Table 3.
Clinical examination and instrumental stability assessment pre- and postoperatively
| Parameters | Total (n = 26) |
Group A (n = 12) |
Group B (n = 14) |
p-value‡ |
|---|---|---|---|---|
| Maximum Flexion§, in ° | n.s. | |||
| • Preoperative | 130.7 ± 14.4 | 129.3 ± 15.8 | 132.0 ± 13.3 | |
| • Postoperative | 129.1 ± 6.7 | 131.0 ± 5.1 | 127.1 ± 7.8 | |
| Flexion SSD§, in ° | n.s. | |||
| • postoperative | 8.2 ± 4.9 | 8.5 ± 4.2 | 7.9 ± 5.8 | |
| Dial test ER SSD§ at 30° Flexion, in ° | n.s. | |||
| • postoperative | 4.1 ± 4.9 | 4.4 ± 3.1 | 3.3 ± 6.5 | |
| Dial test ER SSD§ at 90° Flexion, in ° | n.s. | |||
| • postoperative | 2.3 ± 3.7 | 2.8 ± 3.8 | 1.8 ± 3.7 | |
| Varus Stress at 30° Flexion† | n.s. | |||
| • Preoperative | ||||
| • Grade II | 26 (100) | 12 (100) | 14 (100) | |
| ;• Postoperative | ||||
| • Negative | 23 (88.5) | 11 (91.7) | 12 (85.7) | |
| • Grade I | 3 (11.5) | 1 (8.3) | 2 (14.3) | |
| • Grade II | - | - | - | |
| • Grade III | - | - | - | |
| Posterior Drawer SSD§, in mm | n.s. | |||
| • preoperative | 15.0 ± 2.4 | 15.1 ± 2.4 | 14.9 ± 2.4 | |
| • postoperative | 2.3 ± 1.2 | 2.6 ± 1.0 | 2.0 ± 1.4 | |
| • Difference of Posterior Drawer (pre- and postoperative) | 13.0 ± 2.7 | 13.1 ± 2.5 | 13.0 ± 3.1 |
n = 26; § mean ± SD; † n (in %); ‡ Shapiro–Wilk normality test and Kolmogorov–Smirnov test were performed to determine if the data were normally distributed, To compare both groups Student`s t-Test or Mann-Whitney U-Test were performed, Fisher’s exact test was used for comparison of binominal data; SD standard deviation; ER External Rotation; SSD Side-to-side difference