New scoring system in assessment of Hoffa’s fat pad synovitis: A comparative study with established scoring systems

Figure 3 Parapatellar synovitis score. A: Two slices are chosen for the parapatellar synovitis score, and each corresponds with the first and last axial slice, respectively, in which the patella was still visible; B, C: The five sites of interest include three points in the suprapatellar recess, one point in the lateral gutter, and one point in the medial femoral gutter. Thickening of the inflamed synovium is determined in each site and is graded on a four-point scale, according to the thickness.