Ask a PT Response: "The information you have provided is very vague. For my patients that have shoulder instability, I would have them work on rotator cuff and scapular strengthening and stabilization exercises. There are a variety of ways to perform these exercises and some of the examples can be found on the exercise video page on CyberPT and on http://www.shoulder-pain-management.com/shoulderrotatorcuffexercises.html  Prior to performing any form of self treatment It is recommended that you seek professional and medical advise from your physical therapist or physician."