We present a case a 48-year-old man who was diagnosed with an upper limb deep vein thrombosis post clavicle fracture. He was successfully investigated with a computed tomography (CT) venogram, thrombophilia was excluded, and he was subsequently treated with a 3-month course of anticoagulation. We illustrate this case with photographs and a three-dimensional colour reconstruction of a CT venogram to raise awareness of the condition. A suitable level of clinical suspicion should be maintained by the orthopaedic surgeon; delayed arm swelling with venous congestion following a clavicle fracture should be investigated with CT venography and thrombophilia should be excluded.