الفهرس 
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Abstract
SUMMARY
Developmental dysplasia of the hip (DDH) describes a wide range of deformities from dislocation, subluxation, instability, and dysplasia of the femoral head and acetabulum. There is a controversy regarding the ideal operative management. It includes open reduction, removing all soft tissue obstacles e.g. iliopsoas, adductors tendon release, pulvanir tissue, contracted TAL, hypertrophied ligamentum teres, doing capsulorrhaphy.
All methods were employed to achieve concentric stable reduction and to prevent long term subluxation or dislocation.
from June 2017 to June 2020, a prospective comparative study between salter osteotomy and dega actabuloplasty in DDH patients. It includes 40 hips. They are divided equally and randomized into two groups. Each group included 20hips. All patients were evaluated both clinical and radiological via severin, modified severin scores, shenton line and acetabular index.
The bony configuration of the hip resembled by acetabular index is a very important factor for stability of the hip.
There was no statistical significance between salter osteotomy and dega actabuloplasty regarding hip stability at the final examination.
The surgeons who are familiar with these procedures, either the DA or the SIO can be a safe and effective option for treating DDH.