Table 1.
Demographic and comorbid characteristics of patients who underwent uninstrumented posterior fusion, instrumented posterior fusion, and instrumented posterior fusion with interbody.
|
Posterior Fusion, No. (%) |
Fusion With Interbody, No. (%) |
P
Value |
||
|
Uninstrumented |
Instrumented |
Instrumented Posterior |
||
| Total | 150 (7.96) | 622 (33.01) | 1112 (59.02) | |
| Age | .001* | |||
| < 50 | 17 (11.33) | 79 (12.70) | 195 (17.54) | |
| 50–54 | 5 (3.33) | 56 (9.00) | 121 (10.88) | |
| 55–59 | 17 (11.33) | 73 (11.74) | 167 (15.02) | |
| 60–64 | 24 (16.00) | 93 (14.95) | 170 (15.29) | |
| 65–69 | 23 (15.33) | 109 (17.52) | 174 (15.65) | |
| 70–74 | 25 (16.67) | 99 (15.92) | 136 (12.23) | |
| ≥ 75 | 39 (26.00) | 113 (18.17) | 149 (13.40) | |
| Gender | .572 | |||
| Male | 52 (34.67) | 238 (38.26) | 401 (36.06) | |
| Female | 98 (65.33) | 384 (61.74) | 711 (63.94) | |
| Functional status prior to surgery | .778 | |||
| Independent | 142 (97.26) | 603 (97.73) | 1085 (98.19) | |
| Partially dependent | 4 (2.74) | 14 (2.27) | 19 (1.72) | |
| Totally dependent | 0 (0) | 0 (0.00) | 1 (0.09) | |
| Modified Charlson Comorbidity Index | .001* | |||
| 1 | 11 (7.59) | 50 (8.32) | 117 (11.13) | |
| 2 | 20 (13.79) | 106 (17.64) | 245 (23.31) | |
| 3 | 32 (22.07) | 181 (30.12) | 320 (30.45) | |
| 4 | 44 (30.34) | 176 (29.28) | 252 (23.98) | |
| ≥ 5 | 38 (26.21) | 88 (14.64) | 117 (11.13) | |
Bold rows are the median group.
*
χ2 statistically significant at P < .05.