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.