The infraspinous fossa is a concave area located on the posterior surface of the scapula, or shoulder blade. It is situated below the spine of the scapula and serves as an attachment site for the infraspinatus muscle, which plays a crucial role in shoulder movement and stability. This fossa is important for the overall function of the shoulder joint, allowing for a range of motions such as rotation and lifting. Understanding the anatomy of the infraspinous fossa is essential for medical professionals, particularly in fields like orthopedics and physical therapy, where shoulder injuries are common.