A variety of surgical techniques have been employed for shoulder problems, i.e., arthroplasty, arthroscopy, and fracture fixation, etc. A thorough understanding and knowledge of the normal anatomy, physiology, biomechanics, and pathomechanics of the glenohumeral joint can help facilitate a successful pre-operative evaluation of the shoulder. The authors reviewed practical measurement methods of a shoulder computed tomography (CT) with three-dimensional volume-rendered images, from the orthopedic surgeon’s viewpoint, to aid radiologists make structured reports. It is important that the radiologist be familiar with the normal and abnormal imaging appearances of the shoulder CT before and after the surgical procedures.
