Table 2.

There were no significant differences in the horizontal/vertical distance ratio of balls between the SUS and CoCr groups. However, the ratio of vertical distance/stem subsidence was significantly smaller in the CoCr group than in the SUS group.

	SUS1			SUS2			SUS3			CoCr1			CoCr2			CoCr3			p Value
Position of Ball	Medial	Lateral	Anterior	Medial	Lateral	Anterior	Medial	Lateral	Anterior	Medial	Lateral	Anterior	Medial	Lateral	Anterior	Medial	Lateral	Anterior
Number of balls	1	1	3	1	1	3	1	1	3	1	2	2	1	1	2	1	1	2
Stem subsidence (mm)	0.36527			0.14203			0.26417			0.49105			0.54482			0.39862
Horizontal/Vertical movement of ball (A)	0.0926	0.7883	0.5541	0.0811	0.3944	0.2513	0.0244	0.6087	0.1162	0.1077	2.0332	0.1863	0.1667	0.3774	0.1130	0.0515	5.5714	0.3562
Vertical movement of ball/ Stem subsidence (B)	0.4435	0.4184	0.2378	1.0420	0.5622	0.7456	0.1552	0.0871	0.1313	0.3971	0.0697	0.1445	0.0661	0.0973	0.0631	0.2433	0.0176	0.0609
Mean ± SD (A)	0.3235 (0.2751)									0.9959 (1.8237)									0.863
Mean ± SD (B)	0.4248 (0.3184)									0.1288 (0.1199)									0.008