- Determination of Anteversion: (see
determination of acetabular anteversion)
- probably the least accurate method is to gage anteversion off of the lesser trochanter or the thickness of the calcar;
- the most accurate method is to fully internally rotate the hip and to hold the tibia straight upwards;
- horizontal then indicates zero anteversion, and component is placed in anteversion as it is rotated towards buttocks (using the posterior approach);
- as broach is driven into the femur, it may rotate slight into anteversion;
- references:
Computed Tomography Measurement of the Accuracy of Component Version in Total Hip Arthroplasty.
Computed tomographic evaluation of component position on dislocation after total hip arthroplasty.
The effect of anteversion on femoral component stability assessed by radiostereometric analysis
