Conclusions: Untreated asymptomatic osteonecrosis of the femoral head in patients with sickle cell disease has a high likelihood of progression to pain and collapse.

• 结论：镰形细胞病所致无症状性股骨头坏死的患者若未经合理处理，有很大可能性发展为疼痛和股骨头塌陷。