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Related Experiment Videos

MR imaging in chronic Achilles tendon disorder

T Movin1, M Kristoffersen-Wiberg, C Rolf

  • 1Department of Orthopedic Surgery, Karolinska Institute, Huddinge University Hospital, Sweden.

Acta Radiologica (Stockholm, Sweden : 1987)
|April 8, 1998
PubMed
Summary

Gadolinium-enhanced T1-weighted MRI best visualizes Achilles tendon abnormalities in achillodynia. This imaging technique accurately detects intratendinous signal changes, correlating with histopathology and improving diagnostic capabilities for this condition.

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Area of Science:

  • Radiology
  • Orthopedics
  • Musculoskeletal Imaging

Background:

  • Achillodynia, or Achilles tendinopathy, is a common cause of heel pain.
  • Accurate imaging is crucial for diagnosing and managing Achilles tendon disorders.
  • Several MRI sequences exist, but their efficacy in detecting intratendinous abnormalities varies.

Purpose of the Study:

  • To compare four MRI sequences for visualizing intratendinous signal abnormality in patients with achillodynia.
  • To correlate imaging findings with clinical symptoms and histopathological results.
  • To determine the optimal MRI sequence for diagnosing Achilles tendon pathology.

Main Methods:

  • Twenty patients with chronic achillodynia underwent MRI on a 1.5 T unit.
  • Four sequences were evaluated: T1-weighted, T2-weighted, proton density, and T1-weighted with gadolinium contrast.

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  • Symptomatic and control tendons were assessed, and histopathological analysis was performed on symptomatic tissue.

    • Main Results:

    • T1-weighted MRI with gadolinium contrast enhancement was superior in visualizing intratendinous signal abnormality.
    • This sequence detected abnormality in 24/25 symptomatic tendons versus 1/11 control tendons (p < 0.001).
    • Histopathology revealed increased extracellular matrix and altered fiber structure in contrast-enhanced areas.

    Conclusions:

    • Gadolinium enhancement significantly improves the detection of intratendinous signal abnormalities on T1-weighted MRI for achillodynia.
    • The findings suggest a role for extracellular glycosaminoglycans in enhancing signal intensity.
    • This enhanced imaging technique aids in the diagnosis of Achilles tendon pathology.