Table 4.

Sonographically visible changes caused by arthritic inflammation in the TMJ

Findings by high-resolution ultrasonography	Right TMJ no. (%)	Left TMJ no. (%)	Total no. (%)
Synovial width (width of the joint space)	34 (21.3%)	21 (13.1%)	55 (34.4%)
Effusion in the joint space	8 (5%)	12 (7.5%)	20 (12.5%)
Width of the articular disc	26 (16.25%)	22 (13.75%)	48 (30%)
Condylar erosion—hyperechoic reflection	68 (42.5%)	56 (35%)	124 (77.5%)
Visible irregularities on the bony surface	20 (12.5%)	20 (12.5%)	40 (25%)
Total	156 (19.5%)	131 (16.4%)	287 (35.9%)

TMJ, temporomandibular joint.

The table data are based on 20 children, with four different images of each TMJ, every image receiving five different result parameters—hence 400 possible parameters in all children per side, 800 possible finding parameters in total.