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[Shoulder imaging: what is the best modality?].

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Journal De Radiologie

|April 5, 2001

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Choosing the right shoulder imaging technique is key for diagnosing instabilities and tendinopathies. Plain films, ultrasound (US), arthro-CT, and arthro-MRI offer distinct advantages for evaluating shoulder pathologies.

Area of Science:

Orthopedics
Radiology
Sports Medicine

Background:

Shoulder pathologies like instability in young patients and tendinopathy in older patients require precise diagnosis.
The selection of imaging modality is crucial and depends on the specific clinical information needed.

Purpose of the Study:

To outline the appropriate use of various imaging techniques for shoulder pathologies.
To detail the strengths and limitations of each imaging modality in diagnosing shoulder conditions.

Main Methods:

Review of imaging modalities including plain films, ultrasound (US), arthro-CT, and arthro-MRI.
Correlation of imaging findings with specific shoulder pathologies like instability and rotator cuff tendinopathy.
Evaluation of diagnostic accuracy and limitations of each technique.

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Main Results:

Plain films are effective for detecting bone abnormalities (Hill Sachs, Bankart lesions) and indirect signs of impingement/tendinopathy.
Ultrasound (US) provides dynamic, non-invasive rotator cuff tear evaluation but is operator-dependent.
Arthro-CT and arthro-MRI offer detailed visualization of intra-articular structures, labrum, and rotator cuff tendons, with arthro-CT excelling in partial/anterior tears and MRI in overall visualization, despite cost and accessibility limitations.

Conclusions:

The choice of imaging modality should be tailored to the suspected shoulder pathology.
Each technique (plain films, US, arthro-CT, arthro-MRI) provides complementary information for accurate shoulder diagnosis.
While advanced imaging like arthro-CT and MRI offer detailed insights, their use should be judicious considering clinical context and resource availability.