Infraspinous Fascia of a Male Examined Laterally

Description

Shown from a lateral perspective, the scapula sits posterior to the thoracic wall with the infraspinous fascia forming a taut aponeurotic sheet spanning the infraspinous fossa inferior to the scapular spine. Laterally, the membrane blends toward the posterior aspect of the glenohumeral region near the greater tubercle of the humerus, deep to the deltoid and adjacent to the posterior axillary fold formed by latissimus dorsi and teres major. Superiorly and medially, portions of trapezius contour the scapular spine, while pectoralis major remains anterior on the chest wall. A clean, planar landmark. Treating the infraspinous fascia as more than a thin covering helps when teaching layered shoulder anatomy: it defines the posterior scapular compartment and frames the relationship of infraspinatus to deltoid, teres minor, and the posterior capsule. Clinically, that matters during posterior shoulder approaches and arthroscopic portal placement, where respecting the fascial planes can reduce deltoid trauma and keep dissection oriented relative to the infraspinatus tendon footprint and the course of the suprascapular nerve at the scapular notch and spinoglenoid region. It also supports discussion of myofascial pain patterns and posterior shoulder stiffness, where fascial restriction can mimic rotator cuff pathology. Use this artwork in gross anatomy and kinesiology modules on the shoulder girdle, in surgical teaching files covering posterior deltoid-splitting exposure or posterior portals, and in medical publishing figures that need an explicit aponeurosis or membrane layer rather than only muscle bellies. It also fits rehabilitation education on scapulothoracic mechanics and rotator cuff layering in the adult male upper torso. Anatomical accuracy verified by SciePro's Medical Advisory Board.