You could do but it might not look very good. What I do is cut the limb off. I then use a piece of wire to join it back, the wire can be bent to et the angle you want and you may have to trim away some plastic to keep it in proportion. You then need to use some filler to fill the gap and this needs to be shaped to match the surrounding clothing.
Its a lot easier than it sounds. If you think you might need to do more of it, I would recommend this book if you can get hold of it.
www.amazon.co.uk/.../0897475607
I am a Norfolk man and i glory in being so
On the bench: Airfix 1/72nd Harrier GR.3/Fujimi 1/72nd Ju 87D-3