Stress fractures are more common in the lower extremities. The cause of this pathology is a submaximal exercise on the bone or a decrease bone density. Stress fractures of the clavicle are a very rare pathology, described in a variety of clinical situations, such as fracture after reverse shoulder replacement, radical neck dissection, rowing, diving, gymnastics and baseball athletes. This article describes a clinical case of a stress-fracture of the left clavicle in a 34-year-old powerlifting patient.