After surgery on 16 patients with iatrogenic AVN of femur head in DDH, according to the grading standard by Zhang and Dai the final results can be divided as excellent in 2case(12.5%),good in 6 cases(37.5%)and poor in 8(50%).

• 16例由发育性髋关节脱位治疗引起的医源性股骨头骨骺缺血性坏死的患儿经过手术治疗；按照张质彬、戴祥麒的评分标准进行评估；优2例占12.；5%25；良6例占37