Does not detract from normal mobility device function |
Rigid |
Strong |
Lightweight |
Adjustable |
Simple mechanism |
Few components |
No sharp edges or pinch points |
Fail-safe mechanism |
Readily available or easy to manufacture components |
Corrosion resistant |
User importance rank |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Provide walking stability | x |
x |
x |
x |
1 |
|||||||
| Take weight off legs | x |
x |
x |
x |
4 |
|||||||
| Not heavy | x |
x |
7 |
|||||||||
| Fits the user/ergonomic | x |
x |
3 |
|||||||||
| Easy to adjust | x |
x |
x |
5 |
||||||||
| Quick to use | x |
x |
6 |
|||||||||
| Intuitive to use | x |
x |
x |
11 |
||||||||
| Safe | x |
x |
x |
x |
x |
x |
x |
2 |
||||
| Affordable | x |
x |
x |
x |
10 |
|||||||
| Durable | x |
x |
x |
x |
x |
8 |
||||||
| Easy to make | x |
x |
12 |
|||||||||
| Weather-proof | x |
x |
9 |
|||||||||
| This table is a quality function deployment (QFD) diagram which has general crutch requirements on the left and design specifications along the top. The far right column has the user importance rank, where 1 is the highest priority. | ||||||||||||