The stability of the cervical spine has been defined as maintenance of normal vertebral alignment under physiologic loads. The ligaments of the cervical spine appear to be responsible for stability under test conditions which usually involve stressing two spinal segments in various directions. These studies for the most part have been carried out on specimens which have been stripped of overlying muscles and subjected to unidirectional forces. Previous work has yielded useful data regarding stability but the testing of two or three isolated vertebrae and their ligaments may place undue emphasis on the passive ligamentous supporting structures. These passive elements do not actively position or support the cervical spine under conditions of normal use.
KeywordsCervical Spine Spinous Process Thoracic Vertebra Cervical Musculature Lower Cervical Spine
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