Fig. 5.

One-way sensitivity analysis is shown for the probability of no pain after revision in resurfacing. The lines represent the expected value (EV) for the decision to revise and the decision not to revise for anterior knee pain. Above the threshold value (a probability of 0.59), revision should be performed. The current estimate of 0.70 is close to the threshold, indicating that the recommended decision to reoperate in the presence of AKP in the resurfaced patella may change as more data become available, or may depend on the specifics of each patient’s case.