Table 1.
Results of knee function tests between baseline (preoperative) and at one year post procedure, year one and year five, year five and year ten in those with and without the presence of a fixed flexion deformity
| Knee function tests | Preoperative FFD | No preoperative FFD | All subjects combined | Interaction | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Base-line | Year one | p | Base-line | Year one | p | Base-line | Year one | p | p | η2 | |
| FFD (°) | 16.88 (5.73) | 4.14 (6.00) | < 0.001 | 0.00 (0.00) | 1.13 (3.17) | 0.003 | 8.44 (9.39) | 2.64 (5.01) | < 0.001 | < 0.001 | .680 |
| Total ROM (°) | 84.02 (18.17) | 100.66 (17.02) | < 0.001 | 102.40 (13.92) | 108.16 (12.57) | 0.002 | 93.21 (18.54) | 104.41 (15.38) | < 0.001 | 0.001 | .010 |
| Maximum flexion (°) | 100.91 (15.99) | 104.80 (13.75) | 0.062 | 102.40 (13.92) | 109.29 (11.02) | < 0.001 | 101.66 (14.90) | 107.05 (12.62) | < 0.001 | 0.355 | .007 |
| KSS | 23.95 (13.82) | 90.23 (7.80) | < 0.001 | 42.58 (12.33) | 93.22 (6.12) | < 0.001 | 33.27 (16.06) | 91.72 (7.15) | < 0.001 | < 0.001 | .200 |
| Knee function tests | Preoperative FFD | No preoperative FFD | All subjects combined | Interaction | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Year one | Year five | p | Year one | Year five | p | Year one | Year five | p | p | η2 | |
| FFD (°) | 4.14 (6.00) | 2.58 (4.77) | 0.002 | 1.13 (3.17) | 0.77 (2.95) | 0.244 | 2.64 (5.01) | 1.68 (4.06) | 0.001 | 0.042 | .032 |
| Total ROM (°) | 100.66 (17.02) | 103.91 (15.37) | < 0.001 | 108.16 (12.57) | 111.70 (12.87) | < 0.001 | 104.41 (15.38) | 107.66 (14.66) | < 0.001 | 0.944 | .000 |
| Maximum flexion (°) | 104.80 (13.75) | 106.49 (12.82) | < 0.001 | 109.29 (11.02) | 112.47 (11.14) | < 0.001 | 107.05 (12.62) | 109.48 (12.34) | < 0.001 | 0.264 | .010 |
| KSS | 90.23 (7.80) | 90.33 (8.10) | 0.287 | 93.22 (6.12) | 92.42 (9.11) | 0.286 | 91.72 (7.15) | 91.38 (8.65) | 0.540 | 0.637 | .002 |
| Knee function tests | Preoperative FFD | No preoperative FFD | All subjects combined | Interaction | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Year five | Year ten | p | Year five | Year ten | p | Year five | Year ten | p | p | η2 | |
| FFD (°) | 2.58 (4.77) | 1.09 (3.09) | 0.005 | 0.77 (2.95) | 0.32 (1.87) | 0.096 | 1.68 (4.06) | 0.71 (2.57) | 0.001 | 0.058 | .028 |
| Total ROM (°) | 103.91 (15.37) | 105.31 (13.14) | 0.302 | 111.70 (12.87) | 109.42 (13.06) | 0.014 | 107.66 (14.66) | 107.36 (14.66) | 0.593 | 0.207 | .038 |
| Maximum flexion (°) | 106.49 (12.82) | 106.40 (12.01) | 0.932 | 112.47 (11.14) | 109.74 (11.92) | 0.001 | 109.48 (12.34) | 109.48 (12.34) | 0.039 | 0.052 | .008 |
| KSS | 90.33 (8.10) | 86.94 (16.34) | 0.046 | 92.42 (9.11) | 88.35 (13.42) | 0.004 | 91.38 (8.65) | 87.64 (14.99) | 0.001 | 0.349 | .007 |
FFD fixed flexion deformity, ROM range of movement, KSS Knee Society score
Values given as mean and (standard deviation)