La. Whiteside et al., FIXATION OF THE MODULAR TOTAL HIP FEMORAL COMPONENT IN CEMENTLESS TOTAL HIP-ARTHROPLASTY, Clinical orthopaedics and related research, (298), 1994, pp. 184-190
Cementless femoral component fixation with a modular design that achie
ved tight fit in the proximal and distal femur was evaluated. The base
of the femoral neck made the most important contribution, but diaphys
eal bony interlock also contributed significantly to immediate torsion
al fixation. Fluted surface and slotted distal design produced fixatio
n that was superior to fully porous-coated and cemented cylindrical st
ems. Early cyclical loading improved fixation, and under moderate tors
ional loads (up to 20 N-m), no measurable interface slippage occurred
with the modular implant.