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

Table 2

The results of the BMD at 24 and 48 weeks after surgery.

		ROI 1	ROI 2	ROI 3	ROI 4	ROI 5	ROI 6	ROI 7
24 weeks	HA	87.4	96.3	97.9	101	102.4	98.4	89.4
	Non-HA	91.4	90.8	93.8	100.5	99.1	87.5	72.2
	value	N.S.	N.S.	0.03	N.S.	N.S.	0.03	N.S.
48 weeks	HA	84.3	93	98.3	103	104.6	98.3	82
	Non-HA	91.9	90.6	95.2	101.8	101.1	91.1	69.7
	value	0.04	N.S.	N.S.	N.S.	N.S.	N.S.	N.S.

N.S.: not significant.