Image-Guided Surgery - Overview. 1  Image-guided surgery (IGS) is the use of a real-time correlation of the operative field to a preoperative imaging data set that reflects the precise location of a selected surgical instrument to the surrounding anatomic structures. Although first developed for neurosurgery, endoscopic sinus surgery (ESS) rapidly became one of the leading indi...
Like most other muscles, there are two trapezius muscles â a left and a right trapezius â that are symmetrical and meet at the vertebral column. The trapezius arises from ligaments at its origins along the nuchal crest of the occipital bone and the spinous processes of the cervical and thoracic vertebrae....
an important part of your posture. Your trapezius muscle is an important part of your posture. It holds your head back and tips its side to side. It also moves yours shoulder blades together and pulls your shoulders back.