Table 1.
Comparison of the clinical and radiological data between the study groups
| Complication (+) Group 1 n = 7 | Complication (−) Group 2 N = 8 | |
|---|---|---|
| Diagnosis | ||
| Degenerative scoliosis | 4 | 6 |
| Degenerative kyphosis | 3 | 2 |
| Age (yr), mean (range) | 71.4 (57–80) | 72.1 (65–77) |
| Sex | ||
| Male | 3 | 1 |
| Female | 4 | 7 |
| BMI-mean (range) | 22.4 (19.8–26.7) | 23.5 (20.7–30.2) |
| Number of previous spinal surgeries | 0.4 (0–2) | 0.3 (0–1) |
| Levels fused | 4.5 (3–6) | 4.3 (3–8) |
| Rate of number of levels with TLIF (%) | 71 (25–100) | 72 (50–100) |
| UIV | ||
| Th10 | 0 | 1 |
| Th11 | 0 | 1 |
| Th12 | 2 | 0 |
| L1 | 1 | 1 |
| L2 | 4 | 3 |
| L3 | 0 | 2 |
| LIV | ||
| L5 | 3 | 5 |
| S1 | 4 | 3 |
| Preoperative JOA, mean (range) | 13.1 (10–18) | 13.8 (10–19)† |
| Postoperative JOA, mean (range) | 13 (10–21)* | 20.6 (17–26)*,† |
| Revision surgery (post-index surgery) | n = 4 | n = 0 |
| Length of follow-up (mo)- mean (range) | 16.9 (5–40) | 21.6 (14–33) |
*,†
P < 0.05. BMI: body mass index, JOA: Japan Orthopedic Association, LIV: lower instrumented vertebra, TLIF: transforaminal lumbar interbody fusion, UIV: upper instrumented vertebra.