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[The Achilles tendon: echography at different frequencies. Comparative study]

P Bagnolesi1, A Cilotti, R Lencioni

  • 1Istituto di Radiologia, Università degli Studi, Pisa.

La Radiologia Medica
|June 1, 1993
PubMed
Summary

Higher frequency ultrasound probes improve Achilles tendon imaging, revealing peritenon inflammation and tendon abnormalities more accurately than lower frequencies. Lower frequencies may be better for deeper structures like ruptures.

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Area of Science:

  • Musculoskeletal imaging
  • Orthopedics
  • Sports medicine

Background:

  • Achilles tendon injuries are common, particularly in athletes.
  • Accurate diagnosis is crucial for effective treatment.
  • Ultrasound (US) is a valuable tool for evaluating Achilles tendon pathology.

Purpose of the Study:

  • To compare the efficacy of different ultrasound (US) probe frequencies (7.5, 10, 13, and 15 MHz) in diagnosing various Achilles tendon conditions.
  • To determine the optimal US frequency for visualizing specific Achilles tendon pathologies.

Main Methods:

  • A comparative US study was conducted on 49 patients with Achilles tendon complaints.
  • Patients were categorized into groups based on symptoms: middle third achillodynia, distal achillodynia, and suspected ruptures.

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  • Different frequency probes were used to assess tendon and surrounding structures.

    • Main Results:

    • Higher frequencies (10-15 MHz) demonstrated superior accuracy in identifying peritenon inflammation and tendon abnormalities compared to 7.5 MHz.
    • For distal achillodynia involving the retrocalcaneal bursa, frequencies yielded similar results, with higher frequencies offering more detail.
    • Lower frequencies (7.5 MHz) were found to be more effective for visualizing deeper structures, such as suspected ruptures.

    Conclusions:

    • Higher frequency US probes are essential for detailed visualization of Achilles tendon anatomy, including the peritenon and intratendinous structures.
    • The choice of US frequency should be tailored to the specific suspected Achilles tendon pathology for optimal diagnostic yield.