Background
Methods
Surgical procedure
Clinical evaluation
Radiological evaluation
Complications
Statistical analysis
Results
Patient demographics
Variables | S group | L group | p value |
---|---|---|---|
Number of the patients | 87 | 46 | |
Detail of fused segments: segments (patients) (n) | 2 (26) 3 (61) | 4 (27) 5 (11) 6 (8) | |
Age at surgery | 77 [72–80] | 77 [73–82] | 0.42 |
Men/women (n) | 28/59 | 14/32 | 1 |
Affected vertebra (n) | 0.59 | ||
Th10 | 3 | 3 | |
Th11 | 7 | 5 | |
Th12 | 36 | 18 | |
L1 | 31 | 18 | |
L2 | 10 | 2 | |
Number of comorbidities | 1 [0–1] | 1 [0–2] | 0.55 |
Secondary osteoporosis (%) | 40.2 | 34.8 | 0.58 |
Preoperative medication of the osteoporosis drug (%) | 28.7 | 41.3 | 0.18 |
Preoperative steroid administration (%) | 6.9 | 10.9 | 0.51 |
F/u period (mon) | 43 [30–59] | 37 [30–54] | 0.56 |
Surgical invasion
Clinical evaluation
Variables | S group | L group | p value |
---|---|---|---|
LBP score (0–100) | |||
Pre | 80 [65–90] | 80 [60–90] | 0.62 |
Final | 30 [10–50] | 28 [10–50] | 0.88 |
LEP score (0–100) | |||
Pre | 50 [10–70] | 50 [15–80] | 0.54 |
Final | 10 [0–30] | 10 [0–30] | 0.10 |
JOA score (0–15) | |||
Pre | 6 [3–7] | 4 [1–6] | < 0.01** |
Final | 10 [8–12] | 10 [6–12] | 0.67 |
Recovery rate | 50.0 [28.6–67.3] | 50.0 [24.5–73.3] | 0.62 |
Walking ability (1–4) | |||
Pre (%) | |||
1 | 8.1 | 2.2 | 0.41 |
2 | 11.5 | 4.3 | |
3 | 24.1 | 34.8 | |
4 | 56.3 | 58.7 | |
Final (%) | |||
1 | 40.2 | 34.8 | 0.35 |
2 | 31.0 | 23.9 | |
3 | 19.5 | 34.8 | |
4 | 9.2 | 6.5 | |
Correction angle (°) | 12 [7–19] | 16 [7–23] | 0.14 |
Correction loss (°) | 9 [4–13] | 4 [0–10] | < 0.01** |
Radiological evaluation
Complications
Variables | S group | L group | p value |
---|---|---|---|
Perioperative complications (%) | 16.1 | 15.2 | 1 |
Neurological deterioration (%) | 0 | 0 | |
Dural tear (%) | 1.1 | 2.2 | 1 |
Hematoma (%) | 0 | 2.2 | 0.35 |
Delirium (%) | 8.0 | 0 | 0.095 |
Pneumonia (%) | 1.1 | 0 | 1 |
Cardiac disease (%) | 0 | 2.2 | 0.35 |
SSI (%) | 2.3 | 4.3 | 0.61 |
Gastrointestinal disease (%) | 1.1 | 4.3 | 0.28 |
Venous thrombosis (%) | 1.1 | 0 | 1 |
Electrolyte abnormality (%) | 1.1 | 0 | 1 |
Fracture of UIV or LIV (%) | 20.7 | 15.2 | 0.49 |
VF adjacent to UIV or LIV (%) | 16.3 | 19.6 | 0.64 |
Screw cut out (%) | 6.9 | 10.9 | 0.51 |
Reoperation (%) | 11.5 | 10.9 | 1 |
Implant removal due to screw cut out (%) | 1.1 | 4.3 | |
Extension of PSF (%) | 6.9 | 4.3 | |
Anterior reconstruction and extension of PSF (%) | 3.4 | 2.2 |