hello folks, wondering if someone could help.

a while a go i injured my neck which resulted in me having pain on the top of my left scapula which sent pain and pins and needles down my left arm all the way tomy fingers.
it also caused muscle weakness on my left side that means i can't bench or press heavy as my arm shakes and can't take the load.

i am seeing a physio who has me doing static contraction exercises and doing tissue massage via placing a ball under my shoulder and rolling around on it.

any more help would be appreciated