目的　寻找对早期股骨头缺血性坏死更有效的诊断方法。方法　选择 10例 (2 0个髋 )正常人和 2 8例 (35个髋 )股骨头缺血性坏死 (FHIN)患者分别进行骨因子分析显像、骨三相显像和骨断层显像 ,得到 3组结果并将 3组结果进行对比分析。结果　对Ⅰ、Ⅱ期FHIN患者诊断的灵敏度以99mTc MDP骨因子分析显像最高 ,为 76 4% ,骨断层显像为5 2 9% ,骨三相显像 35 2 9%。骨因子分析与骨三相相比有显著性差异 (P <0 0 5 ) ,而 3者对Ⅲ期以上FHIN诊断的灵敏度基本一致。结论　99mTc MDP骨因子分析显像在FHIN早期诊断和病情评估方面比骨三相显像和骨断层显像更有价值 Objective To find a more effective diagnostic method for avascular necrosis of femoral head. Methods 10 cases (20 hips) of normal subjects and 28 cases (35 hips) of avascular necrosis of femoral head (FHIN) were selected for bone factor imaging, bone three-phase imaging and bone tomography, Three groups of results were obtained and three groups of results were compared. Results The sensitivity of 99m Tc MDP bone factor analysis in diagnosing FHIN patients with stage Ⅰ and Ⅱ was the highest, 76 4%, 52 29% and 35 29% respectively. The bone factor analysis showed significant difference compared with the bone three-phase (P <0.05), while the sensitivity of the three to the FHIN diagnosis over the third stage was basically the same. Conclusions 99mTc MDP bone factor imaging is more valuable in the early diagnosis and assessment of FHIN than bone three-phase imaging and bone tomography