Methods Twenty-nine SLE patients with AVN of bone,40 SLE patients and 20 polymyositis (PM)/dermatomyositis (DM) patients without AVN were selected randomly from the inpatient.

• 方法统计本院发生无菌性骨坏死住院的29例SLE病人，同时随机抽样不伴有无菌性骨坏死的40例SLE和20例皮肌炎/多发性肌炎(DM/PM)病人作为对照组。