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Isolated Tear Of Posterolateral Bundle Of Anterior Cruciate Ligament

Naveed Mazhar1, Uzma Saeed1

  • 1Department of Radiology, Dallah Hospital, Riyadh, Saudi Arabia.

Journal of Ayub Medical College, Abbottabad : JAMC
|November 23, 2018
PubMed

Insights

Diagnosing isolated posterolateral bundle tears of the anterior cruciate ligament (ACL) can be challenging with MRI. Specific "Gap" and "Footprint" signs on knee MRI are highly indicative of these difficult-to-detect injuries.

Area of Science:

  • Orthopedic imaging
  • Musculoskeletal radiology
  • Sports medicine imaging

Background:

  • Anterior cruciate ligament (ACL) injuries are common findings in MRI reports.
  • Standard MRI assessment identifies most ACL tears.
  • Isolated tears of specific ACL bundles, particularly the posterolateral bundle, are frequently overlooked.

Observation:

  • A case study involving a young male patient with an isolated posterolateral ACL bundle tear is presented.
  • The patient presented with specific MRI findings.
  • The "Gap" and "Footprint" signs were observed on the knee joint MRI.

Findings:

  • The "Gap" and "Footprint" signs on MRI are highly specific indicators of an isolated posterolateral ACL bundle tear.
  • These signs aid in the diagnosis of injuries that are difficult to detect with conventional MRI evaluation.
  • The case highlights the utility of these specific signs in identifying subtle ACL pathology.

Implications:

  • Improved diagnostic accuracy for posterolateral ACL bundle tears using MRI.
  • Enhanced identification of subtle knee joint injuries.
  • Potential to guide more precise treatment strategies for ACL injuries.
Keywords:
ACL partial tear.Anterior cruciate ligamentFoot print signGap signPosterolateral bundle

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