Table 1.
Compressive mechanical properties for PMMA bone cement with various additives are shown. VA-2 composite properties are very similar to those of PMMA. Species with PEG functionalities lead to mechanical property compromise
| Material | Compressive modulus (MPa) | Yield strength (MPa) | Resilience (J/cm3) | Fracture strength (MPa) | Strain at fracture (%) |
|---|---|---|---|---|---|
| PMMA | 25 ± 1 (100%) | 85 ± 3 (100%) | 3.0 ± 0.2 (100%) | 96 ± 13 (100%) | 31 ± 7 (100%) |
| Vancomycin 10wt% | 20 ± 1 (80%) | 71 ± 2 (84%) | 2.5 ± 0.3 (83%) | 57 ± 5 (59%) | 20 ± 3 (65%) |
| VA-2 10wt% | 28.2 ± 0.4 (113%) | 87 ± 1 (102%) | 2.8 ± 0.3 (93%) | 90 ± 2 (94%) | 31 ± 3 (100%) |
| VPA(3400) 10wt% | 16 ± 3 (64%) | 53 ± 2 (62%) | 1.7 ± 0.2 (57%) | 76 ± 8 (79%)* | 34 ± 2 (110%)* |
| PEG(3000)-Acrl 5wt% | 20.7 ± 0.5 (83%) | 59 ± 2 (69%) | 1.9 ± 0.1 (63%) | 72 ± 6 (75%)* | 33 ± 3 (106%)* |
| PEG(3000)-Acrl 10wt% | 15 ± 1 (60%) | 44 ± 4 (52%) | 1.4 ± 0.2 (47%) | 50 ± 7 (52%)* | 27 ± 6 (87%)* |
Asterisks indicate materials with potential microcracking.