A method and apparatus for performing a minimally invasive total hip
arthroplasty. An approximately 3.75-5 centimeter (1.5-2 inch) anterior
incision is made and the femoral neck is severed from the femoral shaft
and removed through the anterior incision. The acetabulum is prepared for
receiving an acetabular cup through the anterior incision, and the
acetabular cup is placed into the acetabulum through the anterior
incision. In one exemplary embodiment, a posterior incision of
approximately 2-3 centimeters (0.8-1.2 inches) is generally aligned with
the axis of the femoral shaft and provides access to the femoral shaft.
In this embodiment, Preparation of the femoral shaft including the
reaming and rasping thereof is performed through the posterior incision,
and the femoral stem is inserted through the posterior incision for
implantation in the femur. In an alternative embodiment, preparation of
the femur is effected through the anterior incision, with the operative
hip placed in hyperextension.