Comparison of clinical outcomes in osteoporotic vs nonosteoporotic patients.
| Characteristic | Nonosteoporosis (n = 70) | Osteoporosis (n = 32) | P |
| Age, y, mean (SD) | 72.1 (8.0) | 76.1 (5.6) | 0.011a |
| Sex, men/women, n | 43/27 | 6/26 | <0.001a |
| Height, cm, mean (SD) | 159.6 (8.5) | 151.9 (7.2) | <0.001a |
| Body weight, kg, mean (SD) | 63.8 (12.6) | 51.9 (8.4) | <0.001a |
| BMI, mean (SD) | 24.9 (3.7) | 22.5 (3.3) | 0.002a |
| Tobacco use, n (%) | 13 (19) | 3 (9) | 0.194 |
| Steroid use, n (%) | 4 (6) | 6 (19) | 0.092 |
| Indications, n (%) | |||
| LCS+ (LDS) | 61 (87) | 27 (84) | 0.362 |
| Degenerative lumbar scoliosis | 7 (10) | 2 (6) | |
| Foraminal stenosis | 1 (1) | 3 (9) | |
| Lumbar disc herniation | 1 (1) | 0 (0) | |
| Lumbar BMD, mean (SD) | 1.059 (0.213) | 0.800(0.134) | <0.001a |
| Lumbar YAM BMD, %, mean (SD) | 107.8 (21.5) | 81.5 (13.1) | <0.001a |
| Lumbar spine T score, mean (SD) | 0.7 (1.9) | −1.6 (1.1) | <0.001a |
| Femoral neck BMD, mean (SD) | 0.717 (0.119) | 0.509 (0.065) | <0.001a |
| Femoral neck YAM BMD, %, mean (SD) | 90.5 (14.9) | 64.1 (7.6) | <0.001a |
| Femoral neck T score, mean (SD) | −0.9 (1.3) | −3.2 (0.6) | <0.001a |
| Low YAM BMD, %, mean (SD) | 89.3 (14.4) | 63.7 (7.1) | <0.001a |
| Low T score, mean (SD) | −0.9 (1.3) | −3.2 (0.6) | <0.001a |
| Inner diameter of the femoral shaft, mean (SD) | 13.9 (2.0) | 14.5 (1.9) | 0.200 |
| Outer diameter of the femoral shaft, mean (SD) | 29.2 (2.3) | 27.7 (2.4) | 0.005a |
| CBR, mean (SD) | 0.477 (0.056) | 0.521 (0.050) | <0.001a |
Abbreviations: BMD, bone mineral density; BMI, body mass index; CBR, canal bone ratio; LCS, lumbar canal stenosis; LDS, lumbar degenerative spondylolisthesis; YAM, young adult mean.
Note: Data presented as mean (SD) or number of patients (%).
↵a Statistically significant.