Figure 1.
Comparison of general data
| Group | PRP group (n = 70) | Combination group (n = 70) | χ2/t | p |
|---|---|---|---|---|
| Male/Female | 36/34 | 39/31 | 0.259 | 0.611 |
| Age/years | 46.64 ± 5.13 | 45.31 ± 5.45 | 1.486 | 0.140 |
| BMI/(kg/m2) | 23.35 ± 3.24 | 23.79 ± 3.15 | 0.816 | 0.416 |
| Left/right knee | 31/39 | 33/37 | 0.115 | 0.734 |
| Duration/day | 11.84 ± 3.55 | 12.14 ± 3.28 | 0.519 | 0.605 |
Comparison of IKDC scores (x̄ ± s, score)
| Group | Group | PRP group (n = 70) | Combination group (n = 70) | t | p | Cohen's d |
|---|---|---|---|---|---|---|
| Preoperative | 40.44 ± 5.61 | 39.84 ± 6.37 | 0.591 | 0.555 | 0.100 | |
| Postoperative | 1 month | 45.47 ± 4.42 | 49.60 ± 4.35 | 5.572 | < 0.001 | 0.942 |
| 3 months | 62.17 ± 6.53 | 66.77 ± 6.21 | 4.27 | < 0.001 | 0.722 | |
| 6 months | 74.48 ± 6.24 | 78.94 ± 6.14 | 4.273 | <0.001 | 0.720 | |
| 12 months | 82.21 ± 4.21 | 88.44 ± 3.31 | 9.731 | < 0.001 | 1.645 | |
| F | 754.911 | 963.453 | ||||
| p | <0.001 | < 0.001 | ||||
| Partial Eta Squared | 0.897 | 0.918 | ||||
Comparison of swelling degree (x̄ ± s, cm)
| Group | n | Difference in thigh circumference | Difference in calf circumference |
|---|---|---|---|
| PRP group | 70 | 3.69 ± 1.27 | 3.26 ± 1.42 |
| Combination group | 70 | 2.95 ± 1.58 | 2.47 ± 1.39 |
| t | 3.012 | 3.367 | |
| p | 0.003 | 0.001 | |
| Cohen's d | 0.516 | 0.562 |
Comparison of postoperative tendon and bone healing (n, %)
| Group | n | Type I | Type II | Type III |
|---|---|---|---|---|
| PRP group | 70 | 21 (30.00) | 41 (58.57) | 8 (11.43) |
| Combination group | 70 | 36 (51.43) | 31 (44.29) | 3 (4.29) |
| χ2 | 7.609 | |||
| p | 0.022 | |||
| Phi coefficient | 0.233 | |||
Comparison of Lysholm scores (x̄ ± s, score)
| Group | Group | PRP group (n = 70) | Combination group (n = 70) | t | p | Cohen's d |
|---|---|---|---|---|---|---|
| Preoperative | 45.83 ± 6.22 | 46.76 ± 6.24 | 0.882 | 0.379 | 0.149 | |
| Postoperative | 1 month | 48.14 ± 4.73 | 52.46 ± 5.79 | 4.828 | < 0.001 | 0.817 |
| 3 months | 59.76 ± 6.43 | 69.23 ± 4.76 | 9.902 | < 0.001 | 1.674 | |
| 6 months | 71.54 ± 6.71 | 82.33 ± 4.85 | 10.905 | < 0.001 | 1.843 | |
| 12 months | 84.39 ± 4.13 | 88.81 ± 4.53 | 6.049 | < 0.001 | 1.020 | |
| F | 559.254 | 838.363 | ||||
| p | < 0.001 | < 0.001 | ||||
| Partial Eta Squared | 0.866 | 0.907 | ||||
Comparison of VAS scores (x̄ ± s, score)
| Group | Group | PRP group (n = 70) | Combination group (n = 70) | t | p | Cohen's d |
|---|---|---|---|---|---|---|
| Preoperative | 5.14 ± 2.40 | 5.20 ± 2.52 | 0.137 | 0.891 | 0.024 | |
| Postoperative | 1 month | 7.64 ± 1.22 | 6.87 ± 1.33 | 3.583 | < 0.001 | 0.603 |
| 3 months | 4.41 ± 1.22 | 3.67 ± 1.64 | 3.04 | < 0.001 | 0.512 | |
| 6 months | 3.74 ± 1.45 | 2.87 ± 1.51 | 3.478 | < 0.001 | 0.588 | |
| 12 months | 2.87 ± 1.33 | 2.01 ± 1.22 | 3.973 | < 0.001 | 0.674 | |
| F | 91.364 | 89.49 | ||||
| p | < 0.001 | < 0.001 | ||||
| Partial Eta Squared | 0.514 | 0.509 | ||||