Conclusion Arthroscopic knee surgery is a good methed to evaluate and treat the patients who suffered from avascular osteonecrosis of knee.

• 结论一、二期骨坏死应以非手术治疗为主,三、四期应以手术治疗为主,关节镜治疗是其中一种兼检查和治疗于一体的较有效的手段。