I've got 0.5cm tear on my rotator cuff according to x-ray & ultrasound results. local gp said it would heal in time. still a bit of pain after 3 mths.?

Yes: You likely have inflammation and scarring. Physical therapy and stretching may help. By age 65, about half of us will have rotator cuff tears. http://www.howardluksmd.com/shoulder-faq/how-do-i-know-if-i-have-a-full-thickness-rotator-cuff-tear/.

Multiple Options: Unfortunately the size of the tear per ultrasound is not correlated with the level of symptoms and pain. If you are having persistent problems consider a referral to a shoulder specialist to review a detailed plan for you specifically. Learn more about rotator cuff here: http://theshouldercenter.Com/rotator-cuff-tear.Htm.