Analysis of the efficacy of drilling decompression autologous bone marrow and allogeneic bone grafting in the treatment of HIV-positive patients with early osteonecrosis of the femoral head

Table 2 Changes in BMD values at different time points in the experimental group and comparison of Harris and VAS scores at different time points in the two groups

	Group A			Hip Harris score		P-value	VAS score			T-value	P-value
	BMD(g/cm²)	T-score	Z-score	Group A	Group B			Group A	Group B
Preoperative	0.81 ± 0.12	−1.34 ± 0.69	−1.05 ± 0.67	55.57 ± 3.60	56.43 ± 3.10	−0.82	0.414	5.19 ± 0.98	5.05 ± 0.74	0.53	0.597
6 months postoperatively	0.91 ± 0.07	−0.67 ± 0.54	−0.46 ± 0.50	87.33 ± 2.47	88.05 ± 2.31	−0.96	0.340	1.24 ± 0.76	1.14 ± 0.72	0.41	0.682
24 months postoperatively	1.09 ± 0.06	0.47 ± 0.27	0.49 ± 0.37	85.05 ± 4.05	88.81 ± 2.08	−3.77	0.001	0.95 ± 0.74	1.05 ± 0.74	−0.41	0.679
F-value	58.117	71.179	52.319	556.31	1110.83	-	-	168.32	202.11	-	-
P-value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	-	-	< 0.001	< 0.001	-	-

ISSN: 1471-2474