Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13018-020-1556-4/MediaObjects/13018_2020_1556_Fig4_HTML.png)
Comparison of preoperative (a) and postoperative (b) Merchant-view radiographs demonstrating restoration of patellofemoral tracking
Comparison of preoperative (a) and postoperative (b) Merchant-view radiographs demonstrating restoration of patellofemoral tracking