Kamala Devi Hospital

Open Reduction for DDH

Open Reduction for Developmental Dysplasia of the Hip (DDH)

Introduction

Developmental Dysplasia of the Hip (DDH) is a condition where the hip joint does not develop properly in infants and young children. It ranges from mild instability to complete dislocation of the femoral head from the acetabulum. Early diagnosis and treatment are crucial to ensure normal hip development and to prevent long-term complications such as pain, limping, and early osteoarthritis.

When non-surgical methods such as bracing or closed reduction fail or are not feasible, surgical intervention becomes necessary. Open reduction is a key surgical procedure used to treat DDH, especially in older infants and children where the hip joint cannot be reduced by closed methods.

What is Open Reduction?

Open reduction is a surgical technique that involves making an incision to directly visualize and manipulate the hip joint to relocate the femoral head into the acetabulum. Unlike closed reduction, which is performed without an incision using traction and manipulation under anesthesia, open reduction allows the surgeon to remove obstacles preventing proper hip alignment and to repair soft tissues.

Indications for Open Reduction in DDH

Open reduction is typically indicated in the following scenarios:

  • Failed closed reduction: When attempts to reduce the hip non-surgically are unsuccessful.
  • Late diagnosis: Children diagnosed after 6 months of age often require open reduction.
  • Irreducible dislocation: When soft tissue interposition, such as the ligamentum teres, pulvinar, or hypertrophied capsule, blocks reduction.
  • Associated anatomical abnormalities: Such as acetabular dysplasia or femoral head deformities.
  • Bilateral dislocations: Where closed methods are less effective.

Preoperative Evaluation

Before surgery, a thorough clinical and radiological assessment is essential. This includes:

  • Physical examination: Assessing hip range of motion, limb length discrepancy, and gait.
  • Imaging: X-rays to evaluate the position of the femoral head and acetabular development; ultrasound may be used in younger infants.
  • Planning: Determining the surgical approach and whether additional procedures like pelvic or femoral osteotomy are needed.

Surgical Procedure

Anesthesia and Positioning

Open reduction is performed under general anesthesia. The child is positioned supine or lateral depending on the surgical approach.

Surgical Approaches

Several approaches exist, with the most common being:

  • Anterior (Smith-Petersen) approach: Provides good exposure of the hip joint and allows access to the acetabulum.
  • Medial (Ludloff) approach: Used mainly in younger infants; less invasive but limited exposure.
  • Anterolateral approach: Sometimes used depending on surgeon preference.

Steps of Open Reduction

  1. Incision and exposure: The surgeon makes an incision to expose the hip joint.
  2. Removal of obstacles: Soft tissues such as the ligamentum teres, hypertrophied capsule, and pulvinar are excised or released.
  3. Reduction of the femoral head: The femoral head is gently relocated into the acetabulum.
  4. Assessment of stability: The hip is tested through a range of motion to ensure stable reduction.
  5. Additional procedures: If necessary, pelvic or femoral osteotomies are performed to improve joint congruency and stability.
  6. Closure: The wound is closed in layers, and a spica cast is applied to maintain hip position.

Postoperative Care

After surgery, the child is immobilized in a spica cast for 6 to 12 weeks to maintain reduction and allow healing. Pain management, monitoring for complications, and regular follow-up with imaging are essential.

Physical therapy is introduced gradually after cast removal to restore hip motion and strength.

Outcomes and Prognosis

Open reduction for DDH has a high success rate in achieving stable, concentric reduction of the hip joint. Early intervention generally leads to better outcomes. However, the prognosis depends on factors such as:

  • Age at surgery
  • Severity of dysplasia
  • Presence of associated deformities
  • Adequacy of reduction and stability

Potential complications include avascular necrosis of the femoral head, redislocation, stiffness, and residual dysplasia.

Advantages of Open Reduction

  • Direct visualization allows precise removal of obstacles.
  • Ability to perform concomitant procedures to improve hip stability.
  • Effective in older children and complex cases where closed reduction fails.

Risks and Complications

As with any surgery, open reduction carries risks:

  • Avascular necrosis (AVN): Damage to blood supply of the femoral head.
  • Infection: Surgical site infection requiring treatment.
  • Nerve injury: Rare but possible.
  • Redislocation: If reduction is not stable.
  • Stiffness and limited range of motion.

Conclusion

Open reduction is a vital surgical option for treating Developmental Dysplasia of the Hip, especially in cases where non-surgical methods are inadequate. With careful patient selection, meticulous surgical technique, and appropriate postoperative care, open reduction can restore hip anatomy and function, preventing long-term disability.

Early diagnosis and timely intervention remain the cornerstone of successful DDH management. Parents and caregivers should seek prompt medical evaluation if hip instability is suspected in infants to optimize outcomes.

Explore More:

Welcome to KamalaDevi Hospital

Aenean porta orci nam commodo felis hac ridiculus fusce fames maximus erat sed dictumst blandit arcu suspendisse sollicitudin luctus in nec

Make an Appointment.