. 2014 Jan 24;472(5):1535–1544. doi: 10.1007/s11999-014-3469-1

Table 4.

Statistical comparison of the prosthetic impingement-free ROM between various component designs*

Component	28-mm hemispheric fixed bearing	36-mm hemispheric fixed bearing	48-mm subhemispheric dual mobility	48-mm anatomic dual mobility	46-mm modular dual mobility
28-mm hemispheric fixed bearing	N/A
36-mm hemispheric fixed bearing	p < 0.001; R² = 0.9295% CI, −6.2 to 3.1	N/A
48-mm subhemispheric dual mobility	p < 0.001; R² = 0.91; 95% CI, −30.5 to −14.8	p < 0.001; R² = 0.91; 95% CI, −24.3 to −11.7	N/A
48-mm Anatomic Dual Mobility (ADM™)	p = 0.71; R² = 0.03; 95% CI, −8.7 to 6.3	p = 0.3; R² = 0.24; 95% CI, −3.6 to 10.6	p = 0.001; R² = 0.89; 95% CI, 12.9–30.1	N/A
46-mm modular dual mobility (MDM™)	p = 0.22; R² = 0.3; 95% CI, −0.7 to 2.3	p < 0.001; R² = 0.91; 95% CI, 3.54–7.46	p < 0.001; R² = 0.92; 95% CI, 15.6–31.3	p = 0.55; R² = 0.1; 95% CI, −5.9 to 9.9	N/A

* Paired 2-tailed t-test; N/A = not available; ADM™ and MDM™, Stryker Orthopaedics, Mahwah, NJ, USA.