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Irreducible Traumatic Radial Head Dislocation Due to Annular Ligament Interposition in a Child with Ulnar Plastic

Dung T Tran1, Nam T Vu1, Quynh T Nguyen2

  • 1Hanoi Medical University, Hanoi, Vietnam.

Orthopaedic Surgery
|May 4, 2021
PubMed

Insights

Traumatic radial head dislocation with ulnar plastic deformation in children can be irreducible with closed reduction. Open reduction is an effective treatment for this rare condition, leading to excellent outcomes.

Area of Science:

  • Pediatric Orthopedics
  • Pediatric Traumatology
  • Elbow Biomechanics

Background:

  • Traumatic radial head dislocation in children often requires closed reduction.
  • Irreducible dislocations can occur due to soft tissue interposition, such as the annular ligament.
  • Ulnar plastic deformation is a rare but significant complicating factor.

Observation:

  • A 3-year-old child presented with traumatic radial head dislocation and ulnar plastic deformation.
  • Initial closed reduction attempts failed due to annular ligament interposition, confirmed by MRI.
  • The case was successfully treated with open reduction without osteotomy or ligamentous reconstruction.

Findings:

  • Open reduction achieved excellent functional recovery at 6-month follow-up, with a high Mayo elbow-performance score.
  • The range of motion in the affected arm gradually improved over 3 months post-surgery.
  • Early detection and intervention are crucial for optimal outcomes.

Implications:

  • This case highlights the efficacy of open reduction for irreducible radial head dislocations with ulnar plastic deformation.
  • Timely surgical intervention can prevent long-term complications like limited forearm rotation and deformity.
  • Successful open reduction in this rare pediatric elbow injury can guide future treatment strategies.
Abstract

Keywords:
Annular ligamentDislocationElbowIrreducible radial head dislocation

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