What Causes Worsening Grasp And Pain Throughout Left Arm After Injury?

I was working two weeks ago,I am a garbageman.I was pulling a heavy container and slipped on ice.I caught myself but my left arm pulled tight and pain shot up my arm from my fingertips to my shoulder,I rotated putting ice and heat on it and the pain has got less and as long as I don t make quick moves it seemed to be getting better.The other day my left hand started cocking to the right and my grasp started getting worse.I can use the hand but it s getting more difficult.Everone at work is telling me their horror stories and it s starting to get worrisome as well as frustrating.Everyone says the same thing, You blew a tendon man,you probably need surgery. Could this be true? And what kind of specialist do you recommend me to make an appointment with?