Research Article

Influence of Hydroxyapatite Coating for the Prevention of Bone Mineral Density Loss and Bone Metabolism after Total Hip Arthroplasty: Assessment Using 18F-Fluoride Positron Emission Tomography and Dual-Energy X-Ray Absorptiometry by Randomized Controlled Trial

Figure 3

Definition of each region of interest (ROI) and zone. Zone A = ROI 1 + ROI 7, zone B = ROI 2 + ROI 6, and zone C = ROI 3 + ROI 5.