Clavicular joint
The clavicular joint or acromioclavicular joint was a joint at the top of the shoulder, the junction between the acromion and the clavicle.

In 2375, after Doctor Julian Bashir had repaired Miles O'Brien's torn rotator cuff, his ligaments required time to  together with the clavicular joint. This meant O'Brien could not play in the Niners' baseball game against the Logicians. ()

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Anatomy