The supraglenoid tuberosity [Figure 1] is located at the distal end of the scapula, cranial and just proximal to the glenoid cavity. This bony outcrop is the attachment site for the biceps brachii (Farrow, 2006) and coracobrachialis muscles (Ahern et al., 2017). Fracture of the supraglenoid tuberosity [Figure 2] is an injury that results from a fall or collision with a solid object (Ross and Dyson, 2003), also, forces produced by the biceps brachii muscle may result in avulsion fractures (Ahern et al., 2017). The supraglenoid tubercle is a centre of ossification, the physis closes between 12-24 months of age, and is a common place for fracture to occur through. The fracture may be simple and only involve the tubercle, without an articular element, or it may pass through the suprascapular notch resulting in one large fracture or separation of physes (Ross and Dyson, 2003), larger fractures can affect the articular surface of the glenoid cavity (Mair et al., 2013). Supraglenoid tuberosity fractures are uncommon and usually occur in horses under two years old, if this injury occurs in a horse under one year of age it will likely involve the physis (Ahern et al., 2017). Injury may result in damage to the suprascapular nerve (Ross and Dyson, 2003), which innervates both the supraspinatus and infraspinatus muscles (Rooney, 1998).