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04.04.2022 | Test Yourself: Answer
Elbow pain and clicking
Erschienen in: Skeletal Radiology | Ausgabe 11/2022
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The small tendon at the medial aspect of the brachialis muscle dislocates over the trochlear margin with elbow supination (Fig. 1) and returns to its normal position at the outer aspect of the trochlea with elbow pronation (Fig. 2). This is demonstrated on the dynamic ultrasound assessment (Supplementary video).
Fig. 1
Ultrasound image in transverse axis via anterior approach, with elbow in supination. The medial edge of the brachialis muscle (arrow) lies lateral to the medial border of the trochlea
Fig. 2
Ultrasound image in transverse axis via anterior approach, with elbow in pronation. The medial edge of the brachialis muscle (arrow) has returned to its normal position medial to the trochlear edge
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