Elderly Mobility Aids are so named because they are commonly used by people later in life. This does not mean that they are the only ones using them.
Walking aids can also be used by anyone following injury or surgery. Crutches are a common example and they are often followed by a walking cane as the condition improves.
Medical conditions that cause weakness or loss of balance can also require the use of an aid.
"Elderly Mobility Aids" can therefore be a misleading term but still one commonly used.