Application Of Femoral Neck Anteversion's Correction In The Treatment Of Children's Developmental Dysplasia Of The HIP

Objectives: To discuss application of Femoral Neck Anteversion's correction in the treatment of children's Developmental Dysplasia of the HipMethods: 98 children diagnosed DDH from Jan 2006 to Jan 2010(28 hips in 23 boys and 86 hips in 75 girls, age from 1.5～14 years, average 7.2 years) were treated and followed up ranging from 12 to 48 months, average 32 months. Before the operations, FNA index were evaluated by X-ray and thin slice hip joint scan and 3D reconstruction to guide the rotary osteotomy.After the operations, FNA index were rechecked.Results:All the patients were followed up ranging from 12 to 48 months, average 32 months. According to Mckay's classification, clinical assessment was performed. 84 hips were evaluated as excellent (73.68%), 20 hips as good (17.55%), 10 hips as acceptable (8.77%),and no poor hip (0%) was reported. FNA decreased averagely 16.3°±2.0°. Data were analyzed by SPSS 17.0 with t test, FNA had significant difference with themselves before the operations (P<0.01) and had no significant difference with the normal side(P>0.05).Conclusions: The change of FNA is one of the most important pathological changes. Through the surgical correction, the force of the hip transmission system and motor system has been restored. Also it ensures the joint's mechanical structure and stability. And the renew acetabulum can be well stimulated to be closed to the normal. For this reason,FNA's correction is one of the most valuable to guarantee success operation.