Developmental Hip Dysplasia by Ultrasonographic Screening of Asymptomatic Infants at Assiut University Hospital

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

330 participants

Study Classification

OBSERVATIONAL

Study Start Date

2017-01-01

Study Completion Date

2018-03-01

Brief Summary

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Developmental dysplasia of the hip (DDH), formerly known as congenital dislocation of the hip, comprises a spectrum of abnormalities that include abnormal acetabular shape (dysplasia) and malposition of the femoral head.

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Detailed Description

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The origin and pathogenesis of DDH are multifactorial. Abnormal laxity of the ligaments and hip capsule is seen in patients with DDH. The maternal hormone relaxin may also be a factor. Extreme hip flexion with knee extension, as in the breech position, tends to promote femoral head dislocation and leads to the shortening and contracture of the iliopsoas muscle.

It was previously reported that DDH was the underlying aetiology in about 25 % of the performed hip replacements under the age of 40 years and the initial diagnosis age ranged from 0 to 39 years, with a mean of 8 years in these patients.

The main purpose of a newborn hip screening program is to detect DDH as early as possible, so that early treatment can be given and the need for surgical treatment as well as the development of residual hip dysplasia can be avoided.

Ultrasonography offers distinct advantages compared with other imaging techniques: unlike plain radiography, it can distinguish the cartilaginous components of the acetabulum and the femoral head from other soft tissue structures, real-time US permits multiplanar examinations that can early determine the position of the femoral head in respect to the acetabulum; thus it provides the same type of information that can be obtained with arthrography, computerized tomography, or magnetic resonance imaging, but at lower cost, although ultrasonography is more expensive than plain radiography, it doesn't require sedation and doesn't involve ionizing radiation, unlike other techniques and it allows observation of changes in hip position with movement.

Conditions

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Orthopedic Disorder

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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screened infants

Asymptomatic infants under age of 6 months, presenting to the pediatric orthopaedic outpatient clinic at Assiut university hospital for other problems will be subjected to ultrasound examination of the hip joint.

ultrasound examination of the hip joint

Intervention Type OTHER

US examination by US machine , Midray model DP-2200 made in China , with a high frequency (5-10 MHZ) linear transducer using the previously described Graf method for assessment of both hip joints.

Interventions

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ultrasound examination of the hip joint

US examination by US machine , Midray model DP-2200 made in China , with a high frequency (5-10 MHZ) linear transducer using the previously described Graf method for assessment of both hip joints.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* All infants under the age of 6 months attending Pediatric Orthopedic outpatient clinics at Assiut university hospital in the period between 1st of January 2017 to 30th of December 2017.