| Item | Grade of Limitation | Pre-Surgery | 1 Year | 2 Years | 3 Years | 4 Years | 5 Years |
|---|---|---|---|---|---|---|---|
| Walking | No Limitation | 24.8% | 48.9% | 59.2% | 68.9% | 75.0% | 66.7% |
| Limitation mild | 41.6% | 42.4% | 35.2% | 27.9% | 25.0% | 33.3% | |
| Limitation moderate | 23.9% | 8.7% | 4.2% | 1.6% | 0.0% | 0.0% | |
| Limitation severe | 9.7% | 0.0% | 1.4% | 1.6% | 0.0% | 0.0% | |
| Stair Climbing and Descending | No Limitation | 16.8% | 35.2% | 40.3% | 42.6% | 66.7% | 66.7% |
| Limitation mild | 41.6% | 49.5% | 50.0% | 45.9% | 25.0% | 33.3% | |
| Limitation moderate | 17.7% | 8.8% | 4.2% | 6.6% | 8.3% | 0.0% | |
| Limitation severe | 23.9% | 6.6% | 5.6% | 4.9% | 0.0% | 0.0% | |
| Kneeling | No Limitation | 7.9% | 19.6% | 20.8% | 33.3% | 25.0% | 66.7% |
| Limitation mild | 31.9% | 52.2% | 48.6% | 45.0% | 50.0% | 33.3% | |
| Limitation moderate | 17.7% | 9.8% | 15.3% | 8.3% | 0.0% | 0.0% | |
| Limitation severe | 42.5% | 18.5% | 15.3% | 13.3% | 25.0% | 0.0% |