When Does Subluxation Occur?

A shoulder subluxation occurs when the humerus partially slides in and out of place quickly (Figure 2). Shoulder dislocations occur when the humerus comes all the way out of the glenoid (Figure 3). It may fall back into place after time or may need to be put back into place with medical assistance.

How do you know if you have subluxation?

With a subluxation, you may feel the bone moving in and out of your socket. Typically, you'll experience a good deal of pain and swelling in your shoulder. You may have trouble moving your arm or hear a clicking sound when you do so. You may also feel numbness or tingling along your arm or in your fingers.

What is a subluxation episode?

In a subluxation, the humeral head slips out of the glenoid cavity as a result of weakness in the rotator cuff or a blow to the shoulder area. A subluxation can occur in one of three types: anterior (forward), posterior (backward), and inferior (downward).