![]() Templating is an essential part of preoperative planning that is more important and sophisticated for revision than for primary arthroplasty. Revision THA is a complex procedure with a higher risk of complications and unforeseen circumstances. Templating is indicated for every revision hip arthroplasty, whether it is a straightforward or a complicated case. The availability of specific curved, angulated, or offset instruments is mandatory. As this approach allows for extensions proximally and distally along the femur, it competes with lateral approaches to the hip joint and femur and does not have additional specific contraindications. If these cannot be achieved, an alternative operative strategy or a different approach should be considered. ![]() ![]() For endofemoral revision other than detachment of the TFL, hyperextension and sufficient adduction of the operated leg are important. If preservation of the gluteal muscles is desired, the DAA and its extension are the approaches of choice. ![]() Gluteal muscles can be preserved whether the approach can be limited to the original interval between the TFL and the rectus or it must be extended. For revision THA the DAA allows for keeping the incision small if only the cup has to be revised or in cases of stem revision the femoral preparation can be performed strictly endofemorally from the proximal direction. Indications for revision hip arthroplasty are septic or aseptic loosening of one or both components of a hip arthroplasty. Michael Nogler, in Surgical Treatment of Hip Arthritis, 2009 INDICATIONS AND CONTRAINDICATIONS ![]()
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