Multifidus Muscle Under the Skin, Lateral View

Description

Seen from the lateral aspect beneath the skin of an adult male, the illustration centers on the deep paraspinal musculature, with the multifidus positioned medial and posterior to the more superficial erector spinae. Short, oblique fascicles span adjacent vertebral segments from transverse processes toward spinous processes, forming a layered column along the cervical and upper thoracic vertebrae. Anterior to the cervical transverse processes, the scalenus medius is identifiable as a separate muscular mass coursing inferiorly toward the first rib, with the shoulder girdle contour suggesting the nearby clavicle and scapular region. Clinically, this side-on relationship matters because multifidus dysfunction is a consistent finding in mechanical neck and back pain, where segmental atrophy and fatty infiltration can persist even after symptoms improve. Needle placement for cervical medial branch blocks or radiofrequency ablation is often taught with reference to the lateral profile of the articular pillars and the adjacent deep paraspinal envelope, so a clear depiction of multifidus relative to vertebrae helps orient depth and trajectory. Small muscle, big consequence. In anatomy teaching, this artwork supports modules on the transversospinalis group, segmental stabilization, and cervical biomechanics in gross anatomy, physical therapy, and sports medicine curricula. It also suits spine surgery and interventional pain publications that need a clean lateral overview of deep paraspinal layers near the cervical and upper thoracic vertebrae. Anatomical accuracy verified by SciePro's Medical Advisory Board.