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 1

Demographic data.

	HA	Non-HA	value
Number of hips	32	20
Gender (female/male)	27/5	19/1	0.24
Osteoarthritis/osteonecrosis	29/3	17/3	0.54^†
Average age	65 ± 12	65 ± 10	0.66
Average BMI	23.7 ± 3.8	24.7 ± 5.5	0.44
Harris hip score	54 ± 15	64 ± 9	0.09

Unpaired Student’s test. ^†Chi-square test.