A walking frame is an intermediate solution between people who do not need a wheelchair but who do not feel comfortable moving independently or who are prescribed a support while recovering from a medical situation. A walking frame offers much more support and stability than a cane because the person in movement can rest their entire upper body on the frame if they have a discomfort or trouble balancing. A walking frame with wheels is standard and should be seen as a handy aid during recovery.
Find one of these conventional recovery devices from an online vendor if not a second hand shop near the local hospital. Not only are they cheaper than wheelchairs, but they come disassembled and delivered in a package. While assembly might be required, having a walking frame delivered by mail is both convenient and greatly increases the available options.