Shoulder Instability

What is Shoulder Instability?

The humerus (arm bone), the glenoid cavity of the scapula (shoulder blade), and clavicle (collarbone) are the bones that make up the shoulder joint. Important structures that stabilize the joint are:

• Ligaments connect bones to bones.
• Tendons connect muscles to bones.
• The glenoid labrum helps the humerus fit perfectly in the glenoid cavity.

An injury to any of these important structures can cause shoulder instability. Common injuries are rotator cuff, glenoid labrum partial and complete tears.

Common Causes:

• • A direct trauma.
  • A fall onto an outstretched arm, resulting in a dislocation.
  • Existing injuries that tear or stretch the ligaments in the shoulder.

Symptoms of Shoulder Tendonitis include:

• • A clicking or popping feeling when you move the joint
  • Pain, weakness or numbness during activities that necessitate raising your arm
  • Repeated subluxations (partial dislocations where the joint slips partially, but not completely, out of place)
  • Tenderness to the touch

Orthopedic Physicians Alaska (OPA) team of shoulder specialists take a step-by-step approach to determine the cause of shoulder instability. Key diagnostic steps include:

• • A medical history and symptom review
  • A physical examination
  • Medical imaging studies (multiple view x-rays and an MRI)

Once an official diagnosis is made, a customized treatment plan is prescribed. Treatment plans decrease symptoms as quickly as possible.

Common Treatments:

A combination of treatment options is usually prescribed to maximize symptom relief and improve shoulder function.

Surgical Treatments:

Labrum Repair