Table 3.
Mechanism of injury and treatment results at follow-up
| Patient number | Mechanism of injury | Treatment of subchondral laminar or osteochondral fracture | Length of follow-up (years) | Recurrent dislocations | Reoperations | Kujala score | Tegner score | KOOS HRQoL (0–16) |
|
|---|---|---|---|---|---|---|---|---|---|
| Before patellar dislocation | After follow-up | ||||||||
| 1 | Knee twisting | Removal | 3.1 | 0 | 0 | 100 | 3 | 7 | 0 |
| 2 | Knee extension | Fixation | 4.5 | 0 | 0 | 100 | 1 | 4 | 1 |
| 3 | Raising from kneeling | Removal | 4.2 | 0 | 0 | 90 | 6 | 6 | 3 |
| 4 | Straight impact with bend knee | Fixation | 6.0 | 2 | 1 | 98 | 7 | 6 | 3 |
| 5 | Knee twisting while jumping | Fixation | 4.0 | 0 | 1 | 66 | 7 | 4 | 9 |
| 6 | Running | Fixation | 5.1 | 0 | 0 | 98 | 3 | 2 | 5 |
| 7 | Knee twisting while jumping | Fixation | 4.4 | 0 | 0 | 94 | 7 | 6 | 4 |
| 8 | Knee twisting | Fixation | 4.2 | 0 | 0 | 98 | 4 | 4 | 4 |
| 9 | Walking | Removal | 3.5 | 0 | 0 | 96 | 7 | 6 | 2 |
| 10 | Knee twisting | Fixation | 4.8 | 0 | 0 | 47 | 1 | 7 | 14 |
| 11 | Raising the stairs | Removal | 8.0 | 0 | 0 | 91 | 9 | 7 | 0 |
| Mean (SD) | 4.7 (1.3) | – | – | 89 (17) | 5.0 (2.7) | 5.4 (1.6) | 4.1 (4.2) | ||
KOOS Knee and Osteoarthritis Outcome Score, HRQoL health-related quality of life, SD standard deviation