Table 1.
Preoperative patients’ demographics and clinical characteristics
| Group T (n = 19 patients) |
Group E (n = 84 patients) |
P value | |
|---|---|---|---|
| Sex, male/female | 4/15 | 17/67 | n.s.a |
| Age, years | 69.2 ± 7.9 | 71.6 ± 8.4 | n.s. |
| Body mass index, kg/m2 | 26.7 ± 4.7 | 26.6 ± 4.2 | n.s. |
| Diagnosis, osteoarthritis/rheumatoid arthritis | 15/4 | 67/17 | n.s.a |
| MTSA, ° | 9.0 ± 2.6 | 8.3 ± 3.2 | n.s. |
| HKAA, ° | 10.4 ± 7.5 | 10.1 ± 5.0 | n.s. |
| FCA, ° | 18.2 ± 9.2 | 7.6 ± 7.6 | < 0.001* |
| Active maximum flexion angle, ° | 108.4 ± 25.5 | 120.5 ± 19.2 | n.s. |
Data are displayed as means ± standard deviation. Statistical differences were analyzed using the Mann–Whitney U test, except for Fisher’s exact tests (a). MTSA medial tibial slope angle, HKAA hip knee ankle angle, FCA flexion contracture angle, n.s not significant; (*) statistically significant (P < 0.05).