RT Journal A1 Zaltz, Ira A1 Beaulé, Paul A1 Clohisy, John A1 Schoenecker, Perry A1 Sucato, Daniel A1 Podeszwa, David A1 Sierra, Rafael A1 Trousdale, Robert A1 Kim, Young-Jo A1 Millis, Michael B. T1 Incidence of Deep Vein Thrombosis and Pulmonary Embolus Following Periacetabular Osteotomy JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2011 FD May 4 VO 93 IS Supplement_2 SP 62 OP 65 DO 10.2106/JBJS.J.01769 UL http://dx.doi.org/10.2106/JBJS.J.01769 AB Background:  Venous thromboembolism, a known complication of orthopaedic procedures, is thought to be more prevalent following hip surgery. Venous thromboembolism risk assessment and appropriate prophylaxis according to the American College of Chest Physicians guidelines has become the standard of care. However, it is accepted that venous thromboembolism prophylaxis is associated with potential adverse sequelae including hematoma, wound drainage, and infection. Little is known regarding the incidence of venous thromboembolism following periacetabular osteotomy and the necessity for and method of routine prophylaxis.Methods:  A total of 1067 periacetabular osteotomies performed at six North American centers utilizing different methods of prophylaxis against venous thromboembolism were analyzed for type of prophylaxis and incidence of clinically symptomatic venous thromboembolism.Results:  There were four cases of pulmonary embolus and seven cases of deep vein thrombosis. There were no reported deaths. The crude incidence of clinically symptomatic venous thromboembolism was 9.4 per 1000 procedures.Conclusions:  The risk from chemoprophylaxis and the development of hematoma may be greater than the risk of clinically important venous thromboembolism in patients undergoing periacetabular osteotomy.Level of Evidence:  Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.