A type IV SLAP tear is a shoulder injury involving the superior labrum from anterior to posterior (hence, SLAP). In type IV, not only is the labrum torn, but the tear extends into the long head of the biceps tendon, which is partially or fully split along with the labrum. This makes it more complex and unstable than types I–III, and often more symptomatic. Anatomically, the glenoid labrum is a ring of fibrocartilage that deepens the socket of the glenoid to help stabilise the humeral head. The l