This condition is an injury to the joint at the top of the shoulder, where the acromion meets the clavicle. This is called the acromioclavicular (or AC) joint. In shoulder separation the ligaments that hold these bones together are partially or completely torn, allowing the bones to separate.
This shoulder condition is caused by a trauma to the shoulder, such as a fall with an outstretched arm.
Shoulder separation symptoms can include pain, swelling, bruising and loss of range of motion in the arm. In some cases, the shifting of the bones may form a visible bump on the shoulder.
Treatment options may include rest, anti-inflammatory medication, a sling and a physical therapy. In severe cases, shoulder surgery may be necessary to repair the joint.