Prevertebral Fascia, Posterior View

Description

Posteriorly, the cervical and upper thoracic region is opened to emphasize the prevertebral fascia draped over the vertebral bodies and deep paraspinal compartment, lying anterior to the prevertebral muscles yet deep to the posterior cervical musculature. Superficially, the trapezius spans from the external occipital protuberance and nuchal ligament inferiorly to the upper thoracic spinous processes, with the deltoid forming the lateral shoulder contour. Deep to trapezius, the levator scapulae ascends from the superior angle of the scapula to the transverse processes of C1 to C4, and the rhomboid muscles course inferomedially from the medial scapular border toward the thoracic spinous processes. Prevertebral fascia matters because it defines the posterior boundary of the retropharyngeal space and contributes, via the alar fascia and its relationship to the prevertebral layer, to the potential pathways for spread of deep neck infection toward the superior mediastinum. Posterior orientation also helps clarify why surgical dissection that reflects trapezius and the periscapular muscles must respect deep fascial planes to avoid entering spaces that communicate anteriorly with the pharyngeal region. These are not academic planes. They guide drainage routes and complication risk. Use this artwork in head and neck anatomy teaching to contrast superficial posterior cervical muscles with the deeper fascial envelope, and in otolaryngology or oral and maxillofacial references discussing retropharyngeal abscess, danger space extension, and mediastinitis. It also supports operative atlases that describe posterior exposure and layered dissection in the neck and upper back while keeping the pharyngeal and prevertebral compartments conceptually linked. Anatomical accuracy verified by SciePro's Medical Advisory Board.