What is a Shoulder Dislocation?
The shoulder is considered the most mobile joint in the body and has the ability to move and turn in a number of directions. While this high degree of mobility is advantageous, the wide range of motion also causes the shoulder to be highly susceptible to injury. A dislocation occurs when the ball and socket within the shoulder joint separates. The dislocation creates shoulder instability and allows the ball (humeral head) to move beyond the normal constraints placed by the socket (glenoid bone) in a forward, backward and/or downward direction. Orthopedic shoulder specialist serving the Vail, Aspen, Colorado Springs and Denver, Colorado communities, Dr. Matthew Provencher is highly skilled in diagnosing and treating patients who have experienced a shoulder dislocation.
A dislocated shoulder is a common injury in athletes, especially athletes involved in football, hockey, basketball and other contact sports, as well as baseball, volleyball and tennis players who undergo repetitive arm motions.
If the shoulder dislocates, it is at an elevated risk of experiencing another dislocation. Many patients who have sustained a dislocated shoulder have weaker shoulder ligaments, thereby resulting in ongoing shoulder instability. Shoulder instability occurs when the bones, ligaments, muscles and tendons surrounding the joint do not work properly to secure the ball and socket in place.
What are Dislocated Shoulder Symptoms?
Patients who have sustained a shoulder dislocation may experience a variety of symptoms, including:
- Significant shoulder pain that may spread through the arm
- Arm numbness
- Shoulder weakness
- Deformity of the joint
- Difficulty or inability to move the arm
- A popping sensation
- Decreased range of motion
How to Know if you Have a Dislocated Shoulder
If a patient experiences a shoulder dislocation, or demonstrates severe shoulder instability, prompt medical care should be sought. Medical care will be focused on returning the shoulder joint to its original position, otherwise known as reduction. Certain patients may experience reduction naturally without medical assistance. However, for those that require reduction via medical assistance, a physician will manipulate the dislocated shoulder and place the ball back into the socket.
Once the shoulder is in its proper position, Dr. Provencher will examine the joint to assess the extent of damage. He will also perform specific tests to determine the severity of shoulder instability, such as the sulcus sign, posterior load and jerk test and the apprehension and relocation test. These tests will allow for an accurate diagnosis that will guide treatment decision-making. Aside from physical examination, an MRI and a series of x-rays may also be performed to define the extent of damage.