Table 1 Patient’s preoperative characteristics grouped by the preoperative fixed flexion contracture (FFC) (< 5° vs ≥ 5°)
Characteristics | Patients with FFC < 5° Means ± SD (range) | Patients with FFC ≥ 5° Means ± SD (range) | P-value |
|---|---|---|---|
Number | 21 | 27 | Â |
Age | 67 ± 7 (53 to 84) | 69 ± 6 (51 to 80) | 0.41 |
Body-Mass-Index | 29 ± 3 kg/m2 (26 to 38) | 31 ± 4 kg/m2 (23 to 39) | 0.53 |
Fixed Flexion Contracture | 1° ± 1.6 (0 to 4°) | 11.2° ± 5.7 (5 to 25°) |  < 0.001 |
Maximum Knee Flexion | 129° ± 8 (118 to 146°) | 125° ± 10 (90 to 138°) | 0.19 |
Coronal deformity (varus < 180, valgus > 180) | 179° ± 3 (172 to 183) | 177° ± 5 (171 to 188) | 0.054 |