表 4.

组别 Group	Tb.Th (μm)				Tb.Sp (μm)
	坏死区 Necrotic region	硬化区 Sclerotic region	正常区 Healthy region		坏死区 Necrotic region	硬化区 Sclerotic region	正常区 Healthy region
激素性 ONFH Steroid-induced ONFH	117.08±10.79	288.71± 6.25	163.47±5.10		1 665.18±62.04	339.99±11.98	536.12±8.35
酒精性 ONFH Alcohol-induced ONFH	146.88±13.77	313.45±12.59	168.20±4.64		1 388.99±79.92	311.29± 7.63	534.76±6.41
统计值 Statistic	t=–5.901 P= 0.000	t=–6.097 P= 0.000	t=–2.093 P= 0.053		t=9.456 P=0.000	t=7.000 P=0.000	t=0.448 P=0.660