Suggest Treatment For Walking Difficulty

My wife aged 42, suffering not been able to walk since 4 years. I have been to many hospitals and all possible tests been carried out and all my money exhausted. She was quite energetic till the last 4 years and it started gradually, starting from the requirement of support of wall or any other objects to walk, then she wanted someone to help, it went on till she is not able to stand alone and sit without support. She get rigid and applying more power especially when get panic and anxiety. Kindly advice me what would have went wrong and what is best way to get out of this situation.