Tram-track appearance of the posterior cruciate ligament (PCL): correlations with mucoid degeneration, ligamentous stability, and differentiation from PCL tears.
OBJECTIVE: The purpose of our study was to describe the MRI findings in the posterior cruciate ligament (PCL) analogous to mucoid degeneration in the anterior cruciate ligament (ACL); to correlate MRI findings in the PCL with ligamentous stability; to differentiate the PCL tram-track appearance from the appearance of PCL tears; and to emphasize the coexistence of PCL and ACL mucoid degeneration, cruciate ganglia, and meniscal cysts. CONCLUSION: The tram-track PCL appearance commonly coexists with ACL mucoid degeneration; ganglia; and, less frequently, meniscal cysts. Both PCL tears and MRI findings suggestive of PCL mucoid degeneration show ligament thickening and increased PCL signal intensity. Tram-track PCLs are usually asymptomatic and typically have no ligamentous instability.
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Related Subject Headings
- Retrospective Studies
- Posterior Cruciate Ligament
- Nuclear Medicine & Medical Imaging
- Middle Aged
- Male
- Magnetic Resonance Imaging
- Knee Injuries
- Humans
- Female
- Diagnosis, Differential
Citation
Published In
DOI
EISSN
Publication Date
Volume
Issue
Start / End Page
Location
Related Subject Headings
- Retrospective Studies
- Posterior Cruciate Ligament
- Nuclear Medicine & Medical Imaging
- Middle Aged
- Male
- Magnetic Resonance Imaging
- Knee Injuries
- Humans
- Female
- Diagnosis, Differential