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Congenital dislocation of the hip. A review
Insights
Early diagnosis and treatment of congenital hip dislocation (CDH) in newborns are crucial. Prompt intervention using clinical exams and harnesses leads to better outcomes, while delayed diagnosis requires more complex procedures.
Area of Science:
- Orthopedics
- Pediatric Medicine
- Developmental Biology
Background:
- Congenital dislocation of the hip (CDH) typically arises from fetal positioning in late pregnancy.
- Early detection of hip instability or dislocation post-birth is key for timely intervention.
Purpose of the Study:
- To outline the diagnostic methods and treatment strategies for congenital dislocation of the hip based on infant age.
- To emphasize the importance of early diagnosis for successful treatment outcomes.
Main Methods:
- Clinical assessment using Ortolani's and Barlow's maneuvers for diagnosis in newborns.
- Radiographic evaluation becomes feasible for diagnosing CDH by 3 months of age.
- Treatment approaches vary with age, including harnesses for infants under 6 months, traction and tenotomy for older infants, and surgical osteotomies for children over 1 year.
Main Results:
- Early diagnosis via physical examination allows for prompt treatment, often with harnesses, leading to successful outcomes.
- Delayed diagnosis increases treatment complexity due to soft tissue contractures and bony changes.
- Treatment success rates decrease with age, necessitating more invasive procedures like traction, tenotomies, and osteotomies in older children.
Conclusions:
- Early recognition and intervention are paramount for successful management of congenital hip dislocation.
- Age-appropriate treatment strategies are essential, with earlier interventions yielding better prognoses.
- Preventing complications like avascular necrosis is a critical consideration in treatment planning.
Abstract:
Congenital dislocation of the hip usually results from capsular stretching caused by fetal malposition and crouching late in the third trimester. Early recognition of hip dislocation or instability soon after birth permits prompt treatment. Ortolani's and Barlow's maneuvers, respectively, reduce into and displace from the acetabulum a femoral head that is insecurely contained therein. The diagnosis of CDH in the first month of life usually depends on these clinical components of the physical examination of the newborn, because similar device, in this age group can usually maintain the displaced hip in sufficient flexion and abduction to permit reduction and normal development. By 3 months of age, the nuclei of the pelvis and upper femur have ossified enough to permit radiologic diagnosis of CDH. Problems related to treatment increase as the child grows older. In infants up to 6 months of age, closed methods with a harness usually succeed. Beyond 6 months, the soft tissues shorten and prevent easy reduction. These patients almost always require pre-reduction traction. An adductor tenotomy also facilitates reduction and apparently lessens compressive forces on the femoral head, an important consideration in preventing avascular necrosis of the head. Children over 1 year old develop bony changes, such as excessive femoral valgus and anteversion and deformity of the acetabulum. Treatment in these patients requires realignment of bony deformities with femoral or pelvic osteotomies in addition to the measures noted previously. The gentleness and high success rate of early treatment make early diagnosis of CDH an important consideration in infants and newborns.