Table 2.
Comparison of KSS and satisfaction by group.
| CCK group (n = 33)a | RHK group (n = 30)a | P value | |
|---|---|---|---|
| Preoperative KSS | |||
| Knee | 46.6 ± 11.7 [12 – 69] | 45.6 ± 14.9 [20 – 85] | n.s. |
| Function | 47.3 ± 14.8 [10 – 80] | 30.9 ± 19.5 [0 – 68] | 0.05 |
| Total | 93.9 ± 21.6 [27 – 129] | 76.5 ± 28.6 [20 – 135] | 0.008 |
| Postoperative KSS | |||
| Knee | 70.5 ± 10.2 [36 – 87] | 60.7 ± 14.4 [41 – 95] | 0.003 |
| Function | 74.9 ± 12.5 [40 – 100] | 47.7 ± 21.4 [10 – 90] | 0.004 |
| Total | 145.3 ± 20 [81 – 179] | 108.4 ± 32.8 [51 – 169] | 0.03 |
| KSS Improvement | |||
| Knee | 23.9 ± 14.1 [−21 – 58] | 15.2 ± 15.9 [−14 – 51] | 0.03 |
| Function | 27.6 ± 17.8 [−5 – 60] | 16.7 ± 28.1 [−40 – 70] | n.s. |
| Total | 51.5 ± 27.6 [−21 – 98] | 31.9 ± 40.2 [−54 – 121] | 0.03 |
| Postoperative satisfaction | 26/33 (78.8%) | 14/30 (46.7%) | 0.01 |
a
Data are presented as mean ± standard deviation [minimum–maximum] or number (proportion).
CCK: Condylar Constrained Knee; RHK: Rotating hinge knee; KSS = Knee society score; n.s.: non-significant