Broken Shoulder Blade
Broken Shoulder Blade Overview
The scapula or shoulder blade is a bony structure found on the upper back that connects the upper arm to the chest wall (thorax). It also forms the socket part of the shoulder joint connecting the upper arm (humerus) to the socket (glenoid). The acromion and coracoid processes are bony bumps found on the upper part of the scapula, and they function to connect the scapula to the collarbone. The scapula is surrounded by thick layers of muscle that are responsible for the smooth movement of the shoulder joint.
- The shoulder blade (scapula) is rarely broken (broken bones are also called fractures). Of all bone breaks, shoulder blade breaks occur less than 1% of the time.
- Scapular fractures occur more often in young men ages 25 to 45 because of the activities and trauma they encounter. These occur with athletic activities, motor vehicle accidents, and other forms of blunt trauma.
- Broken shoulder blades are often caused by heavy forces that might also include severe injuries to the chest, lungs, and internal organs.
- Fractures (breaks) have been reported at many areas along the scapula.
Broken Shoulder Blade Causes
Scapular fractures are caused by direct trauma involving a large amount of force or violence. Associated injuries to chest wall, lungs, and shoulder occur in up to 80% of people with broken shoulder blades. Common causes of broken shoulder blades include the following:
- Motor vehicle accidents
- Falls with direct trauma to the shoulder
- Falls onto an outstretched arm
- Direct trauma such as from a baseball bat or hammer
Broken Shoulder Blade Symptoms
Pain, swelling, and bruising may occur over the shoulder blade in the upper back or on the top of the shoulder overlying the coracoid and acromion processes.
Other signs of a broken shoulder blade may include:
- Holding the injured arm close to the body
- Moving the arm increases the pain
- Inability to lift the arm
- Having pain with each deep breath due to movement of the chest wall with each breath; this movement may in turn move the shoulder blade, causing pain.
- Shoulder appears flattened or deformed