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Laboratory 10. Joints of the Upper Extremity
Step 2. Acromioclavicular joint

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The acromioclavicular joint connects the clavicle with the scapula (Figure 10.2). It consists of:
  • a synovial joint between the acromial end of the clavicle and the acromial process of the scapula
  • ligaments that attach the inferior surface of the acromial end of the clavicle with the coracoid process

Identify the acromial process of the scapula, coracoid process of the scapula, and acromioclavicular ligaments [located lateral to retractor] which surround the acromial end of the clavicle and connect it to the acromion.

Between the acromial end of the clavicle and the coracoid process, identify the coracoclavicular ligament. It has two components, the trapezoid ligament and the conoid ligament. Finally, identify the coracoacromial ligament [above probe], which is superior to the head of the humerus.

Links and References:
Grant's: 6.46
Netter (1ed.): 398 (2ed.): 394
Rohen/Yokochi: 356