Quote Originally Posted by ramanth
Your correct Angie. They have not told us what happened to cause Locke to be in the wheelchair in the first place.

And then something happened on the island (I can't recall if he hurt himself or lost faith in the island) to make him lose control of his legs again, but then later he regained the mobility.
I think your right about him loosing faith in the Island that made him use the chair again.