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Acromioclavicular Ligament
Connective Tissue

Acromioclavicular Ligament

Ligamentum acromioclaviculare

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Anatomical Relations

The acromioclavicular ligament joins the upper aspect of the acromion of the scapula to the acromial (or lateral) aspect of the clavicle. Inferiorly, the ligament is thin. It provides an attachment for the articular disc of the acromioclavicular joint.

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The acromioclavicular ligament is a dense fibrous band. Its fibers are intermingled with that of the aponeuroses of the trapezius and deltoid muscles.


The acromioclavicular ligament ensures stability of the acromioclavicular joint, maintaining close apposition of the acromion of the scapula with the clavicle. It also reinforces the fibrous capsule that surrounds the acromioclavicular joint.

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Joint Ligament

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Entheseal structures are widely located throughout the body and are represented by the interface between bone and several tissues including tendon, joint capsules and ligaments.

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