Mobility aids help you walk or move from place to place if you are disabled or have an injury. They include crutches, canes, walkers, wheelchairs and motorized scooters. You may need a walker or cane if you are at risk of falling. If you need to keep your body weight off your foot, ankle or knee, you may need crutches. You may need a wheelchair or a scooter if an injury or disease has left you unable to walk. Choosing these devices takes time and research. You should be fitted for crutches, canes and walkers. If they fit, these devices give you support, but if they don’t fit, they can be uncomfortable and unsafe. Talk with your doctor or with a medical-equipment provider (which your doctor can recommend) when choosing mobility aids.
— Source: National Institutes of Health