EC Paediatrics

Background: Outcome of Open reduction and Hung Zigzag Osteotomy combined Fibular Allograft (HZOFA) for Congenital Developmental Dysplasia of the Hip . The purposes of this study were evaluate the long-term outcomes and complications after HZOFA.

Methods: We performed a retrospective match-controlled study in wich 188 patients had 219 Hips with Developmental Dysplasia of the Hip (DDH). Radiographs were found of acetabular index, height of dislocation, Tӧnnis grade, abduction angle in the spica cast, and Severin grade. Final Follow-up, AVN according to Kalamchi, Deficiency of leg length, Clinical evaluation according to modified McKay criteria.

Results: Between 2009 and 2013, 153 girls (84.2%) and 35 boys (15.8%) with DDH underwent Open reduction and HZOFA; 157 (83.5%) were unilateral, and 31 (16.5%) were bilateral. Tönnis system Type 3 in 153 hips (69.9%), and Type 4 in 66 hips (30.1%). Post-Operative completely incorporated mean 14 weeks. Clinical evaluation according to modified McKay criteria: Excellent 139 (63.4%), Good 34 (15.6%), Fair 25 (11.4%), Poor: 21 (9.6%). Satisfy Results in Primery Operation group 119 Hips (75.8%) and Femoral Shortening group 54 Hips (87.0%).

Conclusions: Acetabular index was improved. Surgical technique with HZOFA did not expose outer iliar table and limited injury of muscular abductor, reduced Trendelenburg gait; the blood loss from this procedure is acceptable. Some Complications have saw in this study: AVN, Redislocation, and Dital femoral Fracture.

 Keywords: DDH; Redislocation; Hip Dysplasia; Bone Allograft; Avascular Necrosis

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