The W33x169 girders are cold bent with reverse curves to multiple radii.
Instead of using circles of multiple radii as spatial bases for scanning cylinders [10], a square grid approach [17] is employed here.
In contrast, we measured various BEs using GIS, based on network distances with multiple radii.
Using multiple radii for buffer zones was also considered to be an advantage of this study, though the main results were basically consistent between all radii.
Therefore, using multiple radii would be useful, at least until an appropriate radius is established, and further study is needed to explore a better definition for neighborhood in many localities.
New implant designs have incorporated a single radius instead of a multiple radius to the femoral component in order to improve the mechanical function after TKA.
As the single-radius design prosthesis showed a more stable flexion/extension axis compared to a multiple-radius design, with minimized paradoxical movement, the physiological lever arm could potentially be restored (Kessler et al. 2007).
In this study, after implantation of the multiple-radius prostheses type, higher quadriceps forces were necessary to generate the same amount of extension moment compared to the conditions after implantation of the single-radius prosthesis.
This system also provides a fixed bearing inlay and a 3° posterior tibial slope similar to the single-radius design, but the condyles of the femoral component show multiple sagital radii from 0° to 90° of knee flexion.
The single femoral radius design showed lower maximum extension forces than the multiple femoral radius design.
