I'm only 41, but my knees sublux so frequently now I find it hard to get out of the house. I have an almost 3 y o DD who I'm scared to walk to pre-school in case I end up a crumpled heap half way and she walks away and I can't go after her. Is it stupid/ott to think of getting a wheelchair? I just keep thinking it will get better with physio, orthotics etc, but I'm almost housebound at the moment. Any advice?