What can I do to improve my rotator cuff without surgery?

Physical therapy. Many cases of rotator cuff tendinitis and small partial tears respond very well to physical therapy in addition to various types of injection therapy.
Rotator cuff therap. Check this site for exercies http://familydoctor.Org/familydoctor/en/prevention-wellness/exercise-fitness/injury-rehab/rotator-cuff-exercises.Html. Or http://www.Moore-chiropractic.Com/rotator-cuff-injury.Html or video: http://www.Google.Com/url?Sa=t&rct=j&q=rotator%20cuff%20exercises%20on%20the%20wall&source=web&cd=3&ved=0ce4qtwiwag&url=http%3a%2f%2fwww.Youtube.Com%2fwatch%3fv%3dznwudlflero&ei=.