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[Ulnar dimelia: imaging modalities and surgical implications].

P Schmit1, S Guéro, F Brunelle

  • 1Service de Radiopédiatrie, Hôpital des Enfants Malades, 75015 Paris, France.

Journal De Radiologie
|March 31, 2000
PubMed
Summary
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Hand surgery & rehabilitation·2019

Ulnar dimelia, a rare congenital upper limb disorder, presents unique challenges. Multimodality imaging is crucial for surgical planning to reconstruct affected limbs.

Area of Science:

  • Orthopedics
  • Radiology
  • Congenital Malformations

Background:

  • Ulnar dimelia, also known as mirror hand, is a rare congenital upper limb malformation.
  • This condition involves duplication of the ulna and absence of the radius, often accompanied by other skeletal and vascular anomalies.

Observation:

  • This report details two patients diagnosed with ulnar dimelia.
  • Imaging modalities included plain radiographs, angiography, MRI, and CT with 3D reconstruction.
  • Key observations included unilateral polydactyly with thumb absence, ulnar duplication, radius absence, and shoulder dislocation in one patient.

Findings:

  • CT with 3D reconstruction effectively delineated bone abnormalities for surgical planning, particularly for elbow osteotomies.
  • MRI provided valuable insights into muscle anatomy.

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  • Vascular anomalies were noted but did not impede surgical treatment or pollicization.

    • Implications:

    • A comprehensive, multimodality imaging approach is essential for accurately assessing the complex malformations associated with ulnar dimelia.
    • This detailed imaging facilitates surgical planning, aiming to achieve functional and aesthetic outcomes for the upper limb.
    • Understanding the spectrum of ulnar dimelia, including associated conditions like shoulder dislocation, is vital for effective patient management.