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Related Experiment Videos

[Acromioclavicular joint : The "forgotten" joint].

C Krestan1, B Pretterklieber2, M Pretterklieber2

  • 1Universitätsklinik für Radiologie und Nuklearmedizin, Abteilung für Allgemeine und Kinderradiologie, Medizinische Universität Wien, Waehringer Gürtel 18-20, 1090, Wien, Österreich. christian.krestan@meduniwien.ac.at.

Der Radiologe
|February 16, 2019
PubMed
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Imaging plays a crucial role in diagnosing acromioclavicular (AC) joint injuries. While X-rays are useful for screening, MRI offers superior detail for classifying dislocations and assessing post-traumatic changes.

Area of Science:

  • Orthopedics and Sports Medicine
  • Radiology and Medical Imaging

Background:

  • Acromioclavicular (AC) joint alterations are commonly caused by osteoarthritis, trauma, and post-traumatic conditions.
  • The Rockwood classification system is standard for categorizing post-traumatic AC joint lesions.

Purpose of the Study:

  • To review the diagnostic imaging modalities for acromioclavicular (AC) joint injuries.
  • To compare the effectiveness of different imaging techniques in evaluating AC joint pathology.

Main Methods:

  • Review of current literature on AC joint imaging.
  • Discussion of the roles of X-ray, Magnetic Resonance Imaging (MRI), Sonography, and Multidetector Computed Tomography (MDCT).
  • Emphasis on anteroposterior X-ray with weight-bearing for screening and MRI for detailed dislocation assessment.
Keywords:
Computed tomographyMagnetic resonance imagingRockwoodShoulderX-rays

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Main Results:

  • Anteroposterior X-ray with weight-bearing and contralateral comparison is the primary screening tool for AC joint injuries.
  • Magnetic Resonance Imaging (MRI) without weight-bearing is superior for detailed analysis and classification of AC joint dislocations.
  • X-rays and MRI are standard for postoperative assessment; sonography has limited utility, and MDCT is typically used for concurrent shoulder imaging.

Conclusions:

  • Appropriate selection of imaging modalities is essential for accurate diagnosis and management of AC joint pathologies.
  • MRI provides superior diagnostic information for AC joint dislocations compared to conventional X-rays.