Table 6.

Uptake ratios and their percentage decreases compared with their initial ratios for the periods 3–6, 8–15, 22–25 months in the six zones of knee prostheses

Zone	3–6 months		8–15 months			22–25 months			p value (Kruskal-Wallis)	Post hoc analysis
	Mean	SD	Mean	SD	Decrease (%)	Mean	SD	Decrease (%)
1	2.683	0.145	4.143	0.952	54.421	1.505	0.357	−43.911	0.000241	2 > 1 > 3
2	3.370	0.228	6.673	0.956	98.047	1.838	0.478	−45.451	0.000123	2 > 1 > 3
3	3.471	0.433	6.128	1.373	76.565	1.685	0.693	−51.453	0.000123	2 > 1 > 3
4	3.239	0.446	4.843	1.483	49.542	1.828	0.267	−43.570	0.000241	2 > 1 > 3
5	1.620	0.199	2.585	0.748	59.574	1.014	0.092	−37.419	0.000324	2 > 1 > 3
6	2.951	0.385	4.291	0.774	45.424	2.223	0.448	−24.655	0.000282	2 > 1 > 3