Odds are that sometime in your life time you will be challenged with buying or using a mobility aid product. Thanks to my discussion with medical products provider Majesty Health, I was able to prepare this very helpful article on self propelled wheelchairs, electric wheelchairs, and mobility aids scooters. Knowing the big difference between these units is very important if you are planning a purchase so ideally this article will be very helpful. The two major types of manual wheelchairs are fold-up frame wheelchairs and rigid frame wheelchairs.