Extended Retinacular Flap

The extended retinacular flap is a subsequent development of the surgical hip dislocation approach. It is based on a technique of Dunn, proposed 60 years ago, for open reduction of severe slips. The extension, as described in this chapter, further reduces the risk of avascular necrosis of the femoral head and is the condition for several new intraarticular procedures. The chapter describes indications, surgical steps, and technical risks in detail.