To determine the role of arthroscopy in treatment of the DDH.
* The term developmental dysplasia of the hip (DDH) is composed of a spectrum of pathologies from stable acetabular dysplasia (femoral head centered in acetabulum but acetabulum is shallow) to concentric hips that are unstable (femoral head can be moved in and out of the confines of the acetabulum) and frankly dislocated hips in which there is a complete loss of contact between the femoral head and acetabulum. * Open reduction , traditionally through a Smith - Peterson approach should be considered only if closed reduction cannot be performed. * Medial open surgical reduction is a choice for the management of patients younger than 18 months with DDH. The minimal incision and minimal blood loss are advantages of this approach. Limited exposure of the hip joint is a disadvantage. * The arthroscopic procedure was reported to represent a meaningful alternative to the open procedure due to a lower complication rate, a safe setting, a lower rate of residual dysplasia, no observed redislocation and low rate occurrence of osteonecrosis. * All the intra-articular structures (hypertrophic ligamentum teres, transverse acetabular ligament, and pulvinar tissue) in the acetabulum that impede the reduction of the femoral head could be eliminated by using the arthroscopic technique.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
32
Arthroscopically-Assisted reduction through anterolateral portal for visualization and other accessory portals for instrumentation to achieve reduction and postoperative immobilization in a hip spica.
Open reduction through a bikini incision anterior approach and postoperative immobilization in a hip spica.
Determination the success of reduction and incidence of redislocation rate
Documentation of concentric reduction of the hip in immediate postoperative MRI as an assessment tool for the success of the procedure.
Time frame: immediately postoperative
Assessment of the cosmetic appearance .
Documentation the wound size after 3 months follow up in clinical examination as an assessment tool of cosmotic appearance
Time frame: 3 month follow up
Assessment of the shortening
Assessment the incidence of leg length discrepancy and shortening that affect walking after one year follow up in clinical examination and x-ray as an assessment tool of shortening
Time frame: 1 year follow up
Assessment the incidence stiffness and decrease range of motion of the affected hip
documentation the range of motion of the affected hip and incidence of stiffness after 6 months follow up in clinical examination as an assessment tool of stiffness.
Time frame: 1 year follow up
Assessment the incidence of avascular necrosis in the affected hip
documentation the incidence of avascular necrosis of the affected head of hip after one year follow up in clinical examination and x-ray
Time frame: 1 year follow up
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