shoulder pain that runs to elbow and wrist

i fell4 days ago and used my right hand to brace my self when i hit the floor. 2 days ago my shoulder started hurting pretty bad and the pain runs from shoulder to elbow then to wrist. what could i have done to my shoulder? and will physical theropy help it?

[Michael L Gross, MD]

This could be anything from a simple bruise to a fracture of the humeral head to an injury to the rotator cuff.  If rest, ice, and anti-inflammatories have not helped, I would suggest a visit to an orthopedist.