Factors affecting the outcomes and revision of patellofemoral arthroplasty were studied.

Higher body mass index (BMI) led to less clinical improvement and more radiographic outliers.

Survivorship at a mean of 4.1 years was 92.2%, which mirrors that for total knee arthroplasty (TKA).

Obesity led to higher revision rates due to progression of tibiofemoral arthritis.

Absence of trochlear dysplasia increased revision rates due to progression of tibiofemoral osteoarthritis (TFOA).