohumeral joint.
Acromioclavicular joint separation
The cross arm test is performed with direct palpation of the joint to access swelling & pain.
Shoulder separation is almost always the result of a sudden, direct trauma to the top of the shoulder.
If the clavicle is prominent, then the injury is severe.
In mild cases, stress x-rays with 10 lb. of weight is helpful.
x-rays show unstable significant injury.
Treatment of AC joint separation is usually done with the use of a sling, ice therapy or tapping.
Surgery is considered in unstable cases.
Surgery called the Weaver-Dunn procedure reduces the clavicle to the acromion.
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