Other than acting as a pivot, the acromio-clavicular joint stabilizes three ligaments known as the acromioclavicular, coracoacromial, and coracoclavicular ligaments. The acromioclavicular ligament connects the clavicle with the acromion of the scapula. By restraining the posterior translation and movements of the clavicle, the acromioclavicular provides stability across the joint (NISMAT 2007). Extending from the coracoids process to the acromion, the coracoacromial ligament controls both the anterior and posterior part of the lateral clavicle whereas the coracoclavicular ligament which is consists of the conoid and trapezoid ligaments connect the clavicle with the coracoids process of the scapula (NISMAT 2007).