Research Article
Multicriteria Decision Analysis in Improving Quality of Design in Femoral Component of Knee Prostheses: Influence of Interface Geometry and Material
Table 7
House of quality including requirements, engineering characteristics, and obtained weights.
| | Degree of importance | Engineering characteristics (How) | | | | | | | | | Stress level in femur (A) | Nonuniformity of stress distribution in femur (B) | Displacement at bone-implant interface (C) | Stress level at femoral corner points (F) | Stress level in peg (D) | Mass (E) | Biocompatibility (G) | Hardness (H) |
| Prioritized customer Requirements (what) | | | | | | | | | | Req1 | 2 | | | | | | ● | | | Req2 | 3 | | | | ⊙ | ● | | | | Req3 | 5 | | | | | | ◯ | ● | | Req4 | 4 | | | ● | | | | | | Req5 | 4 | ● |
⊙ | | | | | | | Req6 | 4 | | | | | | | | ● | Absolute weight | 36 | 28 | 36 | 21 | 27 | 43 | 45 | 36 | Relative weight for design selection criteria (input for Tables 8 and 9) | 0.19 | 0.15 | 0.19 | 0.11 | 0.14 | 0.23 | — | — | Relative weight for material and design selection criteria (input for Table 10) | 0.13 | 0.10 | 0.13 | 0.08 | 0.10 | 0.16 | 0.17 | 0.13 | | Prioritized technical descriptors |
|
|
+9 ● strong. +7 ⊙ moderate. +5 ◯ weak.
|