| Indications | contraindication |
1 | Presence of arthritis within patellofemoral joint | Inflammatory arthropathy, |
2 | Having chondrocalcinosis | Ligamentous instability, |
3 | Don’t strictly exclude patients based on age, weight, activity level | Contracture of the MCL, |
4 | Highly active patients | Functionally absent ACL, |
5 | Younger ≥ 45 years and older [≥75 years] | Previous high tibial osteotomy |
6 | ACL deficient patient without instability by decreasing posterior slop of tibial component. |
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