Table 2:
Escobar modified acceptability criteria for 16 scenarios based on the 5 pre-operative clinical factors
| Scenario | Age | KL grade | Knee symptoms | Knee compartments with X-ray evidence of osteoarthritis | Knee stability | Appropriateness rating |
|---|---|---|---|---|---|---|
| 1 | <=3 | Slight/ Moderate | Inappropriate | |||
| 2 | 4 | Slight | Inappropriate | |||
| 3 | <55 | 4 | Moderate | Inappropriate | ||
| 4 | >=55 | 4 | Moderate | Uni-compartmental | Inappropriate | |
| 5 | >=55 | 4 | Moderate | bi or tri-compartmental | inconclusive | |
| 6 | <55 | <=3 | intense/severe | Uni or bi-compartmental | Inappropriate | |
| 7 | <55 | <=3 | intense/severe | Tri-compartmental | inconclusive | |
| 8 | >=55 | <3 | intense/severe | Normal | Inappropriate | |
| 9 | >=55 | 3 | intense/severe | Normal | inconclusive | |
| 10 | 55–65 | <3 | intense/severe | Limited | inconclusive | |
| 11 | >65 | <3 | Intense | Limited | inconclusive | |
| 12 | >65 | <3 | Severe | Limited | appropriate | |
| 13 | >=55 | 3 | intense/severe | Limited | appropriate | |
| 14 | >=55 | 4 | intense/severe | appropriate | ||
| 15 | <55 | 4 | intense/severe | Uni-compartmental | inconclusive | |
| 16 | <55 | 4 | intense/severe | bi or tri-compartmental | appropriate |