Table 1 Patient demographics involving the hybrid and modified hybrid cementing techniques
Hybrid (n = 33) | Modified hybrid (n = 29) | P value | |
|---|---|---|---|
Age (years) | 67.9 (10.4) | 69.9 (8.7) | 0.429 |
Gender (female, %) | 30 (90.9%) | 28 (96.6%) | 0.616 |
BMI (kg/m2) | 25.4 (3.6) | 26.6 (3.7) | 0.193 |
ASA grade | |||
1 | 1 (3.0%) | 1 (3.4%) | 0.153 |
2 | 28 (84.8%) | 28 (96.6%) | |
3 | 4 (12.1%) | 0 (0%) | |
Specific comorbidities | |||
Hypertension | 23 (69.7%) | 16 (57.1%) | 0.423 |
Diabetes | 5 (15.2%) | 6 (20.7%) | 0.741 |
Cardiac disease | 8 (24.2%) | 3 (10.3%) | 0.194 |
Cerebrovascular event | 2 (6.1%) | 0 (0%) | 0.494 |
Thyroid disease | 4 (12.1%) | 0 (0%) | 0.116 |
Kidney disease | 2 (6.1%) | 0 (0%) | 0.494 |
Pulmonary disease | 3 (9.1%) | 6 (20.7%) | 0.283 |
Liver disease | 1 (3.0%) | 1 (3.4%) | 0.926 |
Tourniquete time (min) | 96.3 (14.6) | 91.0 (18.9) | 0.219 |
Joint line | 17.0 (6.8) | 19.1 (8.0) | 0.265 |
Posterior condylar offset | 27.7 (4.8) | 28.3 (3.9) | 0.646 |
Insall-Salvati ratio | 1.0 (0.3) | 1.0 (0.3) | 0.862 |
Preop HKA angle | Varus 8.1 (9.3) | Varus 8.2 (8.2) | 0.945 |
Postop HKA angle | Varus 3.6 (4.2) | Varus 3.9 (3.1) | 0.779 |
Preop flexion contracture (FCf) | 2.4 (8.0) | 7.3 (12.7) | 0.078 |
Preop further flexion (FF) | 113.1 (23.6) | 103.2 (28.3) | 0.150 |
Postop flexion contracture (FC) | 0.8 (2.3) | 0.9 (3.1) | 0.921 |
Postop further flexion (FF) | 112.8 (23.8) | 108.1 (22.2) | 0.445 |
Reason of revision | 0.287 | ||
Aseptic cause | |||
Loosening | 27 (81.8%) | 28 (96.6%) | |
Malposition | 3 (9.1%) | 1 (3.4%) | |
Stiffness | 1 (3.0%) | 0 (0%) | |
Instability | 2 (6.1%) | 0 (0%) | |
Prosthesis type | 0.609 | ||
PS | 13 (39.4%) | 14 (48.3%) | |
VVC | 20 (60.6%) | 15 (51.7%) | |
Femoral augment (yes, %) | 16 (48.5%) | 18 (62.1%) | 0.317 |
Tibial augment (yes, %) | 20 (60.6%) | 20 (69.0%) | 0.379 |