How To Treat Elbow Pain?

I crushed a nerve and tore tendents in my elbow and forarm. I had sergery on it 14/12/2010 and am due to go back to work this week, when ever I try to grip I get a shoting pain up forarm and into elbow. It does not hurt to touch a little tender around elbow. But when I grip it can fell like I have broken my arm.