A shoulder model and methods of shoulder arthroscopy using the shoulder model. The shoulder model includes an acromioclavicular (AC) joint assembly, a joint capsule assembly, a scapula mount, a shoulder musculature, a skin, and a base. The AC joint assembly is mounted on the scapula mount and the joint assembly is attached to the AC joint assembly and fastened using a screw/nut to form the shoulder assembly. The shoulder assembly is placed in the shoulder musculature and the skin is rolled over the shoulder musculature and zipped in place. The bones of the shoulder assembly are made of foam-cortical shell, the shoulder musculature is made of foam, the soft tissue components are made of thermoplastic elastomers, and the skin is made of vinyl. A method of practicing shoulder arthroscopy using the shoulder model includes mounting the shoulder model in a beach chair position, making anatomical references, establishing a posterior viewing portal, inserting cannulas into the glenohumeral joint or the subacromial space, creating a labral disruption or a rotator cuff tear, and repairing the rotator cuff tear or labral disruption.