Hi fellow angel mum,
MANY angelman children ARE able to walk , in fact some can even jump and run. Those that struggle with walking do so for many different reasons, eg. balance issues, muscular tension/looseness, and also sometimes problems with vision/depth perception. Very few dont walk at all. 2 is still very young, as many AS kids continue to learn to walk till as late at 6. Has your son crawled yet? There is a great international listserve/forum for the angelman community where many more folk can respond to your questions on a daily basis. My son is 15 years old and is one of the few who has skeletal issues - so he has had 2 orthotic operations, to help improve his gait. Hope this helps.