For people who have suffered an injury or those who have a health condition (such as chronic osteoarthritis of the knee) which limits their mobility, a walking aid is very helpful in providing them with the required independence in walking around and being active in their daily activities. This is especially true for elderly people who lose touch with their social circle and are unable to follow their routine activities because of the inability to walk and be independent. The presence of knee arthritis, muscle weakness, and fatigue are more common in the elderly; therefore, it is an important way to ensure that they are able to continue to enjoy their life fully despite these problems.