Figure 2: Effect of LIPUS and growth hormone on mandibular head length changes. (a) Measurement of mandibular head. (Straight line was drawn in between the two points that are anatomically situated in the lowest position in 2D reconstructed images. Length of mandibular head was measured by drawing a perpendicular line from the highest point of the condylar process towards the former line.) (b) Effect of treatment on the length of the mandibular head (LMH). After measurement length of the left mandibular head was divided by length of the right mandibular head. Ratio was analyzed among four different groups mentioned before. *, compared to control.