Fig 1.
Used segmental AAOS defects of the proximal femur.
The femoral isthmus region has been colored.
Fig 2.
Schematic cross sections of all four stem designs in comparison.
Fig 3.
Measurement points of the implant (orange; #1-#4) and bone (blue; #5-#10) at different measuring levels.
Fig 4.
Rotational stability of a) Megasystem-C, b) MUTARS, c) GMRS and d) Segmental System in mdeg/Nm.
Fig 5.
Converted relative micromotions in extreme case of stumbling [14] of a) Megasystem-C, b) MUTARS, c) GMRS and d) Segmental System in μm compared to AAOS defect type II [8].
Table 1.
Relative micromotions of all implant groups (A-D) and measurement points (from proximal to distal) described as means (Ø) and standard deviations (SD).