ORTHOPEDICS | Healio.com/Orthopedics n Case Report abstract Full article available online at Healio.com/Orthopedics. Search: 20120919-27 Posterior sternoclavicular dislocation is an uncommon injury and often remains initially undiagnosed due to variable clinical presentation and inadequate visualization of the joint on plain radiographs. It is frequently associated with serious and life-threatening injuries involving the trachea, esophagus, or great vessels. A 15-year-old boy was knocked to the ground during wrestling and landed on his left shoulder. He presented 6 days after trauma with increasing arm swelling and pain. A Doppler ultrasound revealed deep vein thrombosis involving the left shoulder and arm. Contrast-enhanced computed tomography of the chest confirmed the diagnosis of left posterior sternoclavicular dislocation with the medial end of left clavicle compress- ing the underlying brachiocephalic vein. Venous duplex scan confirmed acute venous thrombosis of the left jugular and subclavian veins. Open reduction of the left posterior sternoclavicular dislocation was performed under general anesthesia with cardiothorac- ic surgery backup. The reduced joint was stable, negating the need for internal fixation. Postoperatively, the pain and arm swelling gradually subsided, and patient recovered well with no complications. Deep vein thrombosis has not been reported as a presenting symptom for posterior ster- noclavicular dislocation. Orthopedic, trauma, and thoracic surgeons should be aware of this presentation and obtain a chest computed tomography scan with 3-dimensional reconstruction to confirm the diagnosis. In cases of posterior sternoclavicular dislocation with vascular compromise, patients should immediately undergo open reduction with or without internal fixation. Drs Chotai and Ebraheim are from the Department of Orthopedic Surgery, University of Toledo Medical Center, Toledo, Ohio. Drs Chotai and Ebraheim have no relevant financial relationships to disclose. Correspondence should be addressed to: Nabil A. Ebraheim, MD, Department of Orthopedic Surgery, University of Toledo Medical Center, 3065 Arlington Ave, Toledo, OH 43614 (nabil.ebraheim@ utoledo.edu). doi: 10.3928/01477447-20120919-27 Posterior Sternoclavicular Dislocation Presenting With Upper-extremity Deep Vein Thrombosis PRANIT N. CHOTAI, MD; NABIL A. EBRAHEIM, MD Figure 1: Axial chest computed tomography scan showing posterior sternoclavicular dislocation on the left, with the medial end of the clavicle com- pressing the brachiocephalic vein. 1 Figure 2: Three-dimensional reconstruction of the axial chest computed tomography scan demon- strating posterior sternoclavicular dislocation on the left. 2 e1542