Fig 1.
Finite element (FE) model of the hip resurfacing arthroplasty (HRA).
Table 1.
Material properties of the FE model.
Table 2.
Loading conditions§.
Fig 2.
Impingement area at the anteroinferior femoral neck in relation to different femoral versions and degrees of hip flexion.
(A) Schematic design showing the change in the impingement area with progressive femoral retroversion (this example accounts for an acetabular cup in 40° of inclination and 15° of version). (B) Impact of different acetabular cup positions on impingement area: 40° of inclination and 15° of version (black line); 40° of inclination and 25° of version (red line); 50° of inclination and 15° of version (green line); 50° of inclination and 25° of version (blue line).
Fig 3.
Contact pressure between the acetabular cup and head in different loading conditions and acetabular cup positions.
Acetabular cup is position with 40° of inclination and 15° of version (green line); 40° of inclination and 25° of version (black line); 50° of inclination and 15° of version (red line); 50° of inclination and 25° of version (blue line).
Fig 4.
Illustration of the contact area across the acetabulum and head in different loading conditions.
Contact area across the HRA when the joint is loaded in 0°, 45°, and 90° of hip flexion is influenced by femoral version (this example accounts for an acetabular cup in 40° of inclination and 15° of version).
Fig 5.
Contact area between the acetabular cup and head in different loading conditions and acetabular cup positions.
Acetabular cup is position with 40° of inclination and 15° of version (green line); 40° of inclination and 25° of version (black line); 50° of inclination and 15° of version (red line); 50° of inclination and 25° of version (blue line).