US acromioclavicular joint sprain

Ultrasound (US) image of a sprained left (LT) and normal right (RT) acromioclavicular joint. Note the thickening and hypoechogenicity of the left superior acromioclavicular ligament and capsule (star) and the widening of the acromioclavicular joint relative to the right acromioclavicular joint.

A: acromion bone; C: clavicle bone; ACJ: acromioclavicular joint.
Left image: Left: lateral; Right: medial; Bottom of screen: deep; Top of screen: superficial.
Right image: Left: medial; Right: lateral; Bottom of screen: deep; Top of screen: superficial.

Graphic 99405 Version 2.0

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