Intra-articular migration of femoral interference screw: Open or arthroscopic removal.

Migration of the femoral interference screw in to the knee joint following anterior cruciate reconstruction is a rare complication. A migrated interference screw usually requires removal as it often results in mechanical symptoms. Formal arthrotomy may be required to remove a dislodged screw lying in the femoral notch because arthroscopic removal can be difficult or not possible in the presence of an intact integrated anterior cruciate ligament graft or scarring in the notch. When attempting arthroscopic removal in a similar situation, one should foresee the possibility of a formal arthrotomy and this should be discussed with the patient and consent obtained preoperatively.