Table 1. The Mean Knee Flexion and Extension Strength at Different Time Points and Angles .
| Strength at Different Follow up Times, N | Strength at Different Angles | |||
|---|---|---|---|---|
| 20˚ | 45˚ | 90˚ | 110˚ | |
| Mean unoperated knee flexion strength preoperatively | 164.93 | 180 | 188.73 | 176.10 |
| Mean unoperated knee flexion strength 6 months postoperatively | 161.17 | 179.33 | 192 | 180.10 |
| Mean unoperated knee flexion strength 12 months postoperatively | 163.40 | 180.07 | 189.33 | 180.00 |
| Mean operated knee flexion strength preoperatively | 161.70 | 179.33 | 182.10 | 174.00 |
| Mean operated knee flexion strength 2 months postoperatively | 158.77 | 164.20 | 134.20 | 122.07 |
| Mean operated knee flexion strength 4 months postoperatively | 159.40 | 172.10 | 155.37 | 142.77 |
| Mean operated knee flexion strength 6 months postoperatively | 159.43 | 174.00 | 160.00 | 150.67 |
| Mean operated knee flexion strength 12 months postoperatively | 164.00 | 172.67 | 167.33 | 161.33 |