A strong Heavy duty Treadmill (London Haringey)

Hi all, we are looking for a good quality strong treadmill for someone who is over weight, has arthritis in knees, needs knee replacement surgery and needs to lose weight. They don’t go out much for a number health problems. Walking was something they really loved and would love to do again. I feel if they had a treadmill they could walk in a safe space with out fear of falling. If you have one laying around to big and taking up space in your home. Please can we have it. Thank you so much for reading. Take care and have a great 2024