What is a Shoulder Sprain?
The shoulder is a ball-and-socket joint that consists of several interconnected parts. The acromioclavicular (AC) joint connects the upper part of the shoulder blade to the collarbone or clavicle. The glenohumeral joint connects the shoulder socket, or glenoid, which extends from the shoulder blade to the arm bone, or humerus. The shoulders flexibility can make it prone to injury. This often happens when stress is placed on the tissues that stabilize the shoulder. There are many types of shoulder sprains:
Grade 1: the ligaments of the AC joint stretch or partial tear, but the bones don’t separate. Mild pain and swelling may interfere with normal daily activities.
Grade 2: ligaments tear, causing pain and swelling.
Grade 3: In a Grade 3 sprain, the AC joint becomes completely separated. This leads to bruising, pain, and swelling that can prevent you from performing your usual activities. The dislocated collarbone usually appears as a bump on the shoulder.
Grades 4, 5, and 6: sprains are more severe and less common. In these injuries, ligaments tear, the AC joint separates, and muscles detach from the collarbone.
OPA Shoulder Team
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