Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs43055-019-0102-z/MediaObjects/43055_2019_102_Fig2_HTML.png)
Forty-five-year-old woman with knee pain, 3D WATS-c (a) showing linear areas of low signal intensity in lateral patellar articular facet and its surface less than 50% of articular thickness in keeping with grade 2A, FS-PD (b) show corresponding high signal intensity