A Posterior View Of The Infraspinous Fossa On The Scapula

Description

Framed from a posterior perspective, the scapular spine runs transversely and divides the dorsal surface into the smaller supraspinous fossa superiorly and the broad infraspinous fossa inferiorly. The animation tracks across the infraspinous fossa as a shallow concavity bounded medially by the vertebral (medial) border, laterally by the axillary (lateral) border, and inferiorly by the inferior angle. As the viewpoint subtly shifts, the acromion appears as the lateral continuation of the spine, and the lateral angle comes into relief where the fossa narrows toward the glenoid region. In teaching shoulder anatomy, this surface matters because it is the primary origin for the infraspinatus muscle, and its lateral convergence points toward the greater tubercle of the humerus where infraspinatus inserts as part of the rotator cuff. A common clinical correlation is posterior superior rotator cuff pathology, where tendon degeneration at the footprint and subacromial impingement symptoms are better understood when learners can orient the scapular spine, acromion, and fossa as a continuous posterior arch over the joint. Motion clarifies orientation. Watching the camera move along borders and landmarks helps prevent the frequent left-right and superior-inferior confusion that persists with single-frame posterior views. Use this animation in gross anatomy labs to cue scapular landmark identification, in kinesiology modules on glenohumeral mechanics to anchor rotator cuff origins, or in orthopedic and sports medicine materials explaining posterior shoulder pain patterns and surgical approaches that reference the scapular spine as a palpable guide. Anatomical accuracy verified by SciePro's Medical Advisory Board.