Table 3.
Prosthetic impingement-free ROM across various component designs for 54-mm shell
| Component | Internal rotation (degrees) | External rotation (degrees) | Adduction (degrees) | Abduction (degrees) | Flexion (degrees) | Extension (degrees) |
|---|---|---|---|---|---|---|
| 28-mm hemispheric fixed bearing | 145 | 69 | 64 | 63 | 132 | 61 |
| 36-mm hemispheric fixed bearing | 151 | 75 | 67 | 66 | 136 | 67 |
| 48-mm subhemispheric dual mobility | 176 | 98 | 78 | 77 | 153 | 88 |
| 48-mm Anatomic Dual Mobility (ADM™) | 146 | 81 | 70 | 54 | 131 | 59 |
| 46-mm Modular Dual Mobility (MDM™) | 145 | 67 | 64 | 62 | 129 | 62 |
ADM™ and MDM™, Stryker Orthopaedics, Mahwah, NJ, USA.