Clinical characteristics | Normal BMD (n = 69) | Low BMD (n = 50) | P value |
---|---|---|---|
Age (years) | 72.64 ± 5.95 | 73.90 ± 5.67 | 0.247 |
Sex | |||
Female | 62 (89.9%) | 48 (96.0%) | 0.211 |
Male | 7 (10.1%) | 2 (4.0%) | |
BMI (kg/m2) | 27.77 ± 4.19 | 25.50 ± 3.64 | 0.002 |
Anesthesia | |||
Spinal anesthesia | 20 (29.0%) | 16 (32.0%) | 0.724 |
General anesthesia | 49 (71.0%) | 34 (68.0%) | |
ASA score | |||
2 | 28 (40.6%) | 14 (28.0%) | 0.156 |
3 | 41 (59.4%) | 36 (72.0%) | |
Hypertension | |||
Yes | 54 (78.3%) | 43 (86.0%) | 0.283 |
No | 15 (21.7%) | 7 (14.0%) | |
Prior antiplatelet treatment | |||
Yes | 8 (11.6%) | 7 (14.0%) | 0.696 |
No | 61 (88.4%) | 43 (86.0%) | |
Operative time (min) | 103.67 ± 8.29 | 96.70 ± 8.93 | < 0.001 |
Patella resurfacing | |||
Yes | 59 (85.5%) | 36 (72.0%) | 0.07 |
No | 10 (14.5%) | 14 (28.0%) | |
Blood transfusion | |||
Yes | 2 (2.9%) | 1 (2.0%) | 0.758 |
No | 67 (97.1%) | 49 (98.0%) | |
Postoperative MAP (mmHg) | 96.70 ± 9.40 | 95.40 ± 10.71 | 0.485 |
Laboratory parameters | |||
Hemoglobin (g/mm3) | 12.1 ± 1.2 | 12.2 ± 1.2 | 0.787 |
Hematocrit (%) | 37.3 ± 3.7 | 37.4 ± 3.3 | 0.884 |
Platelet (× 103/mm3) | 261.2 ± 70.3 | 246.4 ± 52.0 | 0.213 |