Table 1 The demographic data of the patients
No. of patients | 60 |
Age, mean (range), yr | 70.7 ± 8.4 (49–88) |
Sex (Male / Female) | 30/ 30 |
Body mass index (kg/m2) | 24.5 ± 4.4 |
Duration of illness, (range), month | 50.9 ± 49.9 (2–180) |
Diagnosis | |
 Lumbar spinal stenosis | 42 (70%) |
 Lumbar spondylolisthesis | 13 (22%) |
 Degenerative lumbar scoliosis | 5 (8%) |
Surgical method | |
 Decompression | 26 (43%) |
 Fixation | 34 (57%) |