Table 1.
Impact characteristics in different experimental groups.
| Phase 1 | PIPE: 44cm | ||||||||||
| Mean | CV (%) | ||||||||||
| SCI # | 1 | 2 | 3 | 4 | |||||||
| Force (N) | 20.2 | 29.5 | 29.4 | 57.3 | 34.1 | 47.1 | |||||
| PIPE: 24cm | |||||||||||
| Mean | CV (%) | ||||||||||
| SCI # | 5 | 6 | 7 | 8 | |||||||
| Force (N) | 19.1 | 5.2 | 12 | 27.6 | 16 | 60.1 | |||||
| Phase 2 | SPRING-LOAD + EXTERNAL LATERAL SUPPORT | ||||||||||
| Mean | CV (%) | ||||||||||
| SCI # | 9 | 10 | 11 | ||||||||
| Force (N) | 62.4 | 53.8 | 23.2 | 46.5 | 44.3 | ||||||
| SPRING-LOAD + SPINAL CORD SUPPORT + FUSION + SUSPENSION OF VERTEBRAL COLUMN | |||||||||||
| Mean | CV (%) | ||||||||||
| SCI # | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | |||
| Force (N) | 49.8 | 39.6 | 44.2 | 53.6 | 41.5 | 42.5 | 50.8 | 45.1 | 45.9 | 10.8 | |
| Displacement (mm) | 7.1 | 6.5 | 7 | 9.2 | 6.2 | 7.2 | 6.9 | 7.4 | 7.2 | 12.4 | |
| Speed (m/s) | 1.4 | 1.2 | 1.8 | 1.7 | 1.5 | 1.4 | 1.4 | 1 | 1.4 | 18.2 | |
| Duration (ms) | 8.5 | 8.8 | 9 | 10 | 10.3 | 8.8 | 8.5 | 8.5 | 9 | 7.8 | |
| Static force (N) | 17.6 | 20.2 | 18.6 | 10.8 | 15.6 | 16.5 | 14.3 | 14.5 | 16 | 18.1 | |
Note that one additional pig was injured with the 34-cm pipe resulting in a 20.4 N impact.