Mum now needs a wheelchair to go any distance as her knees won't support her for more than a minute or two. I've been pushing her around town in a basic one which she bought for her husband years ago but I'm beginning to think it's not ideal. The other day I took her out for half and hour and strained my arm pushing up and down steep slopes. Today I took her Christmas shopping. She's very heavy and with a rucksack full of shopping slung on the back of the chair as well, and more on her lap, the arm is now worse and I have pains shooting down it as I type. She has a mobility scooter but can't really remember how it works so I wouldn't risk taking her into shops with it. I'm no weakling and have pushed my mother-in-law around for years with no problems but think I need something else for Mum. Any suggestions welcome.