Table 1.
Demographic Information
| Demographics | Arthroplasty | Fusion | ||||
|---|---|---|---|---|---|---|
|
| ||||||
| Prior Surgery | Discectomy | No Prior Surgery | Prior Surgery | Discectomy | No Prior Surgery | |
| Number of Subjects | 37 | 21 | 53 | 12 | 6 | 31 |
|
| ||||||
| Gender | ||||||
| Female | 14 (38%) | 9 (43%) | 29 (55%) | 6 (50%) | 3 (50%) | 13 (42%) |
| Male | 23 (62%) | 12 (57%) | 24 (45%) | 6 (50%) | 3 (50%) | 18 (58%) |
|
| ||||||
| Age (Years) | ||||||
| Mean (Std) | 38.4 (8.48) | 40.1 (8.64) | 41.0 (8.57) | 35.3 (5.89) | 37.8 (5.56) | 40.2 (9.28) |
| Median | 40 | 43 | 41 | 36 | 38.5 | 42 |
| Min, Max | 19, 55 | 20, 55 | 21, 60 | 25, 43 | 28, 43 | 25, 55 |
|
| ||||||
| Height (cm) | ||||||
| Mean (Std) | 175.4 (8.72) | 174.5 (9.09) | 172.5 (9.86) | 172.5 (9.71) | 173.1 (10.46) | 173.8 (8.77) |
| Median | 175.3 | 175.3 | 172.7 | 174 | 174 | 172.7 |
| Min, Max | 157, 193 | 157, 191 | 150, 191 | 155, 185 | 155, 185 | 157, 191 |
|
| ||||||
| Weight (kg) | ||||||
| Mean (Std) | 80.8 (17.73) | 79.3 (17.59) | 79.4 (14.97) | 83.1 (14.04) | 80.8 (19.31) | 81.0 (16.71) |
| Median | 81.6 | 81.2 | 80.7 | 86.2 | 86 | 77.1 |
| Min, Max | 51, 120 | 51, 120 | 52, 111 | 54, 109 | 54, 109 | 54, 118 |
|
| ||||||
| Body Mass Index | ||||||
| Mean (Std) | 26.1 (4.45) | 25.9 (4.71) | 26.6 (3.92) | 28.1 (5.13) | 27.0 (6.31) | 26.7 (4.69) |
| Median | 26.6 | 27.1 | 26.3 | 28.6 | 27.3 | 26.3 |
| Min, Max | 19, 34 | 19, 33 | 17, 37 | 19, 36 | 19, 36 | 19, 40 |
|
| ||||||
| Targeted Level | ||||||
| L4-5 | 10 (27%) | 4 (19%) | 16 (30%) | 5 (42%) | 3 (50%) | 5 (16%) |
| L5-S1 | 27 (73%) | 17 (81%) | 37 (70%) | 7 (58%) | 3 (50%) | 26 (84%) |