Some people do find that when they have screws implanted it affects sensitivity in the area. Sometimes people get the metalware taken out (once it's done its job), and some feel better for it. Another possibility is that it's caused by the build up of scar tissue from the injury and operation - in some instances massage can help to make the scar tissue more pliable and less sensitive. Obviously, though, this needs to be handled with care. Finally, it could be that the operation affected the nerves in the area. It's hard to say without seeing you for myself which of these is most likely.
Sorry to be vague, but hope this helps a little.
Thanks alot for the feedback ,really appreciate it :-)